php打包文件夹代码实现

有时候你想要打包一个网站的shell，但是没有权限执行tar等命令打包网站的代码时，可以使用php编写打包程序，打包网站的代码。

如果网站自带有ZipArchive类，那么就容易编写了，只要调用这个类，就可以直接打包文件夹了。demo如下

<?phpfunction addFileToZip($path,$zip){    $handler = opendir($path);    while(($filename=readdir($handler))!==false) {        if($filename != "." && $filename != "..") {            if(is_dir($path."/".$filename)) {                addFileToZip($path."/".$filename, $zip);            }else {                $zip->addFile($path."/".$filename);            }        }    }    @closedir($path);}$zip=new ZipArchive();$zipname = $_GET['name'];$path = $_GET['path'];if (isset($zipname) && isset($path)) {    if($zip->open($zipname.".zip", ZipArchive::OVERWRITE) === TRUE) {         addFileToZip($path, $zip); //调用方法，对要打包的根目录进行操作，并将ZipArchive的对象传递给方法        $zip->close(); //关闭处理的zip文件    } }else {    print('请输入文件名和文件夹路径');}?>

但是php安装时候并不会直接安装zip扩展，需要手动编译安装，所以如果没有ZipArchive类，可以自己用php自带函数实现zip的压缩功能。demo如下

<?phperror_reporting(0);class PHPZip{    var $dirInfo = array("0","0");    var $datasec = array();    var $ctrl_dir = array();    var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";    var $old_offset   = 0;    function createZip($dir, $zipfilename){        if (@function_exists('gzcompress')){            @set_time_limit("0");            if (is_array($dir)){                $fd = fopen ($dir, "r");                $fileValue = fread ($fd, filesize ($filename));                fclose ($fd);                if (is_array($dir)) $filename = basename($dir);                $this -> addFile($fileValue, "$filename");            }else{                $this->dirTree($dir,$dir);            }            $out = $this -> filezip();            $fp = fopen($zipfilename, "w");            fwrite($fp, $out, strlen($out));            fclose($fp);            $filesize = filesize($zipfilename);            if ($filesize < 104857600) {                echo "create zip success!";            } else {                echo "create zip error!";            }        }     }    //get dir tree..    function dirTree($directory,$rootDir){        $fileDir = $rootDir;        $myDir = dir($directory);        while($file=$myDir->read()){            if(is_dir("$directory/$file") and $file!="." and $file!=".."){                $this->dirInfo[0]++;                $rootDir ="$fileDir$file/";                $this -> addFile('', "$rootDir");                //go on n's folders                $this->dirTree("$directory/$file",$rootDir);            }else{                if($file!="." and $file!=".."){                    $this->dirInfo[1]++;                    $fileValue = file_get_contents("$directory/$file");                    $this -> addFile($fileValue, "$fileDir$file");                }            }        }        $myDir->close();    }    function unix2DosTime($unixtime = 0) {        $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);        if ($timearray['year'] < 1980) {             $timearray['year'] = 1980;             $timearray['mon'] = 1;             $timearray['mday'] = 1;             $timearray['hours'] = 0;             $timearray['minutes'] = 0;             $timearray['seconds'] = 0;        } // end if        return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |                ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);    }     function addFile($data, $name, $time = 0){        $name = str_replace('\\', '/', $name);        $dtime = dechex($this->unix2DosTime($time));        $hexdtime = '\x' . $dtime[6] . $dtime[7]                  . '\x' . $dtime[4] . $dtime[5]                  . '\x' . $dtime[2] . $dtime[3]                  . '\x' . $dtime[0] . $dtime[1];        eval('$hexdtime = "' . $hexdtime . '";');        $fr = "\x50\x4b\x03\x04";        $fr .= "\x14\x00";            // ver needed to extract        $fr .= "\x00\x00";            // gen purpose bit flag        $fr .= "\x08\x00";            // compression method        $fr .= $hexdtime;             // last mod time and date        // "local file header" segment        $unc_len = strlen($data);        $crc = crc32($data);        $zdata = gzcompress($data);        $c_len = strlen($zdata);        $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug        $fr .= pack('V', $crc);             // crc32        $fr .= pack('V', $c_len);           // compressed filesize        $fr .= pack('V', $unc_len);         // uncompressed filesize        $fr .= pack('v', strlen($name));    // length of filename        $fr .= pack('v', 0);                // extra field length        $fr .= $name;        // "file data" segment        $fr .= $zdata;        // "data descriptor" segment (optional but necessary if archive is not        // served as file)        $fr .= pack('V', $crc);                 // crc32        $fr .= pack('V', $c_len);               // compressed filesize        $fr .= pack('V', $unc_len);             // uncompressed filesize        // add this entry to array        $this -> datasec[] = $fr;        $new_offset        = strlen(implode('', $this->datasec));        // now add to central directory record        $cdrec = "\x50\x4b\x01\x02";        $cdrec .= "\x00\x00";                // version made by        $cdrec .= "\x14\x00";                // version needed to extract        $cdrec .= "\x00\x00";                // gen purpose bit flag        $cdrec .= "\x08\x00";                // compression method        $cdrec .= $hexdtime;                 // last mod time & date        $cdrec .= pack('V', $crc);           // crc32        $cdrec .= pack('V', $c_len);         // compressed filesize        $cdrec .= pack('V', $unc_len);       // uncompressed filesize        $cdrec .= pack('v', strlen($name) ); // length of filename        $cdrec .= pack('v', 0 );             // extra field length        $cdrec .= pack('v', 0 );             // file comment length        $cdrec .= pack('v', 0 );             // disk number start        $cdrec .= pack('v', 0 );             // internal file attributes        $cdrec .= pack('V', 32 );            // external file attributes - 'archive' bit set        $cdrec .= pack('V', $this -> old_offset ); // relative offset of local header        $this -> old_offset = $new_offset;        $cdrec .= $name;        // optional extra field, file comment goes here        // save to central directory        $this -> ctrl_dir[] = $cdrec;    }    function filezip(){        $data = implode('', $this -> datasec);        $ctrldir = implode('', $this -> ctrl_dir);        return            $data .            $ctrldir .            $this -> eof_ctrl_dir .            pack('v', sizeof($this -> ctrl_dir)) .  // total # of entries "on this disk"            pack('v', sizeof($this -> ctrl_dir)) .  // total # of entries overall            pack('V', strlen($ctrldir)) .           // size of central dir            pack('V', strlen($data)) .              // offset to start of central dir            "\x00\x00";                             // .zip file comment length    }}$zip = new PHPZip(); $path = $_GET['path'];$filename = $_GET['filename'];if (isset($path)&&isset($filename)) {    $zip -> createZip($path, $filename);} else {    echo "please input correct path and filename, like <a href=#>http://example.com?path=/home&filename=home.zip</a>";}?>

已把文件上传到github，下载地址 https://github.com/he1m4n6a/toolkit/blob/master/zip.php