phpzip系统压缩类

<?php class PHPZip { Private $StrPath = ""; Private $datasec = array(); Private $ctrl_dir = array(); Private $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; Private $old_offset = 0; //压缩后下载 function DownLoad($curdir, $zipfilename, $out) { $zipfilename = StrToLower($zipfilename); $curdir = Str_iReplace(basename($curdir), "", $curdir); chdir($curdir . $this->StrPath); header('Content-Encoding: none'); header('Content-Type: application/zip'); header('Content-Disposition: attachment ; filename=' . Str_Replace(".zip", "", basename($zipfilename)) . '.zip'); header('Pragma: no-cache'); header('Expires: 0'); print($out); } //压缩后保存在服务器,默认在/@Upload下 function SaveFile($curdir, $zipfilename, $out) { $curdir = Str_iReplace(basename($curdir), "", $curdir); chdir($curdir . $this->StrPath); $fp = fopen($zipfilename, "wb"); fwrite($fp, $out, strlen($out)); fclose($fp); } //函数用途:压缩文件夹,递归逐层进行 //参数详解:$dir需要压缩的目录,$zipfilename压缩后的文件名及存放路径,$Todo处理方式1提供下载2保存文件在服务器 function ZipDir($dir, $zipfilename, $Todo) { IF (!@function_exists('gzcompress')) { Return 0; } @set_time_limit("0"); $this->openFile($dir, $zipfilename); $out = $this->filezip(); Switch ($Todo) { Case "1": $this->DownLoad(__FILE__, $zipfilename, $out); Break; Case "2": $this->SaveFile(__FILE__, $zipfilename, $out); Break; } } //函数用途:压缩文件,可以是单个也可以是数组的多个 //参数详解:$file需要压缩的文件(可为数组),$zipfilename压缩后的文件名及存放路径,$Todo处理方式1提供下载2保存文件在服务器 function ZipFile($file, $zipfilename, $Todo) { IF (!@function_exists('gzcompress')) { Return 0; } IF (is_array($file)) { Foreach ($file as $filename) { IF (is_file($filename)) { $fd = fopen($filename, "rb"); $content = @fread($fd, filesize($filename)); fclose($fd); $filename = basename($filename); $this->addFile($content, $filename); } } } Else { IF (is_file($file)) { $fd = fopen($file, "rb"); $content = @fread($fd, filesize($file)); fclose($fd); $file = basename($file); $this->addFile($content, $file); } } $out = $this->filezip(); Switch ($Todo) { Case "1": $this->DownLoad(__FILE__, $zipfilename, $out); Break; Case "2": $this->SaveFile(__FILE__, $zipfilename, $out); Break; } } //递归取得下层文件夹下的文件 function openFile($path, $zipName) { $temp_path = $path; $temp_zip_path = $zipName; IF ($handle = @opendir($path)) { While (false !== ($file = readdir($handle))) { IF ($file != '.' and $file != '..') { IF (preg_match('/\./', $file . @basename())) { $fd = fopen($path . '/' . $file, "r"); $fileValue = @fread($fd, 1024000); fclose($fd); $this->addFile($fileValue, $path . '/' . $file); } Else { $this->openFile($path . '/' . $file, $zipName . '/' . $file); } } } $zipName = $temp_zip_path; $path = $temp_path; closedir($handle); } } function addFile($data, $name, $time = 0) { $name = str_replace('\\', '/', $name); $name = str_replace('./', '', 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"; $fr.="\x00\x00"; $fr.="\x08\x00"; $fr.=$hexdtime; $unc_len = strlen($data); $crc = crc32($data); $zdata = gzcompress($data); $c_len = strlen($zdata); $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); $fr.=pack('V', $crc); $fr.=pack('V', $c_len); $fr.=pack('V', $unc_len); $fr.=pack('v', strlen($name)); $fr.=pack('v', 0); $fr.=$name; $fr.=$zdata; $fr.=pack('V', $crc); $fr.=pack('V', $c_len); $fr.=pack('V', $unc_len); $this->datasec[] = $fr; $new_offset = strlen(implode('', $this->datasec)); $cdrec = "\x50\x4b\x01\x02"; $cdrec.="\x00\x00"; $cdrec.="\x14\x00"; $cdrec.="\x00\x00"; $cdrec.="\x08\x00"; $cdrec.=$hexdtime; $cdrec.=pack('V', $crc); $cdrec.=pack('V', $c_len); $cdrec.=pack('V', $unc_len); $cdrec.=pack('v', strlen($name)); $cdrec.=pack('v', 0); $cdrec.=pack('v', 0); $cdrec.=pack('v', 0); $cdrec.=pack('v', 0); $cdrec.=pack('V', 32); $cdrec.=pack('V', $this->old_offset); $this->old_offset = $new_offset; $cdrec.=$name; $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)) . pack('v', sizeof($this->ctrl_dir)) . pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00"; } function unix2DosTime($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; $timearray['seconds'] = 0; } Return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1); } /* 解压缩部分 用途:解压缩文件 参数:$zn需要解压缩的zip文件及路径,$to解压缩的目的地 */ function Unzip_File($zn, $to, $index = Array(-1)) { error_reporting(0); $ok = 0; $zip = @fopen($zn, 'rb'); IF (!$zip) { Return(-1); } $cdir = $this->ReadCentralDir($zip, $zn); $pos_entry = $cdir['offset']; IF (!is_array($index)) { $index = array($index); } For ($i = 0; $index[$i]; $i++) { IF (intval($index[$i]) != $index[$i] || $index[$i] > $cdir['entries']) { Return(-1); } } For ($i = 0; $i < $cdir['entries']; $i++) { @fseek($zip, $pos_entry); $header = $this->ReadCentralFileHeaders($zip); $header['index'] = $i; $pos_entry = ftell($zip); @rewind($zip); fseek($zip, $header['offset']);