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HomeBackend DevelopmentPHP TutorialPHP解压缩zip文件代码实现

在具体网站编程项目中,有时候要使用PHP脚本代码的方式来控制压缩和解压zip文件。下面是一个简单的php的zip解压缩实现代码,需要的朋友可以参考下仔细的研究了一下。

PHP安装后自带 zip 扩展 ,首先我们需要开启它,把 php.ini 中的 extension=php_zip.dll 前面的分号去掉就,接着重启web服务器即可。

php的zip解压缩实现代码如下:

<?php</p><p>//需开启配置 php_zip.dll</p>//phpinfo();<br /><p>header("Content-type:text/html;charset=utf-8");</p><p>function get_zip_originalsize($filename, $path) {</p> //先判断待解压的文件是否存在<br /> if(!file_exists($filename)){<br />  die("文件 $filename 不存在!");<br /> } <br /> $starttime = explode(' ',microtime()); //解压开始的时间<br /><br /> //将文件名和路径转成windows系统默认的gb2312编码,否则将会读取不到<br /> $filename = iconv("utf-8","gb2312",$filename);<br /> $path = iconv("utf-8","gb2312",$path);<br /> //打开压缩包<br /> $resource = zip_open($filename);<br /> $i = 1;<br /> //遍历读取压缩包里面的一个个文件<br /> while ($dir_resource = zip_read($resource)) {<br />  //如果能打开则继续<br />  if (zip_entry_open($resource,$dir_resource)) {<br />   //获取当前项目的名称,即压缩包里面当前对应的文件名<br />   $file_name = $path.zip_entry_name($dir_resource);<br />   //以最后一个“/”分割,再用字符串截取出路径部分<br />   $file_path = substr($file_name,0,strrpos($file_name, "/"));<br />   //如果路径不存在,则创建一个目录,true表示可以创建多级目录<br />   if(!is_dir($file_path)){<br />    mkdir($file_path,0777,true);<br />   }<br />   //如果不是目录,则写入文件<br />   if(!is_dir($file_name)){<br />    //读取这个文件<br />    $file_size = zip_entry_filesize($dir_resource);<br />    //最大读取6M,如果文件过大,跳过解压,继续下一个<br />    if($file_size<(1024*1024*6)){<br />     $file_content = zip_entry_read($dir_resource,$file_size);<br />     file_put_contents($file_name,$file_content);<br />    }else{<br />     echo "<p> ".$i++." 此文件已被跳过,原因:文件过大, -> ".iconv("gb2312","utf-8",$file_name)." </p>";<br />    }<br />   }<br />   //关闭当前<br />   zip_entry_close($dir_resource);<br />  }<br /> }<br /> //关闭压缩包<br /> zip_close($resource); <br /> $endtime = explode(' ',microtime()); //解压结束的时间<br /> $thistime = $endtime[0]+$endtime[1]-($starttime[0]+$starttime[1]);<br /> $thistime = round($thistime,3); //保留3为小数<br /> echo "<p>解压完毕!,本次解压花费:$thistime 秒。</p>";<br /><p>}</p><p>$size = get_zip_originalsize('test.zip','./');</p><p>?></p>

测试解压了一个300多KB的小文件,花了0.115秒,测试解压了一个30多MB的(网页文件,小文件比较多),花了20多秒。


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