一个PHP的ZIP压缩类分享_php实例

功能：将文件压缩成zip，或者rar的压缩包。后缀名可以自定义。

使用方法：首先实例化，然后传参。两个参数。第一个关于你文件地址的一个Array。第二个是要你要保存的压缩包文件的绝对地址。

使用例子：

        $zipfiles =array("/root/pooy/test1.txt","/root/pooy/test2.txt");<BR>        $z = new PHPZip();<BR>        //$randomstr = random(8);<BR>        $zipfile = TEMP."/photocome_".$groupid.".zip";<BR>        $z->Zip($zipfiles, $zipfile); //添加文件列表<BR>

PHP的ZIP压缩类如下：

<?php<BR># <BR># PHPZip v1.2 by Sext ([email protected]) 2002-11-18<BR>#     (Changed: 2003-03-01)<BR># <BR># Makes zip archive<BR>#<BR># Based on "Zip file creation class", uses zLib<BR>#<BR>#<BR>class PHPZip<BR>{<BR>    function Zip($dir, $zipfilename)<BR>    {<BR>        if (@function_exists('gzcompress'))<BR>        {    <BR>            $curdir = getcwd();<BR>            if (is_array($dir)) <BR>            {<BR>                    $filelist = $dir;<BR>            }<BR>            else<BR>            {<BR>                $filelist = $this -> GetFileList($dir);<BR>            }<br><br>            if ((!empty($dir))&&(!is_array($dir))&&(file_exists($dir))) chdir($dir);<BR>            else chdir($curdir);<br><br>            if (count($filelist)>0)<BR>            {<BR>                foreach($filelist as $filename)<BR>                {<BR>                    if (is_file($filename))<BR>                    {<BR>                        $fd = fopen ($filename, "r");<BR>                        $content = fread ($fd, filesize ($filename));<BR>                        fclose ($fd);<br><br>                        if (is_array($dir)) $filename = basename($filename);<BR>                        $this -> addFile($content, $filename);<BR>                    }<BR>                }<BR>                $out = $this -> fil<p>+本文来源gao!%daima.com搞$代*!码9网(</p><strong>搞gaodaima代码</strong>e();<br><br>                chdir($curdir);<BR>                $fp = fopen($zipfilename, "w");<BR>                fwrite($fp, $out, strlen($out));<BR>                fclose($fp);<BR>            }<BR>            return 1;<BR>        } <BR>        else return 0;<BR>    }<br><br>    function GetFileList($dir)<BR>    {<BR>        if (file_exists($dir))<BR>        {<BR>            $args = func_get_args();<BR>            $pref = $args[1];<br><br>            $dh = opendir($dir);<BR>            while($files = readdir($dh))<BR>            {<BR>                if (($files!=".")&&($files!="..")) <BR>                {<BR>                    if (is_dir($dir.$files)) <BR>                    {<BR>                        $curdir = getcwd();<BR>                        chdir($dir.$files);<BR>                        $file = array_merge($file, $this -> GetFileList("", "$pref$files/"));<BR>                        chdir($curdir);<BR>                    }<BR>                    else $file[]=$pref.$files;<BR>                }<BR>            }<BR>            closedir($dh);<BR>        }<BR>        return $file;<BR>    }<br><br>    var $datasec      = array();<BR>    var $ctrl_dir     = array();<BR>    var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";<BR>    var $old_offset   = 0;<br><br>    /**<BR>     * Converts an Unix timestamp to a four byte DOS date and time format (date<BR>     * in high two bytes, time in low two bytes allowing magnitude comparison).<BR>     *<BR>     * @param  integer  the current Unix timestamp<BR>     *<BR>     * @return integer  the current date in a four byte DOS format<BR>     *<BR>     * @access private<BR>     */<BR>    function unix2DosTime($unixtime = 0) {<BR>        $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);<br><br>        if ($timearray['year'] < 1980) {<BR>            $timearray['year']    = 1980;<BR>            $timearray['mon']     = 1;<BR>            $timearray['mday']    = 1;<BR>            $timearray['hours']   = 0;<BR>            $timearray['minutes'] = 0;<BR>            $timearray['seconds'] = 0;<BR>        } // end if<br><br>        return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |<BR>                ($timearray['hours'] << 11) | ($timearray['minutes'] <> 1);<BR>    } // end of the 'unix2DosTime()' method<br><br>    /**<BR>     * Adds "file" to archive<BR>     *<BR>     * @param  string   file contents<BR>     * @param  string   name of the file in the archive (may contains the path)<BR>     * @param  integer  the current timestamp<BR>     *<BR>     * @access public<BR>     */<BR>    function addFile($data, $name, $time = 0)<BR>    {<BR>        $name     = str_replace('\\', '/', $name);<br><br>        $dtime    = dechex($this->unix2DosTime($time));<BR>        $hexdtime = '\x' . $dtime[6] . $dtime[7]<BR>                   Western union point .  '\x' . $dtime[4] . $dtime[5]<BR>                  . '\x' . $dtime[2] . $dtime[3]<BR>                  . '\x' . $dtime[0] . $dtime[1];<BR>        eval('$hexdtime = "' . $hexdtime . '";');<br><br>        $fr   = "\x50\x4b\x03\x04";<BR>        $fr   .= "\x14\x00";            // ver needed to extract<BR>        $fr   .= "\x00\x00";            // gen purpose bit flag<BR>        $fr   .= "\x08\x00";            // compression method<BR>        $fr   .= $hexdtime;             // last mod time and date<br><br>        // "local file header" segment<BR>        $unc_len = strlen($data);<BR>        $crc     = crc32($data);<BR>        $zdata   = gzcompress($data);<BR>        $c_len   = strlen($zdata);<BR>        $zdata   = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug<BR>        $fr      .= pack('V', $crc);             // crc32<BR>        $fr      .= pack('V', $c_len);           // compressed filesize<BR>        $fr      .= pack('V', $unc_len);         // uncompressed filesize<BR>        $fr      .= pack('v', strlen($name));    // length of filename<BR>        $fr      .= pack('v', 0);                // extra field length<BR>        $fr      .= $name;<br><br>        // "file data" segment<BR>        $fr .= $zdata;<br><br>        // "data descriptor" segment (optional but necessary if archive is not<BR>        // served as file)<BR>        $fr .= pack('V', $crc);                 // crc32<BR>        $fr .= pack('V', $c_len);               // compressed filesize<BR>        $fr .= pack('V', $unc_len);             // uncompressed filesize<br><br>        // add this entry to array<BR>        $this -> datasec[] = $fr;<BR>        $new_offset        = strlen(implode('', $this->datasec));<br><br>        // now add to central directory record<BR>        $cdrec = "\x50\x4b\x01\x02";<BR>        $cdrec .= "\x00\x00";                // version made by<BR>        $cdrec .= "\x14\x00";                // version needed to extract<BR>        $cdrec .= "\x00\x00";                // gen purpose bit flag<BR>        $cdrec .= "\x08\x00";                // compression method<BR>        $cdrec .= $hexdtime;                 // last mod time & date<BR>        $cdrec .= pack('V', $crc);           // crc32<BR>        $cdrec .= pack('V', $c_len);         // compressed filesize<BR>        $cdrec .= pack('V', $unc_len);       // uncompressed filesize<BR>        $cdrec .= pack('v', strlen($name) ); // length of filename<BR>        $cdrec .= pack('v', 0 );             // extra field length<BR>        $cdrec .= pack('v', 0 );             // file comment length<BR>        $cdrec .= pack('v', 0 );             // disk number start<BR>        $cdrec .= pack('v', 0 );             // internal file attributes<BR>        $cdrec .= pack('V', 32 );            // external file attributes - 'archive' bit set<br><br>        $cdrec .= pack('V', $this -> old_offset ); // relative offset of local header<BR>        $this -> old_offset = $new_offset;<br><br>        $cdrec .= $name;<br><br>        // optional extra field, file comment goes here<BR>        // save to central directory<BR>        $this -> ctrl_dir[] = $cdrec;<BR>    } // end of the 'addFile()' method<br><br>    /**<BR>     * Dumps out file<BR>     *<BR>     * @return  string  the zipped file<BR>     *<BR>     * @access public<BR>     */<BR>    function file()<BR>    {<BR>        $data    = implode('', $this -> datasec);<BR>        $ctrldir = implode('', $this -> ctrl_dir);<br><br>        return<BR>            $data .<BR>            $ctrldir .<BR>            $this -> eof_ctrl_dir .<BR>            pack('v', sizeof($this -> ctrl_dir)) .  // total # of entries "on this disk"<BR>            pack('v', sizeof($this -> ctrl_dir)) .  // total # of entries overall<BR>            pack('V', strlen($ctrldir)) .           // size of central dir<BR>            pack('V', strlen($data)) .              // offset to start of central dir<BR>            "\x00\x00";                             // .zip file comment length<BR>    } // end of the 'file()' method<br><br>} // end of the 'PHPZip' class<BR>?><BR>

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