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分类:前端科技

静态财富文件自动削减并替换来压缩版本(大型网址优化技术)

2015/11/26 · HTML5 · 静态财富

原稿出处: Kelly   

那一次,小编总计和享受一项大型网址优化本领,那正是在类型中自动削减静态财富文件(css、js),并让网址自行加载压缩后的财富文件。当然,那项技巧在雅虎35条前端优化提出里也许有记载,但它这只是给出一个反驳的方案而已,何况利用的是表面压缩工具去收缩,而在自己的系列中,是直接通过投机的前后相继自动化去减弱全体css、js文件,然后让页面一向加载所收缩后的财富,接下去直接进去正题。

此番试验应用的是PHP脚本语言,版本是PHP5.6,是在LINUX下搭建的条件(网络搭建无论是搭建LAMP依然LNMP的课程都五颜六色一塌糊涂,后一次笔者会计算和分享如何在LINUX下搭建服务器意况的博文,何况搭建的景况必得二回性搭建成功的)。所采取的框架是CI框架,所利用的模版是Smarty模板引擎。当然了,那个只是本人所运用的条件而已,假使您是PHP开采者,即便你要测量检验下本次试验,那么,小编建议您的PHP版本采用5.4以上,至于框架用哪些都以能够的。而一旦您不是PHP开采者(你是JSP大概是ASP开采者或许是其他开辟者),那么你通晓好这一思路后,完全能够在协和熟习的语言里张开尝试测量试验。

一、原理图

首先自个儿画一张思路图,便于我们先知道。

先是是能源缩小原理图:

图片 1

随后是能源文件替换的原理图:

图片 2

一经我们认真领悟而且看懂这两张原理图的话,基本上也就掌握了自己所享用的思绪。如若依旧不可能通晓的话,接下去作者会结合代码,对上述原理图的每一步举行详细批注。

二、思路详细深入分析

1.首先是调用该滑坡的办法,你能够把该办法放在网址所要加载的公共类的地方,比方每便访谈网址都会调用该滑坡方法开展削减。当然,这几个只是在支付情状才会每一回都调用,假若是线上的条件,在您的网站发二回新本子的时候,调用叁回用来生成压缩版的静态财富就足以了。

class MY_Controller extends CI_Controller { public function __construct() { parent::__construct(); //压缩jscss能源文件 $this->compressResHandle(); } /** * 压缩js、css财富文件(优化) * @return [type] [description] */ private function compressResHandle() { $this->load->library('Res迷你fier'); //压缩钦赐文件夹下的财富文件 $this->resminifier->compressRes(); } }

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class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library('ResMinifier');
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}

2.随后就调用了 ResMinifier类里的 compressRes方法。在那处自身先附上 ResMinifier那一个类的代码,然后方便一步步进行剖释传授

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); /** * 财富压缩类 */ class ResMinifier { /** 供给收缩的财富目录*/ public $compressResDir = ['css', 'js']; /** 忽视压缩的门路,比如此处是js/icon最初的路线忽略压缩*/ public $compressResIngorePrefix = ['js/icon']; /** 能源根目录*/ public $resRootDir; /** 资源版本文件路线*/ private $resStatePath; public function __construct() { $this->resRootDir = WEBROOT . 'www/'; $this->resStatePath = WEBROOT . 'www/resState.php'; } public function compressRes() { //获取寄存版本的能源文件 $resState = $this->getResState(); $count = 0; //开首遍历需求减小的能源目录 foreach ($this->compressResDir as $resDir) { foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) { //获取该能源文件的相对路径$filePath = str_replace('\', '/', $file->getRealPath()); //获取文件相对路线 $object = substr($filePath, strlen($this->resRootDir)); //计算文件的本子号 $state = $this->_getResStateVersion($filePath); //获取文件的多少个参数值 if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) { continue; } //压缩文件的相对路线 $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject); //************此处p决断是最着重片段之一*****************// //推断文件是不是留存且早就改成过 if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFile帕特h)) { continue; } //确认保证/www/min/目录可写 $this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress) { $this->compressResFileAndSave($filePath, $minFilePath); } else { copy($filePath, $minFilePath); } $resState[$object] = $state; $resState[$minObject] = ''; $count++; if ($count == 50) { $this->_saveResState($resState); $count = 0; } } } if($count) $this->_saveResState($resState); } public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) { //获取能源相对路线 $filePath = $this->resRootDir . $object; //推断财富是否存在 if (!file_exists($filePath)) return "财富文件不设有{$filePath}"; //版本号 $state = $this-> _getResStateVersion($filePath); //文件名后缀 $extension = pathinfo($filePath, PATHINFO_EXTENSION); //是还是不是要削减 $needCompress = true; //判定能源文件是或不是是以 .min.css或然.min.js结尾的 //此类结尾常常都以已减弱过,譬喻jquery.min.js,就无须再压缩了 if (str_end_with($object, '.min.'.$extension, true)) { //压缩后的能源寄存路线,放在 /www/min/ 目录下 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension; $needCompress = false; } else if (in_array($extension, $this->compressResDir)) { //此处是急需减少的文件目录 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; //看看是不是是忽视的门路前缀 foreach ($this->compressResIngorePrefix as $v) { if (str_start_with($object, $v, true)) { $needCompress = false; } } } else { $minObject = 'min/'.$object; $needCompress = false; } return true; } /** * 获取贮存能源版本的文本 * 它是坐落三个数组里 * $resState = array( * '文件路线' => '对应的本子号', * '文件路线' => '对应的版本号', * '文件路线' => '对应的本子号', * ); * @return [type] [description] */ public function getResState() { if (file_exists($this->resStatePath)) { require $this->resStatePath; return $resState; } return []; } /** * 总结文件的版本号,那么些是依据计算文件MD5散列值获得版本号 * 只要文件内容更换了,所计算获得的散列值就能够不一致等 * 用于决断财富文件是还是不是有变动过 * @param [type] $filePath [description] * @return [type] [description] */ public function _getResStateVersion($filePath) { return base_convert(crc32(md5_file($filePath)), 10, 36); } /** * 确认保障目录可写 * @param [type] $dir [description] * @return [type] [description] */ private function _ensureWritableDir($dir) { if (!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir, 0777); } else if (!is_writable($dir)) { @chmod($dir, 0777); if (!is_writable($dir)) { show_error('目录'.$dir.'不可写'); } } } /** * 将缩减后的能源文件写入到/www/min/下去 * @param [type] $filePath [description] * @param [type] $minFilePath [description] * @return [type] [description] */ private function compressResFileAndSave($filePath, $minFilePath) { if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) { //$CI->exceptions->show_exception("写入文件{$minFilePath}败北"); show_error("写入文件{$minFilePath}退步", -1); } } /** * 压缩财富文件 * @param [type] $filePath [description] * @return [type] [description] */ private function compressResFile($filePath) { $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if ($extension === 'js') { require_once 'JShrink/Minifier.php'; return JShrinkMinifier::minify(file_get_contents($filePath)); } else if ($extension ==='css') { $content = file_get_contents($filePath); $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content); $content = str_replace(["rn", "r", "n"], '', $content); $content = preg_replace('/([{}),;:>])s+/', '$1', $content); $content = preg_replace('/s+([{}),;:>])/', '$1', $content); $content = str_replace(';}', '}', $content); return $content; } else { //$CI->exceptions->show_exception("不援救压缩{extension}文件[$filePath]"); show_error("不援助压缩{extension}文件[$filePath]", -1); } } private function _saveResState($resState) { ksort($resState); $content = "<?phpnn$resState = array(n"; foreach ($resState as $k => $v) { $content .= "t '$k' => '$v',n"; } $content .= ");nn"; file_put_contents($this->resStatePath, $content); } } 点击展开能源压缩类

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* 资源压缩类
*/
class ResMinifier {
    /** 需要压缩的资源目录*/
    public $compressResDir = ['css', 'js'];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = ['js/icon'];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . 'www/';
        $this->resStatePath = WEBROOT . 'www/resState.php';
    }
 
    public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;
 
        //开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace('\', '/', $file->getRealPath());
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);
 
                //获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }
 
                //压缩文件的绝对路径
                $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }
 
                //确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }
 
                $resState[$object] = $state;
                $resState[$minObject] = '';
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);
    }
 
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, '.min.'.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = 'min/'.$object;
            $needCompress = false;
        }
        return true;
    }
 
    /**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }
 
    /**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }
 
    /**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error('目录'.$dir.'不可写');
            }
        }
    }
 
    /**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === 'js') {
            require_once 'JShrink/Minifier.php';
            return JShrinkMinifier::minify(file_get_contents($filePath));
        } else if ($extension ==='css') {
            $content = file_get_contents($filePath);
            $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content);
            $content = str_replace(["rn", "r", "n"], '', $content);
            $content = preg_replace('/([{}),;:>])s+/', '$1', $content);
            $content = preg_replace('/s+([{}),;:>])/', '$1', $content);
            $content = str_replace(';}', '}', $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }
 
    private function _saveResState($resState) {
        ksort($resState);
        $content = "<?phpnn$resState = array(n";
        foreach ($resState as $k => $v) {
            $content .= "t '$k' => '$v',n";
        }
        $content .= ");nn";
        file_put_contents($this->resStatePath, $content);
    }
 
}
 
点击打开 资源压缩类

整套类抢先四分之一代码作者都加了解说,方便我们相当的慢精通。这里小编也会对每一行代码举办解释。

(1)

PHP

/** 须要降低的能源目录*/ public $compressResDir = ['css', 'js']; /** 忽视压缩的路线,比如此处是js/icon开首的门径忽视压缩*/ public $compressResIngorePrefix = ['js/icon']; /** 财富根目录*/ public $resRootDir; /** 财富版本文件路线*/ private $resStatePath; public function __construct() { $this->resRootDir = WEBROOT . 'www/'; $this->resStatePath = WEBROOT . 'www/resState.php'; }

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/** 需要压缩的资源目录*/
    public $compressResDir = ['css', 'js'];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = ['js/icon'];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . 'www/';
        $this->resStatePath = WEBROOT . 'www/resState.php';
    }

$compressResDir变量是亟需减小的能源目录,若是你有新的拍卖目录,能够在这里变量里若是新的目录名就能够处理。附上自身测验项指标目录图

图片 3

$compressResIngorePrefix 忽视被核减的不二等秘书技的门路前有个别是该数组变量的字符串,举例有三个财富路线为 js/icon/bg.js大概是js/icon_index.js只怕是js/icon.header.js,倘若在该数组中投入了 js/icon那么些字符串,那么财富路线为js/icon起头的都会被忽略掉,也便是间接跳过,不用压缩。(因为能源文件里总有一点是无需降低的呗)

$resRootDir寄存财富根目录的

$resStatePath 那一个是财富版本文件路线

(2)步向compressRes() 方法,大家先深入分析前面这一段代码

PHP

public function compressRes() { //获取存放版本的财富文件 $resState = $this->getResState(); $count = 0;

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public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;

——————————-调用getResState() 讲解start————————————————————-

此地首先是调用 $this->getResState() 方法来博取寄存版本的能源文件,此处先跳到该情势看看是何许写的,其实便是满含该文件,然后回到里面存放版本号的数组,大家看注释可知该文件里寄存版本号的格式(顺便附上海教室让大家看看)

PHP

/** * 获取寄放财富版本的文本 * 它是位于三个数组里 * $resState = array( * '文件路线' => '对应的版本号', * '文件路线' => '对应的版本号', * '文件路线' => '对应的本子号', * ); * @return [type] [description] */ public function getResState() { if (file_exists($this->resStatePath)) { require $this->resStatePath; return $resState; } return []; }

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/**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }

(财富版本文件截图:)

图片 4

——————————-调用getResState() 讲解end————————————————————-

随着看compressRes()里的这一段代码

PHP

//起头遍历须要收缩的能源目录 foreach ($this->compressResDir as $resDir) { foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) { //获取该财富文件的相对路径$filePath = str_replace('\', '/', $file->getRealPath()); //获取文件相对路线 $object = substr($filePath, strlen($this->resRootDir)); //计算文件的本子号 $state = $this->_getResStateVersion($filePath);

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//开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace('\', '/', $file->getRealPath());
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);

首先个遍历的是js和css目录 第3个遍历是将js目录或许css目录里的文书都改成路线情势,

比如说获取文件的相对路线 $file帕特h 的值是那样子的:

/usr/local/apache2/htdocs/project/www/css/home/index.css

而文件的相对路线$object是那样子的 :

css/home/index.css

这里就起来调用$this->_getResStateVersion($filePath)来总括文件的本子号

——————————-调用_getResStateVersion($filePath) 讲解start————————————————————

PHP

/** * 总括文件的本子号,那些是依附总括文件MD5散列值获得版本号 * 只要文件内容改造了,所总结得到的散列值就能不等同 * 用于推断财富文件是不是有改观过 * @param [type] $filePath [description] * @return [type] [description] */ public function _getResStateVersion($filePath) { return base_convert(crc32(md5_file($filePath)), 10, 36); }

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/**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }

——————————-调用_getResStateVersion($filePath) 讲解end————————————————————-

要么到版本号后,再看下一段代码,这里领头调用$this->getObjectInfo()方法,这里得到到压缩文件的相对路线$minObject,是不是供给压缩$needCompress,版本号$state,文件后缀$extension。

PHP

//获取文件的多少个参数值 if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) { continue; }

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//获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }

——————————调用$this->getObjectInfo() 讲解start————————————————————

PHP

/** * 获取能源文件有关音讯 * @param [type] $object 能源文件路径(www/css/home/index.css) * @param [type] $minObject 压缩财富文件路线(www/min/css/home/index.ae123a.css) * @param [type] $needCompress 是还是不是须要压缩 * @param [type] $state 文件版本号 * @param [type] $extension 文件名后缀 * @return [type] [description] */ public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) { //获取财富绝对路线 $filePath = $this->resRootDir . $object; //判别能源是不是留存 if (!file_exists($file帕特h)) return "财富文件空中楼阁{$filePath}"; //版本号 $state = $this-> _getResStateVersion($filePath); //文件名后缀 $extension = pathinfo($filePath, PATHINFO_EXTENSION); //是还是不是要缩减 $needCompress = true; //决断财富文件是不是是以 .min.css只怕.min.js结尾的 //此类结尾平常都是已压缩过,比方jquery.min.js,就不要再压缩了 if (str_end_with($object, '.min.'.$extension, true)) { //压缩后的财富寄放路线,放在 /www/min/ 目录下 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension; $needCompress = false; } else if (in_array($extension, $this->compressResDir)) { //此处是索要收缩的文件目录 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; //看看是还是不是是忽视的门径前缀 foreach ($this->compressResIngorePrefix as $v) { if (str_start_with($object, $v, true)) { $needCompress = false; } } } else { $minObject = 'min/'.$object; $needCompress = false; } return true; }

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/**
     * 获取资源文件相关信息
     * @param  [type] $object       资源文件路径 (www/css/home/index.css)
     * @param  [type] $minObject    压缩资源文件路径 (www/min/css/home/index.ae123a.css)
     * @param  [type] $needCompress 是否需要压缩
     * @param  [type] $state        文件版本号
     * @param  [type] $extension    文件名后缀
     * @return [type]               [description]
     */
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, '.min.'.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = 'min/'.$object;
            $needCompress = false;
        }
        return true;
    }

以此艺术里的每一行代码基本上都有注释了,所以就不一句句进行疏解了,这里首要看上面的论断部分:

if (str_end_with($object, ‘.min.’.$extension, true)) 那么些决断是相比较财富文件路线字串尾部是不是以 .min.$extension 结尾,比方是 jquery.min.js,这种文件本来就是
减弱过的公文,所以就不用再举行压缩管理了, $minObject 那一个变量贮存的是压缩后的能源文件路线。
此处附上str_end_with()函数的代码:

PHP

/** * 判别 subject 是不是以 search结尾, 参数钦点是不是忽视大小写 * @param [type] $subject [description] * @param [type] $search [description] * @param boolean $ignore_case [description] * @return [type] [description] */ function str_end_with($subject, $search, $ignore_case = false) { $len2 = strlen($search); if (0 === $len2) return true; $len1 = strlen($subject); if ($len2 > $len1) return false; if ($ignore_case) { return 0 === strcmp(substr($subject, $len1 - $len2), $search); } else { return 0 === strcasecmp(substr($subject, $len1 - $len2), $search); } }

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/**
     * 判断 subject 是否以 search结尾, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_end_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len2 > $len1) return false;
        if ($ignore_case) {
            return 0 === strcmp(substr($subject, $len1 - $len2), $search);
        } else {
            return 0 === strcasecmp(substr($subject, $len1 - $len2), $search);
        }
    }

if (in_array($extension, $this->compressResDir),那个推断正是是不是是须求处理的四个目录里的。

接下来中间的foreach ($this->compressResIngorePrefix as $v) { if (str_start_with($object, $v, true)) { $needCompress = false; } }

本条是推断是或不是是以$this->compressResIngorePrefix属性定义的前面部分字串开端的路线,是的话就轮廓压缩该能源文件。

决断到最后else 正是注脚该财富文件没有要求减小了,最后是回到$minObject,$needCompress,$state,$extension那多个变量。

——————————-调用$this->getObjectInfo() 讲解end————————————————————-

到此处再而三回到看 compressRes()方法里面包车型大巴代码

PHP

//压缩文件的相对路线 $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject); //************此处p判断是最重要部分之一*****************// //推断文件是或不是留存且早就改成过 if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) { continue; }

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//压缩文件的绝对路径
                $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }

这段代码首先是东拼西凑出压缩文件的相对路线,

接着上边这一个论断是第一的局地,通过那些决断就能够领会该财富文件是还是不是被退换过,借使退换过的话,就重新对该资源文件进行压缩,即便没退换过,就接二连三管理下三个财富文件。看这里的论断:isset($resState[$object]) && $resState[$object] == $state,这么些论断正是剖断该公文路线是不是留存  并且文件中对应的版本号和测算出的版本号是不是还同样;isset($resState[$minObject]) &&file_exists($minFilePath),那些是决断压缩文件路线是不是留存,何况该压缩文件是或不是实际存在目录中。

看下一段代码,倘使能走到这一片段,表明当前的这么些能源文件是被改动过的(代码修改过),那么此时就对文件进行削减操作了

PHP

//确认保障/www/min/目录可写 $this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress) { $this->compressResFileAndSave($filePath, $minFilePath); } else { copy($filePath, $minFilePath); }

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//确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }

$this->_ensureWritableDir(),此办法是要保障新成立的www/min目录是可写的,这里附上代码:

——————————-调用$this->_ensureWritableDir() 讲解start————————————————————-

PHP

/** * 确定保障目录可写 * @param [type] $dir [description] * @return [type] [description] */ private function _ensureWritableDir($dir) { if (!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir, 0777); } else if (!is_writable($dir)) { @chmod($dir, 0777); if (!is_writable($dir)) { show_error('目录'.$dir.'不可写'); } } }

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/**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error('目录'.$dir.'不可写');
            }
        }
    }

——————————-调用$this->_ensureWritableDir() 讲解end————————————————————-

if ($needCompress),这几个推断能源文件是还是不是需求裁减,须要的话调用$this->compressResFileAndSave($filePath, $minFilePath);无需的话,直接复制文件到压缩文件路线 copy($file帕特h, $minFilePath);

先看$this->compressResFileAndSave()

——————————-调用$this->compressResFileAndSave() 讲解start————————————————————-

PHP

/** * 将缩减后的能源文件写入到/www/min/下去 * @param [type] $filePath [description] * @param [type] $minFilePath [description] * @return [type] [description] */ private function compressResFileAndSave($filePath, $minFilePath) { if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) { //$CI->exceptions->show_exception("写入文件{$minFile帕特h}失利"); show_error("写入文件{$minFilePath}失利", -1); } } /** * 压缩财富文件 * @param [type] $filePath [description] * @return [type] [description] */ private function compressResFile($filePath) { $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if ($extension === 'js') { require_once 'JShrink/Minifier.php'; return JShrinkMinifier::minify(file_get_contents($filePath)); } else if ($extension ==='css') { $content = file_get_contents($filePath); $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content); $content = str_replace(["rn", "r", "n"], '', $content); $content = preg_replace('/([{}),;:>])s+/', '$1', $content); $content = preg_replace('/s+([{}),;:>])/', '$1', $content); $content = str_replace(';}', '}', $content); return $content; } else { //$CI->exceptions->show_exception("不扶植压缩{extension}文件[$filePath]"); show_error("不扶持压缩{extension}文件[$filePath]", -1); } }

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/**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === 'js') {
            require_once 'JShrink/Minifier.php';
            return JShrinkMinifier::minify(file_get_contents($filePath));
        } else if ($extension ==='css') {
            $content = file_get_contents($filePath);
            $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content);
            $content = str_replace(["rn", "r", "n"], '', $content);
            $content = preg_replace('/([{}),;:>])s+/', '$1', $content);
            $content = preg_replace('/s+([{}),;:>])/', '$1', $content);
            $content = str_replace(';}', '}', $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }

先削减,再将裁减后的内容写入到 压缩文件路线里去。

小编们先看下那么些压缩方法:

$this->compressResFile($filePath); 此方法中分两类压缩,第一类时对js文件举办削减,第二类的对css文件举行压缩。先说js压缩,这里是调用贰个JShrink的类,它

一个用来压缩js文件的PHP类,百度能够找到,调用那一个类的minify()这么些形式就足以减小了;而css的压缩利用正则替换到缩小,把那多少个空格换行什么的都去掉。到此就减弱成功

了,然后再将核减后的能源写入到相应的压缩文件路径里去。

——————————-调用$this->compressResFileAndSave() 讲解end————————————————————-

随后继续看compressRes()那一个主意里的代码,这里伊始正是保存新的本子号到$resState数组里 $object=>$state,还应该有正是新的滑坡路线$minObject,而那边$count++的机能是,当以此轮回50次就将 $resState那么些数组写入三回到 resState.php文件里,这里是出于审慎思量而已,若是你不加这一个$count的拍卖那有的也能够,最终写入二遍就行了。

PHP

$resState[$object] = $state; $resState[$minObject] = ''; $count++; if ($count == 50) { $this->_saveResState($resState); $count = 0; } } } if($count) $this->_saveResState($resState);

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$resState[$object] = $state;
                $resState[$minObject] = '';
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);

这里看$this->_saveResState($resState),那一个方法正是将$resState数组写入到resState.php文件里去的方法。

——————————-调用$this->_saveResState($resState) 讲解start————————————————————-

PHP

private function _saveResState($resState) { ksort($resState); $content = "<?phpnn$resState = array(n"; foreach ($resState as $k => $v) { $content .= "t '$k' => '$v',n"; } $content .= ");nn"; file_put_contents($this->resStatePath, $content); }

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private function _saveResState($resState) {
        ksort($resState);
        $content = "<?phpnn$resState = array(n";
        foreach ($resState as $k => $v) {
            $content .= "t '$k' => '$v',n";
        }
        $content .= ");nn";
        file_put_contents($this->resStatePath, $content);
    }

——————————-调用$this->_saveResState($resState) 讲解end————————————————————-

拍卖完后,看看所生成的文本,这里二个文本会有八个本子,旧版本从不去除掉,在支付遭受下删不删除都没难题,这里怎么不删除旧版本的压缩文件,那就关系到在更新八个应用服务器代码时所要注意的难点里。在这里笔者就多讲明一点啊,轻易地比方吗,日常大型项目中的静态资源和模板文件是布局在分化的机器集群上的,上线的进度中,静态财富和页面文件的布局时间间距大概会相当长,对于三个大型网络使用来讲就是在四个非常的小的时日间距内,都有不小希望出现新顾客访问,若是旧版本的静态财富删除了,但新本子的静态能源还没计划到位,那么客户就加载不到该静态财富,结果由此可见,所以,平时景观下大家会保留旧版本的静态财富,然后等全部片段配置产生了,再通过自然的剧本删除掉也没涉及,其实,这个不必删除也是足以的,你思索,三个品类发一遍版本,才会调用三回能源文件降低方法,它只会对修改过的文件举办生成新版本号的静态文件而已。这么些就看个人的做法了。

图片 5

我们能够张开看看,下边这些正是收缩后的公文的代码了,文件原大小为16K,压缩后差不离少了5K,今后是11K,压缩比大致是2/3,借使在大型项目中,多少个复杂点的页面会有相当大的静态财富文件要加载,通过此格局,大大地增加了加载的快慢。(也有一点点朋友感觉压缩个几K或许十几K算什么,完全能够忽略,其实自个儿想说的是,当你在大型项目中优化品种的时候,能够减弱几K的代码,也给网址的质量提升了一大截)

图片 6

到此,能源减弱管理就深入分析达成了。其实,有早晚基础的恋人,能够一贯看本人共享的拾贰分代码就能够了,若是精通不了,再看自个儿下面这一步步的剖释教学,作者是地处能看过来此博客的爱人,无论技艺是好依旧是稍弱,都能看懂,所以才对代码一步步地进行分析疏解。(希望各位多多指教堂哥)

————————————————————————————————————————-

  1. 接下去正是教学怎么着替换压缩后的财富文件了。

这个到Home.php

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Home extends MY_Controller { public function index() { $this->smartyData['test'] = 111; //那个暗中同意是加载 www/css/home/index.css文件 $this->addResLink('index.css'); //那个暗许是加载www/js/jquery.all.min.js文件 $this->addResLink('/jquery.all.min.js'); //那些暗中同意是加载www/js/index.js文件 $this->addResLink('index.js'); $this->displayView('home/index.tpl'); } }

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class Home extends MY_Controller {
    public function index() {
        $this->smartyData['test'] = 111;
        //这个默认是加载 www/css/home/index.css文件
        $this->addResLink('index.css');
        //这个默认是加载www/js/jquery.all.min.js文件
        $this->addResLink('/jquery.all.min.js');
        //这个默认是加载www/js/index.js文件
        $this->addResLink('index.js');
        $this->displayView('home/index.tpl');
    }
}

上边有加载多个能源文件,大家先看看$this->addResLink();那个方法,这些方法放在My_Controller.php里:

PHP

/** * 财富路线 * @param [type] $filePath [description] */ protected function addResLink($filePath) { list($filePath, $query) = explode('?', $filePath . '?'); $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); foreach ($this->_resLink as $v) { if (false === array_search($filePath, $this->_resLink[$extension])) { $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query; } } return $this; }

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/**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode('?', $filePath . '?');
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query;
            }
        }
 
        return $this;
    }

这里根本是剖断了资源文件是css照旧js,然后将其寄存在 $this->_resLink那脾天性里。

那么这里笔者就先附上My_Controller.php这几个父类的有着代码吧

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class MY_Controller extends CI_Controller { public function __construct() { parent::__construct(); //压缩jscss能源文件 $this->compressResHandle(); } //==========================使用SMARTY模板引擎================================// /* 斯马特y母版页文件路线 */ protected $masterPage = 'default.tpl'; /* 视图像和文字件路线*/ protected $smartyView; /* 要赋值给smarty视图的多寡*/ protected $smartyData = []; /* 财富文件*/ protected $_resLink = ['js'=>[], 'css'=>[]]; /** * 使用母版页输出贰个视图 * @return [type] [description] */ protected function displayView($viewName = null, $masterPage = null) { //为空则选取默许母版 if ($masterPage == null) $masterPage = $this->masterPage; //获取视图的出口内容 $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage); $output = ''; //添加css Link foreach ($this->_resLink['css'] as $v) { $output .= res_link($v); } //内容部分 $output .= $viewContent; //尾巴部分增添js 链接 foreach ($this->_resLink['js'] as $v) { $output .= res_link($v); } //发送最后输出结果以致服务器的 HTTP 头到浏览器 $this->output->_display($output); return $output; } private function _fetchView($smartyData, &$viewName, &$masterPage) { if ($viewName == null) $viewName = $this->smartyView; if (empty($this->smarty)) { require_once SMARTY_DIXC90.'Smarty.class.php'; $this->smarty = new 斯玛特y(); $this->smarty->setCompileDir(APPPATH . 'cache/'); $this->smarty->setCacheDir(APPPATH . 'cache/'); } //设置视图真实路线 $this->_getViewDir(true, $viewName, $masterPage, $templateDir); foreach ($smartyData as $k => $v) { $this->smarty->assign($k, $v); } if (empty($masterPage)) { return $this->smarty->fetch($viewName); } else { $this->smarty->assign('VIEW_MAIN', $viewName); return $this->smarty->fetch($masterPage); } } /** * 能源路线 * @param [type] $filePath [description] */ protected function addResLink($filePath) { list($filePath, $query) = explode('?', $filePath . '?'); $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); foreach ($this->_resLink as $v) { if (false === array_search($filePath, $this->_resLink[$extension])) { $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query; } } return $this; } private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) { if ('/' === $viewName[0]) $viewName = substr($viewName, 1); //是或不是选拔模板,有,则路由到 /views/master_page/*****.tpl下去 if ($masterPage) { $masterPage = '/' === $masterPage[0] ? substr($masterPage, 1) : ('master_page' .'/'. $masterPage); } //是不是设置模板目录 if ($setTemplateDir) { $templateDir = VIEWPATH; $this->smarty->setTemplateDir($templateDir); } } /** * 压缩js、css财富文件(优化) * @return [type] [description] */ private function compressResHandle() { $this->load->library('ResMinifier'); //压缩钦命文件夹下的财富文件 $this->resminifier->compressRes(); } } 点击展开 My_Controller.php

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
 
    //==========================使用SMARTY模板引擎================================//
    /* Smarty母版页文件路径 */
    protected $masterPage = 'default.tpl';
    /* 视图文件路径*/
    protected $smartyView;
    /* 要赋值给smarty视图的数据*/
    protected $smartyData = [];
    /* 资源文件*/
    protected $_resLink = ['js'=>[], 'css'=>[]];
 
    /**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = '';
 
        //添加css Link
        foreach ($this->_resLink['css'] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink['js'] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.'Smarty.class.php';
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . 'cache/');
            $this->smarty->setCacheDir(APPPATH . 'cache/');
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign('VIEW_MAIN', $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }
 
    /**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode('?', $filePath . '?');
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query;
            }
        }
 
        return $this;
    }
 
    private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) {
        if ('/' === $viewName[0]) $viewName = substr($viewName, 1);
 
        //是否使用模板,有,则路由到 /views/master_page/*****.tpl下去
        if ($masterPage) {
            $masterPage = '/' === $masterPage[0] ? substr($masterPage, 1) : ('master_page' .'/'. $masterPage);
        }
 
        //是否设置模板目录
        if ($setTemplateDir) {
            $templateDir = VIEWPATH;
            $this->smarty->setTemplateDir($templateDir);
        }
    }
 
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library('ResMinifier');
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}
 
点击打开 My_Controller.php

打字与印刷出来 $this->_resLink那些天性的协会是那样子的:

PHP

Array ( [js] => Array ( [0] => /jquery.all.min.js [1] => index.js ) [css] => Array ( [0] => index.css ) )

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Array
(
    [js] => Array
        (
            [0] => /jquery.all.min.js
            [1] => index.js
        )
 
    [css] => Array
        (
            [0] => index.css
        )
 
)

再回来Home.php里面调用 $this->displayView(‘home/index.tpl’);

咱俩看这几个方法:

PHP

/** * 使用母版页输出二个视图 * @return [type] [description] */ protected function displayView($viewName = null, $masterPage = null) { //为空则接纳私下认可母版 if ($masterPage == null) $masterPage = $this->masterPage; //获取视图的出口内容 $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage); $output = ''; //添加css Link foreach ($this->_resLink['css'] as $v) { $output .= res_link($v); } //内容部分 $output .= $viewContent; //尾巴部分加多js 链接 foreach ($this->_resLink['js'] as $v) { $output .= res_link($v); } //发送最后输出结果以致服务器的 HTTP 头到浏览器 $this->output->_display($output); return $output; } private function _fetchView($smartyData, &$viewName, &$masterPage) { if ($viewName == null) $viewName = $this->smartyView; if (empty($this->smarty)) { require_once SMARTY_DI奇骏.'斯马特y.class.php'; $this->smarty = new Smarty(); $this->smarty->setCompileDir(应用软件PATH . 'cache/'); $this->smarty->setCacheDir(APPPATH . 'cache/'); } //设置视图真实路线 $this->_getViewDir(true, $viewName, $masterPage, $templateDir); foreach ($smartyData as $k => $v) { $this->smarty->assign($k, $v); } if (empty($masterPage)) { return $this->smarty->fetch($viewName); } else { $this->smarty->assign('VIEW_MAIN', $viewName); return $this->smarty->fetch($masterPage); } }

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/**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = '';
 
        //添加css Link
        foreach ($this->_resLink['css'] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink['js'] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.'Smarty.class.php';
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . 'cache/');
            $this->smarty->setCacheDir(APPPATH . 'cache/');
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign('VIEW_MAIN', $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }

这一段代码没有一部分正是调用了斯马特y模板引擎的原委,这些关于斯马特y的知识作者就不讲了,大家能够友善百度,这里根本讲 res_link() 这么些函数,正是通过这么些函数来拓宽能源文件替换的。先看那个函数的代码:

PHP

/** * 输出 HttpHead 中的财富总是。 css/js 自动推断真实路线 * @param string 文件路线 * @return string */ function res_link($file) { $file = res_path($file, $extension); if ($extension === 'css') { return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>'; } else if ($extension === 'js') { return '<script type="text/javascript" src="'.$file.'"></script>'; } else { return false; } }

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/**
     * 输出 HttpHead 中的资源连接。 css/js 自动判断真实路径
     * @param  string  文件路径
     * @return string      
     */
    function res_link($file) {
        $file = res_path($file, $extension);
 
        if ($extension === 'css') {
           return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>';
        } else if ($extension === 'js') {
            return '<script type="text/javascript" src="'.$file.'"></script>';
        } else {
            return false;
        }
    }

此地最要害正是 res_path() 函数了,那几个函数能活动路由能源的忠实路径。比方:index.css = > css/home/index.css

该函数最要害的一个功力是替换能源的降低版本。

直白看代码:

PHP

/** * 智能路由能源实际路线 * @param string 路径 * @param string 扩展名 * @return string 真实路线 */ function res_path($file, &$extension) { //检查是或不是留存询问字符串 list($file, $query) = explode('?', $file . '?'); //获得扩充名 $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION)); // $file = str_replace('\', '/', $file); //取稳妥前调控器名 global $class; if ($class == null) exit('can not get class name'); $className = strtolower($class); //此处的条条框框是如此: //比方,假诺不加 / ,Home调整器对应的格式是: index.css,那么 此处的路线会产生css/home/index.css //借使有 / ,调整器的格式能够是 /main.css,那么这里的路线会产生 css/main.css(公用的css类) if ('/' !== $file[0]) { //index.css => css/home/index.css $object = $extension .'/'. $className .'/' . $file; } else { // /css/main.css 可能 /main.css => css/main.css $object = substr($file, 1); //若object是 main.css ,则自动抬高 扩充名目录 => css/main.css if (0 !== strncasecmp($extension, $object, strlen($extension))) { $object = $extension . '/' . $object; } } //财富真实路线 $filepath = WEBROOT.'www/'.$object; //替换压缩版本,那部分逻辑与公事减少逻辑对应 if (in_array($extension, array('css', 'js'))) { if(!str_start_with($object, 'min/') && file_exists(APPPATH.'libraries/ResMinifier.php')) { require_once 应用程式PATH.'libraries/ResMinifier.php'; $resminifier = new Res迷你fier(); //获取寄存财富版本的文本的数组变量 $resState = $resminifier->getResState(); //总计取妥帖前文件版本号 $state = $resminifier->_getResStateVersion($filepath); //判别该版本号是还是不是存在 if (isset($resState[$object])) { //决断是或不是是.min.css或.min.js结尾 if (str_end_with($object, '.min.'.$extension)) { //将版本号拼接上去,然后拿走min的文书路线 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state . '.' . $extension; } else { //将版本号拼接上去,然后拿走min的文件路线 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; } //决断min的门径是还是不是存在在$resState里面 if (isset($resState[$minObject])) { $object = $minObject; $query = ''; } } } $file = RES_BASE_URL . $object; } return ($query == null) ? $file : ($file .'?'. $query); }

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/**
     * 智能路由资源真实路径
     * @param  string      路径
     * @param  string      扩展名
     * @return string       真实路径
     */
    function res_path($file, &$extension) {
        //检查是否存在查询字符串
        list($file, $query) = explode('?', $file . '?');
        //取得扩展名
        $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION));
        //
        $file = str_replace('\', '/', $file);
        //取得当前控制器名
        global $class;
        if ($class == null) exit('can not get class name');
        $className = strtolower($class);
 
        //此处的规则是这样:
        //例如,如果不加 / ,Home控制器对应的格式是: index.css,那么 此处的路径会变成css/home/index.css
        //假如有 / ,控制器的格式可以是 /main.css,那么此处的路径会变成 css/main.css(公用的css类)
        if ('/' !== $file[0]) {
            //index.css => css/home/index.css
            $object = $extension .'/'. $className .'/' . $file;
        } else {
            // /css/main.css 或者 /main.css => css/main.css
            $object = substr($file, 1);
 
            //若object是 main.css ,则自动加上 扩展名目录 => css/main.css
            if (0 !== strncasecmp($extension, $object, strlen($extension))) {
                $object = $extension . '/' . $object;
            }
        }
        //资源真实路径
        $filepath = WEBROOT.'www/'.$object;
 
        //替换压缩版本,这部分逻辑与文件压缩逻辑对应
        if (in_array($extension, array('css', 'js'))) {
            if(!str_start_with($object, 'min/') && file_exists(APPPATH.'libraries/ResMinifier.php')) {
                require_once APPPATH.'libraries/ResMinifier.php';
                $resminifier = new ResMinifier();
                //获取存放资源版本的文件的数组变量
                $resState = $resminifier->getResState();
                //计算得到当前文件版本号
                $state = $resminifier->_getResStateVersion($filepath);
                //判断该版本号是否存在
                if (isset($resState[$object])) {
                    //判断是否是.min.css或.min.js结尾
                    if (str_end_with($object, '.min.'.$extension)) {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state . '.' . $extension;
                    } else {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
                    }
                    //判断min的路径是否存在在$resState里面
                     if (isset($resState[$minObject])) {
                        $object = $minObject;
                        $query = '';
                     }
                }
 
            }
 
            $file = RES_BASE_URL . $object;
        }
 
        return ($query == null) ? $file : ($file .'?'. $query);
 
    }

代码基本上都给了解说,方便大家轻松去领悟,前边一部分是智能路线css、js能源的路径,后边一部分是替换压缩版本,这一有个别的逻辑其实和能源减少这里的逻辑基本均等,正是经过财富文件路线,进行判定和拍卖,最后获得能源的缩减版本的门径,最终就将财富的压缩版本的路子再次回到去,放在'<link rel=”stylesheet” type=”text/css” href=”‘ . $file . ‘”/>’里面。那样  ,就水到渠成地将财富文件路线替换到了削减版本的财富文件路线,并且在模板输出时,输出的是减弱后的财富文件。

到此,财富替换的剧情就到此讲授甘休。而整一项本领也剖判到此。

三、总结

在那小编聚焦地附着本博文解说中的多少个文件代码:

Home.php

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Home extends MY_Controller { public function index() { $this->smartyData['test'] = 111; //那个私下认可是加载 www/css/home/index.css文件 $this->addResLink('index.css'); //这几个暗中同意是加载www/js/jquery.all.min.js文件 $this->addResLink('/jquery.all.min.js'); //这一个暗中同意是加载www/js/index.js文件 $this->addResLink('index.js'); $this->displayView('home/index.tpl'); } } 点击展开

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class Home extends MY_Controller {
    public function index() {
        $this->smartyData['test'] = 111;
        //这个默认是加载 www/css/home/index.css文件
        $this->addResLink('index.css');
        //这个默认是加载www/js/jquery.all.min.js文件
        $this->addResLink('/jquery.all.min.js');
        //这个默认是加载www/js/index.js文件
        $this->addResLink('index.js');
        $this->displayView('home/index.tpl');
    }
}
 
点击打开

My_Controller.php

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class MY_Controller extends CI_Controller { public function __construct() { parent::__construct(); //压缩jscss财富文件 $this->compressResHandle(); } //==========================使用SMARTY模板引擎================================// /* 斯马特y母版页文件路线 */ protected $masterPage = 'default.tpl'; /* 视图像和文字件路线*/ protected $smartyView; /* 要赋值给smarty视图的数码*/ protected $smartyData = []; /* 能源文件*/ protected $_resLink = ['js'=>[], 'css'=>[]]; /** * 使用母版页输出一个视图 * @return [type] [description] */ protected function displayView($viewName = null, $masterPage = null) { //为空则选取暗中同意母版 if ($masterPage == null) $masterPage = $this->masterPage; //获取视图的输出内容 $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage); $output = ''; //添加css Link foreach ($this->_resLink['css'] as $v) { $output .= res_link($v); } //内容部分 $output .= $viewContent; //尾部增添js 链接 foreach ($this->_resLink['js'] as $v) { $output .= res_link($v); } //发送最后输出结果以至服务器的 HTTP 头到浏览器 $this->output->_display($output); return $output; } private function _fetchView($smartyData, &$viewName, &$masterPage) { if ($viewName == null) $viewName = $this->smartyView; if (empty($this->smarty)) { require_once SMARTY_DIRubicon.'斯马特y.class.php'; $this->smarty = new 斯马特y(); $this->smarty->setCompileDir(APPPATH . 'cache/'); $this->smarty->setCacheDir(APPPATH . 'cache/'); } //设置视图真实路线 $this->_getViewDir(true, $viewName, $masterPage, $templateDir); foreach ($smartyData as $k => $v) { $this->smarty->assign($k, $v); } if (empty($masterPage)) { return $this->smarty->fetch($viewName); } else { $this->smarty->assign('VIEW_MAIN', $viewName); return $this->smarty->fetch($masterPage); } } /** * 能源路线 * @param [type] $filePath [description] */ protected function addResLink($filePath) { list($filePath, $query) = explode('?', $filePath . '?'); $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); foreach ($this->_resLink as $v) { if (false === array_search($filePath, $this->_resLink[$extension])) { $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query; } } return $this; } private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) { if ('/' === $viewName[0]) $viewName = substr($viewName, 1); //是还是不是使用模板,有,则路由到 /views/master_page/*****.tpl下去 if ($masterPage) { $masterPage = '/' === $masterPage[0] ? substr($masterPage, 1) : ('master_page' .'/'. $masterPage); } //是不是设置模板目录 if ($setTemplateDir) { $templateDir = VIEWPATH; $this->smarty->setTemplateDir($templateDir); } } /** * 压缩js、css能源文件(优化) * @return [type] [description] */ private function compressResHandle() { $this->load->library('ResMinifier'); //压缩钦点文件夹下的财富文件 $this->resminifier->compressRes(); } } 点击张开

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
 
class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
 
    //==========================使用SMARTY模板引擎================================//
    /* Smarty母版页文件路径 */
    protected $masterPage = 'default.tpl';
    /* 视图文件路径*/
    protected $smartyView;
    /* 要赋值给smarty视图的数据*/
    protected $smartyData = [];
    /* 资源文件*/
    protected $_resLink = ['js'=>[], 'css'=>[]];
 
    /**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = '';
 
        //添加css Link
        foreach ($this->_resLink['css'] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink['js'] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.'Smarty.class.php';
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . 'cache/');
            $this->smarty->setCacheDir(APPPATH . 'cache/');
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign('VIEW_MAIN', $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }
 
    /**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode('?', $filePath . '?');
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .'?'. $query;
            }
        }
 
        return $this;
    }
 
    private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) {
        if ('/' === $viewName[0]) $viewName = substr($viewName, 1);
 
        //是否使用模板,有,则路由到 /views/master_page/*****.tpl下去
        if ($masterPage) {
            $masterPage = '/' === $masterPage[0] ? substr($masterPage, 1) : ('master_page' .'/'. $masterPage);
        }
 
        //是否设置模板目录
        if ($setTemplateDir) {
            $templateDir = VIEWPATH;
            $this->smarty->setTemplateDir($templateDir);
        }
    }
 
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library('ResMinifier');
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}
 
点击打开

ResMinifier.php

PHP

<?php defined('BASEPATH') OR exit('No direct script access allowed'); /** * 财富压缩类 */ class ResMinifier { /** 须要收缩的能源目录*/ public $compressResDir = ['css', 'js']; /** 忽视压缩的门路,譬如此处是js/icon初阶的路线忽视压缩*/ public $compressResIngorePrefix = ['js/icon']; /** 能源根目录*/ public $resRootDir; /** 财富版本文件路线*/ private $resStatePath; public function __construct() { $this->resRootDir = WEBROOT . 'www/'; $this->resStatePath = WEBROOT . 'www/resState.php'; } public function compressRes() { //获取贮存版本的能源文件 $resState = $this->getResState(); $count = 0; //开首遍历要求减少的财富目录 foreach ($this->compressResDir as $resDir) { foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) { //获取该资源文件的相对路径$filePath = str_replace('\', '/', $file->getRealPath()); //获取文件相对路线 $object = substr($filePath, strlen($this->resRootDir)); //总计文件的版本号 $state = $this->_getResStateVersion($filePath); //获取文件的多少个参数值 if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) { continue; } //压缩文件的相对路线 $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject); //************此处p剖断是最根本片段之一*****************// //判别文件是还是不是存在且已经改动过 if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) { continue; } //确定保证/www/min/目录可写 $this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress) { $this->compressResFileAndSave($filePath, $minFilePath); } else { copy($filePath, $minFilePath); } $resState[$object] = $state; $resState[$minObject] = ''; $count++; if ($count == 50) { $this->_saveResState($resState); $count = 0; } } } if($count) $this->_saveResState($resState); } /** * 获取财富文件有关新闻 * @param [type] $object 财富文件路线 (www/css/home/index.css) * @param [type] $minObject 压缩财富文件路线 (www/min/css/home/index.ae123a.css) * @param [type] $needCompress 是或不是要求压缩 * @param [type] $state 文件版本号 * @param [type] $extension 文件名后缀 * @return [type] [description] */ public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) { //获取财富相对路线 $filePath = $this->resRootDir . $object; //决断财富是不是留存 if (!file_exists($file帕特h)) return "能源文件不设有{$filePath}"; //版本号 $state = $this-> _getResStateVersion($filePath); //文件名后缀 $extension = pathinfo($filePath, PATHINFO_EXTENSION); //是不是要缩减 $needCompress = true; //判定财富文件是不是是以 .min.css或然.min.js结尾的 //此类结尾经常都是已压缩过,举个例子jquery.min.js,就不要再压缩了 if (str_end_with($object, '.min.'.$extension, true)) { //压缩后的财富贮存路线,放在 /www/min/ 目录下 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension; $needCompress = false; } else if (in_array($extension, $this->compressResDir)) { //此处是索要缩短的文件目录 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; //看看是或不是是忽视的门道前缀 foreach ($this->compressResIngorePrefix as $v) { if (str_start_with($object, $v, true)) { $needCompress = false; } } } else { $minObject = 'min/'.$object; $needCompress = false; } return true; } /** * 获取存放财富版本的文件 * 它是身处一个数组里 * $resState = array( * '文件路线' => '对应的本子号', * '文件路线' => '对应的版本号', * '文件路线' => '对应的本子号', * ); * @return [type] [description] */ public function getResState() { if (file_exists($this->resStatePath)) { require $this->resStatePath; return $resState; } return []; } /** * 总括文件的版本号,那么些是依照总括文件MD5散列值获得版本号 * 只要文件内容改换了,所总结获得的散列值就能够分歧 * 用于推断能源文件是还是不是有改观过 * @param [type] $filePath [description] * @return [type] [description] */ public function _getResStateVersion($filePath) { return base_convert(crc32(md5_file($filePath)), 10, 36); } /** * 确认保证目录可写 * @param [type] $dir [description] * @return [type] [description] */ private function _ensureWritableDir($dir) { if (!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir, 0777); } else if (!is_writable($dir)) { @chmod($dir, 0777); if (!is_writable($dir)) { show_error('目录'.$dir.'不可写'); } } } /** * 将回退后的财富文件写入到/www/min/下去 * @param [type] $filePath [description] * @param [type] $minFilePath [description] * @return [type] [description] */ private function compressResFileAndSave($filePath, $minFilePath) { if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) { //$CI->exceptions->show_exception("写入文件{$minFilePath}战败"); show_error("写入文件{$minFilePath}战败", -1); } } /** * 压缩能源文件 * @param [type] $filePath [description] * @return [type] [description] */ private function compressResFile($filePath) { $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if ($extension === 'js') { require_once 'JShrink/Minifier.php'; return JShrinkMinifier::minify(file_get_contents($filePath)); } else if ($extension ==='css') { $content = file_get_contents($filePath); $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content); $content = str_replace(["rn", "r", "n"], '', $content); $content = preg_replace('/([{}),;:>])s+/', '$1', $content); $content = preg_replace('/s+([{}),;:>])/', '$1', $content); $content = str_replace(';}', '}', $content); return $content; } else { //$CI->exceptions->show_exception("不援救压缩{extension}文件[$filePath]"); show_error("不扶持压缩{extension}文件[$filePath]", -1); } } private function _saveResState($resState) { ksort($resState); $content = "<?phpnn$resState = array(n"; foreach ($resState as $k => $v) { $content .= "t '$k' => '$v',n"; } $content .= ");nn"; file_put_contents($this->resStatePath, $content); } } 点击展开

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* 资源压缩类
*/
class ResMinifier {
    /** 需要压缩的资源目录*/
    public $compressResDir = ['css', 'js'];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = ['js/icon'];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . 'www/';
        $this->resStatePath = WEBROOT . 'www/resState.php';
    }
 
    public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;
 
        //开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace('\', '/', $file->getRealPath());
 
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
 
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);
 
                //获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }
 
                //压缩文件的绝对路径
                $minFilePath = str_replace('\', '/', $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }
 
                //确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }
 
                $resState[$object] = $state;
                $resState[$minObject] = '';
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);
    }
 
    /**
     * 获取资源文件相关信息
     * @param  [type] $object       资源文件路径 (www/css/home/index.css)
     * @param  [type] $minObject    压缩资源文件路径 (www/min/css/home/index.ae123a.css)
     * @param  [type] $needCompress 是否需要压缩
     * @param  [type] $state        文件版本号
     * @param  [type] $extension    文件名后缀
     * @return [type]               [description]
     */
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, '.min.'.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state .'.'. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = 'min/'.$object;
            $needCompress = false;
        }
        return true;
    }
 
    /**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *         '文件路径' => '对应的版本号',
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }
 
    /**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }
 
    /**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error('目录'.$dir.'不可写');
            }
        }
    }
 
    /**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === 'js') {
            require_once 'JShrink/Minifier.php';
            return JShrinkMinifier::minify(file_get_contents($filePath));
        } else if ($extension ==='css') {
            $content = file_get_contents($filePath);
            $content = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $content);
            $content = str_replace(["rn", "r", "n"], '', $content);
            $content = preg_replace('/([{}),;:>])s+/', '$1', $content);
            $content = preg_replace('/s+([{}),;:>])/', '$1', $content);
            $content = str_replace(';}', '}', $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }
 
    private function _saveResState($resState) {
        ksort($resState);
        $content = "<?phpnn$resState = array(n";
        foreach ($resState as $k => $v) {
            $content .= "t '$k' => '$v',n";
        }
        $content .= ");nn";
        file_put_contents($this->resStatePath, $content);
    }
 
}
 
点击打开

Common.php

PHP

<?php /** * 输出 HttpHead 中的能源总是。 css/js 自动决断真实路线 * @param string 文件路线 * @return string */ function res_link($file) { $file = res_path($file, $extension); if ($extension === 'css') { return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>'; } else if ($extension === 'js') { return '<script type="text/javascript" src="'.$file.'"></script>'; } else { return false; } } /** * 智能路由能源实际路线 * @param string 路径 * @param string 扩展名 * @return string 真实路线 */ function res_path($file, &$extension) { //检查是或不是留存询问字符串 list($file, $query) = explode('?', $file . '?'); //取得扩张名 $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION)); // $file = str_replace('\', '/', $file); //取妥当前调节器名 global $class; if ($class == null) exit('can not get class name'); $className = strtolower($class); //此处的平整是如此: //举个例子,倘使不加 / ,Home调整器对应的格式是: index.css,那么 此处的路线会产生css/home/index.css //假设有 / ,调节器的格式能够是 /main.css,那么这里的路线会产生 css/main.css(公用的css类) if ('/' !== $file[0]) { //index.css => css/home/index.css $object = $extension .'/'. $className .'/' . $file; } else { // /css/main.css 或然 /main.css => css/main.css $object = substr($file, 1); //若object是 main.css ,则自动抬高 扩张名目录 => css/main.css if (0 !== strncasecmp($extension, $object, strlen($extension))) { $object = $extension . '/' . $object; } } //财富真实路线 $filepath = WEBROOT.'www/'.$object; //替换压缩版本,那有些逻辑与公事裁减逻辑对应 if (in_array($extension, array('css', 'js'))) { if(!str_start_with($object, 'min/') && file_exists(APPPATH.'libraries/ResMinifier.php')) { require_once APPPATH.'libraries/ResMinifier.php'; $resminifier = new ResMinifier(); //获取存放能源版本的公文的数组变量 $resState = $resminifier->getResState(); //总结取妥善前文件版本号 $state = $resminifier->_getResStateVersion($filepath); //决断该版本号是不是存在 if (isset($resState[$object])) { //判定是不是是.min.css或.min.js结尾 if (str_end_with($object, '.min.'.$extension)) { //将版本号拼接上去,然后拿走min的文书路径 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state . '.' . $extension; } else { //将版本号拼接上去,然后拿走min的文件路线 $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension; } //判别min的路子是不是存在在$resState里面 if (isset($resState[$minObject])) { $object = $minObject; $query = ''; } } } $file = RES_BASE_URL . $object; } return ($query == null) ? $file : ($file .'?'. $query); } /** * 剖断 subject 是或不是以 search起头, 参数钦定是或不是忽视大小写 * @param [type] $subject [description] * @param [type] $search [description] * @param boolean $ignore_case [description] * @return [type] [description] */ function str_start_with($subject, $search, $ignore_case = false) { $len2 = strlen($search); if (0 === $len2) return true; $len1 = strlen($subject); if ($len1 < $len2) return false; if ($ignore_case) { return 0 === strncmp($subject, $search, $len2); } else { return 0 === strncasecmp($subject, $search, $len2); } } /** * 判定 subject 是或不是以 search结尾, 参数钦命是或不是忽视大小写 * @param [type] $subject [description] * @param [type] $search [description] * @param boolean $ignore_case [description] * @return [type] [description] */ function str_end_with($subject, $search, $ignore_case = false) { $len2 = strlen($search); if (0 === $len2) return true; $len1 = strlen($subject); if ($len2 > $len1) return false; if ($ignore_case) { return 0 === strcmp(substr($subject, $len1 - $len2), $search); } else { return 0 === strcasecmp(substr($subject, $len1 - $len2), $search); } } 点击张开

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<?php
    /**
     * 输出 HttpHead 中的资源连接。 css/js 自动判断真实路径
     * @param  string  文件路径
     * @return string      
     */
    function res_link($file) {
        $file = res_path($file, $extension);
 
        if ($extension === 'css') {
           return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>';
        } else if ($extension === 'js') {
            return '<script type="text/javascript" src="'.$file.'"></script>';
        } else {
            return false;
        }
    }
 
    /**
     * 智能路由资源真实路径
     * @param  string      路径
     * @param  string      扩展名
     * @return string       真实路径
     */
    function res_path($file, &$extension) {
        //检查是否存在查询字符串
        list($file, $query) = explode('?', $file . '?');
        //取得扩展名
        $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION));
        //
        $file = str_replace('\', '/', $file);
        //取得当前控制器名
        global $class;
        if ($class == null) exit('can not get class name');
        $className = strtolower($class);
 
        //此处的规则是这样:
        //例如,如果不加 / ,Home控制器对应的格式是: index.css,那么 此处的路径会变成css/home/index.css
        //假如有 / ,控制器的格式可以是 /main.css,那么此处的路径会变成 css/main.css(公用的css类)
        if ('/' !== $file[0]) {
            //index.css => css/home/index.css
            $object = $extension .'/'. $className .'/' . $file;
        } else {
            // /css/main.css 或者 /main.css => css/main.css
            $object = substr($file, 1);
 
            //若object是 main.css ,则自动加上 扩展名目录 => css/main.css
            if (0 !== strncasecmp($extension, $object, strlen($extension))) {
                $object = $extension . '/' . $object;
            }
        }
        //资源真实路径
        $filepath = WEBROOT.'www/'.$object;
 
        //替换压缩版本,这部分逻辑与文件压缩逻辑对应
        if (in_array($extension, array('css', 'js'))) {
            if(!str_start_with($object, 'min/') && file_exists(APPPATH.'libraries/ResMinifier.php')) {
                require_once APPPATH.'libraries/ResMinifier.php';
                $resminifier = new ResMinifier();
                //获取存放资源版本的文件的数组变量
                $resState = $resminifier->getResState();
                //计算得到当前文件版本号
                $state = $resminifier->_getResStateVersion($filepath);
                //判断该版本号是否存在
                if (isset($resState[$object])) {
                    //判断是否是.min.css或.min.js结尾
                    if (str_end_with($object, '.min.'.$extension)) {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension) - 4) . $state . '.' . $extension;
                    } else {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = 'min/'.substr($object, 0, strlen($object) - strlen($extension)) . $state . '.' . $extension;
                    }
                    //判断min的路径是否存在在$resState里面
                     if (isset($resState[$minObject])) {
                        $object = $minObject;
                        $query = '';
                     }
                }
 
            }
 
            $file = RES_BASE_URL . $object;
        }
 
        return ($query == null) ? $file : ($file .'?'. $query);
 
    }
 
    /**
     * 判断 subject 是否以 search开头, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_start_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len1 < $len2) return false;
        if ($ignore_case) {
            return 0 === strncmp($subject, $search, $len2);
        } else {
            return 0 === strncasecmp($subject, $search, $len2);
        }
    }
 
    /**
     * 判断 subject 是否以 search结尾, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_end_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len2 > $len1) return false;
        if ($ignore_case) {
            return 0 === strcmp(substr($subject, $len1 - $len2), $search);
        } else {
            return 0 === strcasecmp(substr($subject, $len1 - $len2), $search);
        }
    }
 
点击打开

$resState.php(里面包车型地铁代码是自动生成的)

XHTML

<?php $resState = array( 'css/home/index.css' => 'gwy933', 'js/echarts-all.min.js' => 'wqrf1c', 'js/home/index.js' => 's2z6f5', 'js/icon.js' => 'pgcyih', 'js/icon_home.js' => 'zhl9iu', 'js/ion.rangeSlider.min.js' => 'akq381', 'js/jquery-ui-autocomplete.js' => '8nzacv', 'js/jquery-ui.min.js' => 'i6tw8z', 'js/jquery.all.min.js' => 'd2w76v', 'js/jquery.city.js' => 'toxdrf', 'js/jquery.easydropdown.min.js' => '2ni3i0', 'js/jquery.matrix.js' => '3vrqkk', 'js/jquery.mobile.all.min.js' => 'ernu7r', 'js/jquery.qrcode.min.js' => 'yuhnsj', 'js/jquery.tinyscrollbar.min.js' => 'oakk3c', 'js/mobiscroll.custom.min.js' => 'kn8h2e', 'js/store.min.js' => 'n50jwr', 'js/swiper.animate1.0.2.min.js' => 'mm27zc', 'js/swiper.min.js' => 'jicwhh', 'min/css/home/index.6a4e83eb.css' => '', 'min/css/home/index.gwy933.css' => '', 'min/css/home/index.puzbnf.css' => '', 'min/css/home/index.thv8x7.css' => '', 'min/js/echarts-all.76025ee0.js' => '', 'min/js/echarts-all.wqrf1c.js' => '', 'min/js/home/index.65363d41.js' => '', 'min/js/home/index.s2z6f5.js' => '', 'min/js/icon.5bbd4db9.js' => '', 'min/js/icon.pgcyih.js' => '', 'min/js/icon_home.7fe74076.js' => '', 'min/js/icon_home.zhl9iu.js' => '', 'min/js/ion.rangeSlider.261d8ed1.js' => '', 'min/js/ion.rangeSlider.akq381.js' => '', 'min/js/jquery-ui-autocomplete.1f3bb62f.js' => '', 'min/js/jquery-ui-autocomplete.8nzacv.js' => '', 'min/js/jquery-ui.418e9683.js' => '', 'min/js/jquery-ui.i6tw8z.js' => '', 'min/js/jquery.all.2f248267.js' => '', 'min/js/jquery.all.d2w76v.js' => '', 'min/js/jquery.city.6b036feb.js' => '', 'min/js/jquery.city.toxdrf.js' => '', 'min/js/jquery.easydropdown.2ni3i0.js' => '', 'min/js/jquery.easydropdown.98fa138.js' => '', 'min/js/jquery.matrix.3vrqkk.js' => '', 'min/js/jquery.matrix.dfe2a44.js' => '', 'min/js/jquery.mobile.all.3539ebb7.js' => '', 'min/js/jquery.mobile.all.ernu7r.js' => '', 'min/js/jquery.qrcode.7d9738b3.js' => '', 'min/js/jquery.qrcode.yuhnsj.js' => '', 'min/js/jquery.tinyscrollbar.578e4cb8.js' => '', 'min/js/jquery.tinyscrollbar.oakk3c.js' => '', 'min/js/mobiscroll.custom.4a684f66.js' => '', 'min/js/mobiscroll.custom.kn8h2e.js' => '', 'min/js/store.536545cb.js' => '', 'min/js/store.n50jwr.js' => '', 'min/js/swiper.4650ad75.js' => '', 'min/js/swiper.animate1.0.2.517f82e8.js' => '', 'min/js/swiper.animate1.0.2.mm27zc.js' => '', 'min/js/swiper.jicwhh.js' => '', ); 点击张开

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<?php
 
$resState = array(
     'css/home/index.css' => 'gwy933',
     'js/echarts-all.min.js' => 'wqrf1c',
     'js/home/index.js' => 's2z6f5',
     'js/icon.js' => 'pgcyih',
     'js/icon_home.js' => 'zhl9iu',
     'js/ion.rangeSlider.min.js' => 'akq381',
     'js/jquery-ui-autocomplete.js' => '8nzacv',
     'js/jquery-ui.min.js' => 'i6tw8z',
     'js/jquery.all.min.js' => 'd2w76v',
     'js/jquery.city.js' => 'toxdrf',
     'js/jquery.easydropdown.min.js' => '2ni3i0',
     'js/jquery.matrix.js' => '3vrqkk',
     'js/jquery.mobile.all.min.js' => 'ernu7r',
     'js/jquery.qrcode.min.js' => 'yuhnsj',
     'js/jquery.tinyscrollbar.min.js' => 'oakk3c',
     'js/mobiscroll.custom.min.js' => 'kn8h2e',
     'js/store.min.js' => 'n50jwr',
     'js/swiper.animate1.0.2.min.js' => 'mm27zc',
     'js/swiper.min.js' => 'jicwhh',
     'min/css/home/index.6a4e83eb.css' => '',
     'min/css/home/index.gwy933.css' => '',
     'min/css/home/index.puzbnf.css' => '',
     'min/css/home/index.thv8x7.css' => '',
     'min/js/echarts-all.76025ee0.js' => '',
     'min/js/echarts-all.wqrf1c.js' => '',
     'min/js/home/index.65363d41.js' => '',
     'min/js/home/index.s2z6f5.js' => '',
     'min/js/icon.5bbd4db9.js' => '',
     'min/js/icon.pgcyih.js' => '',
     'min/js/icon_home.7fe74076.js' => '',
     'min/js/icon_home.zhl9iu.js' => '',
     'min/js/ion.rangeSlider.261d8ed1.js' => '',
     'min/js/ion.rangeSlider.akq381.js' => '',
     'min/js/jquery-ui-autocomplete.1f3bb62f.js' => '',
     'min/js/jquery-ui-autocomplete.8nzacv.js' => '',
     'min/js/jquery-ui.418e9683.js' => '',
     'min/js/jquery-ui.i6tw8z.js' => '',
     'min/js/jquery.all.2f248267.js' => '',
     'min/js/jquery.all.d2w76v.js' => '',
     'min/js/jquery.city.6b036feb.js' => '',
     'min/js/jquery.city.toxdrf.js' => '',
     'min/js/jquery.easydropdown.2ni3i0.js' => '',
     'min/js/jquery.easydropdown.98fa138.js' => '',
     'min/js/jquery.matrix.3vrqkk.js' => '',
     'min/js/jquery.matrix.dfe2a44.js' => '',
     'min/js/jquery.mobile.all.3539ebb7.js' => '',
     'min/js/jquery.mobile.all.ernu7r.js' => '',
     'min/js/jquery.qrcode.7d9738b3.js' => '',
     'min/js/jquery.qrcode.yuhnsj.js' => '',
     'min/js/jquery.tinyscrollbar.578e4cb8.js' => '',
     'min/js/jquery.tinyscrollbar.oakk3c.js' => '',
     'min/js/mobiscroll.custom.4a684f66.js' => '',
     'min/js/mobiscroll.custom.kn8h2e.js' => '',
     'min/js/store.536545cb.js' => '',
     'min/js/store.n50jwr.js' => '',
     'min/js/swiper.4650ad75.js' => '',
     'min/js/swiper.animate1.0.2.517f82e8.js' => '',
     'min/js/swiper.animate1.0.2.mm27zc.js' => '',
     'min/js/swiper.jicwhh.js' => '',
);
 
点击打开

 

另外附上JShrink这些PHP类的链接给大家下载 

借使我们依旧认为非常不够OK的话,小编一向将以此试验项目打包供大家下载下来学习和询问:

四、结语

终极笔者来享受大家线上体系的切实落到实处方案:

我们的体系分线上景况、开辟碰着和测量检验遇到,在开荒和测量检验意况中,大家每壹回采访都会调用压缩文件的接口,然后再对转移的能源文件的尺寸是要做判定的,假诺缩减后文件过小,将要求将该财富文件的代码合併到任何能源文件里去,以此降低不要求的HTTP央浼(因为文件太小,财富的下载时间远小于HTTP诉求响应所花费的岁月);另多少个是图形的处理,全体图片都要由此压缩本领通过(举例在:  那个网址去减弱图片),在PC端,要是是小Logo的话,使用图片合併的措施举办优化,详细情况可参照本身的那篇博文:http://www.cnblogs.com/it-cen/p/4618954.html    而在wap端的图形管理利用的是base64编码情势来管理图片,实际情况能够参照自个儿的那篇博文:  ,当页面输出时,会动用redis来缓存页面(为何用内部存款和储蓄器来缓存实际不是运用页面缓存,那个现在再享受给我们)。如果是线上境况,每发一遍版本,才会调用一下能源文件收缩这么些接口,而且线上的静态财富(css、js、图片)是存放在在Ali云的OSS里的,与大家的应用服务器是分别的。那是我们线上项目标一部分优消除决方案,当然了,还会有更加多优化工夫,笔者会在后头各类计算和享受出去,方便大家共同上学和交换。

本次博文就享受到此,多谢观看此博文的朋友们。

1 赞 1 收藏 评论

图片 7

文本上传例子

 代码如下

<?php
header('content-type:text/html;charset=utf-8');
require('uploadFile.php');

if(isset($_POST['submit'])){
$uploads = $_FILES['file'];
$num_file = count($uploads['name']);

$up = new UploadFile($uploads,'uploads',1024);
$num = $up->upload();

if($num == $num_file ){
echo '全体文书上传成功';
exit;
}else{
echo $num,'个文件上传成功<br/>';
echo $up->showErrorInfo();
exit;
}
}

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ";
<html xmlns=" 1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文书档案</title>
</head>

<body>
<form action="uup.php" method="post" enctype="multipart/form-data">
<p><input name="file[]" type="file" /></p>
<p><input name="file[]" type="file" /></p>
<p><input name="file[]" type="file" /></p>
<p><input name="file[]" type="file" /></p>
<input name="submit" type="submit" />
</form>
</body>
</html>

文件上传类代码

 代码如下

<?php
/*------------*/
class UploadFile
{
var $user_post_file  = array();
var $save_file_path  = '';
var $max_file_size   = '';
var $allow_type      = array('gif','jpg','png','zip','rar','txt','doc','pdf');
var $final_file_path = '';
var $save_info       = array();
var $error_info      = array();

/**
*构造函数,用于早先化消息。
*
*@param Array $file
*@param String $path
*@param Integer $size
*@param Array $type
*/
function __construct($file,$path,$size = 2097152,$type='')
{
$this->user_post_file   = $file;
$this->save_file_path   = $path;
$this->max_file_size    = $size;
if(!$type=''){
$this->allow_type[] = $type;
}
}

/**
*
*
*@access public
*@return int
*/
function upload()
{
for($i=0;$i<count($this->user_post_file['name']);$i++)
{
if($this->user_post_file['error'][$i] == 0){//上传文件状态经常
//获取当前文件名,临时文件名,大小,类型,扩张名
$name     = $this->user_post_file['name'][$i];
$tmp_name = $this->user_post_file['tmp_name'][$i];
$size     = $this->user_post_file['size'][$i];
$type     = $this->user_post_file['type'][$i];
$ext_name = $this->getExtName($name);

//文件大小
if(!$this->checkSize($size)){
$this->error_info[] = '您上传的文书:'.$name.'太大';
continue;
}
//扩展名
if(!$this->checkType($ext_name)){
$this->error_info[] = '您上传的文件:'.$name.'不合规';
continue;
}
//违法上传
if(!is_uploaded_file($tmp_name)){
$this->error_info[] = '您上传的文件:'.$name.'属于违规提交';
continue;
}

//
$basename = $this->getBaseName($name,".".$ext_name);
$final_filename = $basename.'-'.time().'-'.rand(1,10000).'.'.$ext_name;
$this->final_file_path = $this->save_file_path.'/'.$final_filename;

if(!move_uploaded_file($tmp_name,$this->final_file_path)){
$this->error_info = $this->user_post_file['error'][$i];
continue;
}

//
$this->save_info[] = array(
"name" => $name,
"ext_name" => $ext_name,
          "type" => $type,
                            "size" => $size,
"final_filename" => $final_filename,
                            "path" => $this->final_file_path
);
}
}

return count($this->save_info);
}

/*
 *检查客户上传文件的轻重时候合法
 *
 *@param Integer $size
 *@access private
 *@return boolean
 */
function checkSize($size)
{
if($size > $this->max_file_size){
return FALSE;
}

return TRUE;
}

/*
 *检查客户上传文件的花色是还是不是合法
 *
 *@access private
 *@return boolean
 */
function checkType($extension)
{
foreach($this->allow_type as $type){
if(strcasecmp($extension,$type) == 0){
return TRUE;
}
}

return FALSE;
}

/*
 *获取文件的恢弘名
 *
 *@param string $filename
 *@access private
 *@return string
 */
function getExtName($filename)
{
$p = pathinfo($filename);

return $p['extension'];
}

/*
 *猎取文件名(不包罗扩展名)
 *
 *@param string $filename
 *@param string $type
 *@access private
 *@return boolean
 */
function getBaseName($filename,$ext_name)
{
$basename = basename($filename,$ext_name);

return $basename;
}

/*
 *
 *
 *
 */
function showErrorInfo()
{
if(count($this->error_info) != 0){
//echo 'error...<br/>';
foreach($this->error_info as $k=>$v){
echo ($k+1),':',$v,'<br/>';
}
}
}

function getSaveInfo()
{
return $this->save_info;
}
}

//$upload = new UploadFile('','');
//$upload = new UploadFile();
//$upload->showErrorInfo();

?>

本文由网上正规真人赌钱网站发布于前端科技,转载请注明出处:原作出处

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