压缩与解压Zip(PHPZip类)代码,PHP代码库,德仔网

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【PHP】压缩与解压Zip(PHPZip类)
作者:Dezai.CN / 发布于2013/10/22/ 340
注：修改为可遍历子文件夹（替换遍历方法为visitFile()）；添加GetZipComment()方法；加上用法说明(注释部分)。

	<?php
	 class PHPZip
	 {
	 private $ctrl_dir = array();
	 private $datasec = array();

	
	 /**********************************************************
	 * 压缩部分
	 **********************************************************/
	 // ------------------------------------------------------ //
	 // #遍历指定文件夹
	 //
	 // $archive = new PHPZip();
	 // $filelist = $archive->visitFile(文件夹路径);
	 // print "当前文件夹的文件:\r\n";
	 // foreach($filelist as $file)
	 // printf("%s\r\n", $file);
	 // ------------------------------------------------------ //
	 var $fileList = array();
	 public function visitFile($path)
	 {
	 global $fileList;
	 $path = str_replace("\\", "/", $path);
	 $fdir = dir($path);
	
	 while(($file = $fdir->read()) !== false)
	 {
	 if($file == '.' || $file == '..'){ continue; }
	
	 $pathSub = preg_replace("*/{2,}*", "/", $path."/".$file); // 替换多个反斜杠
	 $fileList[] = is_dir($pathSub) ? $pathSub."/" : $pathSub;
	 if(is_dir($pathSub)){ $this->visitFile($pathSub); }
	 }
	 $fdir->close();
	 return $fileList;
	 }
	
	
	 private 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);
	 }
	
	
	 var $old_offset = 0;
	 private function addFile($data, $filename, $time = 0)
	 {
	 $filename = str_replace('\\', '/', $filename);
	
	 $dtime = dechex($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);
	 $fr .= pack('v', strlen($filename));
	 $fr .= pack('v', 0);
	 $fr .= $filename;
	
	 $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);
	 $cdrec .= pack('v', strlen($filename) );
	 $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 .= $filename;
	 $this->ctrl_dir[] = $cdrec;
	 }
	
	
	 var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
	 private function file()
	 {
	 $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";
	 }
	
	
	 // ------------------------------------------------------ //
	 // #压缩到服务器
	 //
	 // $archive = new PHPZip();
	 // $archive->Zip("需压缩的文件所在目录", "ZIP压缩文件名");
	 // ------------------------------------------------------ //
	 public function Zip($dir, $saveName)
	 {
	 if(@!function_exists('gzcompress')){ return; }
	
	 ob_end_clean();
	 $filelist = $this->visitFile($dir);
	 if(count($filelist) == 0){ return; }
	
	 foreach($filelist as $file)
	 {
	 if(!file_exists($file) || !is_file($file)){ continue; }
	
	 $fd = fopen($file, "rb");
	 $content = @fread($fd, filesize($file));
	 fclose($fd);

	 // 1.删除$dir的字符(./folder/file.txt删除./folder/)
	 // 2.如果存在/就删除(/file.txt删除/)
	 $file = substr($file, strlen($dir));
	 if(substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }
	
	 $this->addFile($content, $file);
	 }
	 $out = $this->file();
	
	 $fp = fopen($saveName, "wb");
	 fwrite($fp, $out, strlen($out));
	 fclose($fp);
	 }
	
	
	 // ------------------------------------------------------ //
	 // #压缩并直接下载
	 //
	 // $archive = new PHPZip();
	 // $archive->ZipAndDownload("需压缩的文件所在目录");
	 // ------------------------------------------------------ //
	 public function ZipAndDownload($dir)
	 {
	 if(@!function_exists('gzcompress')){ return; }
	
	 ob_end_clean();
	 $filelist = $this->visitFile($dir);
	 if(count($filelist) == 0){ return; }
	
	 foreach($filelist as $file)
	 {
	 if(!file_exists($file) || !is_file($file)){ continue; }
	
	 $fd = fopen($file, "rb");
	 $content = @fread($fd, filesize($file));
	 fclose($fd);
	
	 // 1.删除$dir的字符(./folder/file.txt删除./folder/)
	 // 2.如果存在/就删除(/file.txt删除/)
	 $file = substr($file, strlen($dir));
	 if(substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }
	
	 $this->addFile($content, $file);
	 }
	 $out = $this->file();
	
	 @header('Content-Encoding: none');
	 @header('Content-Type: application/zip');
	 @header('Content-Disposition: attachment ; filename=Farticle'.date("YmdHis", time()).'.zip');
	 @header('Pragma: no-cache');
	 @header('Expires: 0');
	 print($out);
	 }
	
	
	
	
	
	 /**********************************************************
	 * 解压部分
	 **********************************************************/
	 // ------------------------------------------------------ //
	 // ReadCentralDir($zip, $zipfile)
	 // $zip是经过@fopen($zipfile, 'rb')打开的
	 // $zipfile是zip文件的路径
	 // ------------------------------------------------------ //
	 private function ReadCentralDir($zip, $zipfile)
	 {
	 $size = filesize($zipfile);
	 $max_size = ($size < 277) ? $size : 277;
	
	 @fseek($zip, $size - $max_size);
	 $pos = ftell($zip);
	 $bytes = 0x00000000;
	
	 while($pos < $size)
	 {
	 $byte = @fread($zip, 1);
	 $bytes = ($bytes << 8) | Ord($byte);
	 $pos++;
	 if($bytes == 0x504b0506){ break; }
	 }
	
	 $data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18));

	 $centd['comment'] = ($data['comment_size'] != 0) ? fread($zip, $data['comment_size']) : ''; // 注释
	 $centd['entries'] = $data['entries'];
	 $centd['disk_entries'] = $data['disk_entries'];
	 $centd['offset'] = $data['offset'];
	 $centd['disk_start'] = $data['disk_start'];
	 $centd['size'] = $data['size'];
	 $centd['disk'] = $data['disk'];
	 return $centd;
	 }
	
	
	 private function ReadCentralFileHeaders($zip)
	 {
	 $binary_data = fread($zip, 46);
	 $header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);

	 $header['filename'] = ($header['filename_len'] != 0) ? fread($zip, $header['filename_len']) : '';
	 $header['extra'] = ($header['extra_len'] != 0) ? fread($zip, $header['extra_len']) : '';
	 $header['comment'] = ($header['comment_len'] != 0) ? fread($zip, $header['comment_len']) : '';

	
	 if($header['mdate'] && $header['mtime'])
	 {
	 $hour = ($header['mtime'] & 0xF800) >> 11;
	 $minute = ($header['mtime'] & 0x07E0) >> 5;
	 $seconde = ($header['mtime'] & 0x001F) * 2;
	 $year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
	 $month = ($header['mdate'] & 0x01E0) >> 5;
	 $day = $header['mdate'] & 0x001F;
	 $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
	 } else {
	 $header['mtime'] = time();
	 }
	 $header['stored_filename'] = $header['filename'];
	 $header['status'] = 'ok';
	 if(substr($header['filename'], -1) == '/'){ $header['external'] = 0x41FF0010; } // 判断是否文件夹
	 return $header;
	 }
	
	
	 private function ReadFileHeader($zip)
	 {
	 $binary_data = fread($zip, 30);
	 $data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
	
	 $header['filename'] = fread($zip, $data['filename_len']);
	 $header['extra'] = ($data['extra_len'] != 0) ? fread($zip, $data['extra_len']) : '';
	 $header['compression'] = $data['compression'];
	 $header['size'] = $data['size'];
	 $header['compressed_size'] = $data['compressed_size'];
	 $header['crc'] = $data['crc'];
	 $header['flag'] = $data['flag'];
	 $header['mdate'] = $data['mdate'];
	 $header['mtime'] = $data['mtime'];
	
	 if($header['mdate'] && $header['mtime']){
	 $hour = ($header['mtime'] & 0xF800) >> 11;
	 $minute = ($header['mtime'] & 0x07E0) >> 5;
	 $seconde = ($header['mtime'] & 0x001F) * 2;
	 $year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
	 $month = ($header['mdate'] & 0x01E0) >> 5;
	 $day = $header['mdate'] & 0x001F;
	 $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
	 }else{
	 $header['mtime'] = time();
	 }
	
	 $header['stored_filename'] = $header['filename'];
	 $header['status'] = "ok";
	 return $header;
	 }
	
	
	 private function ExtractFile($header, $to, $zip)
	 {
	 $header = $this->readfileheader($zip);
	
	 if(substr($to, -1) != "/"){ $to .= "/"; }
	 if(!@is_dir($to)){ @mkdir($to, 0777); }
	
	 $pth = explode("/", dirname($header['filename']));
	 for($i=0; isset($pth[$i]); $i++){
	 if(!$pth[$i]){ continue; }
	 $pthss .= $pth[$i]."/";
	 if(!is_dir($to.$pthss)){ @mkdir($to.$pthss, 0777); }
	 }
	
	 if(!($header['external'] == 0x41FF0010) && !($header['external'] == 16))
	 {
	 if($header['compression'] == 0)
	 {
	 $fp = @fopen($to.$header['filename'], 'wb');
	 if(!$fp){ return(-1); }
	 $size = $header['compressed_size'];
	
	 while($size != 0)
	 {
	 $read_size = ($size < 2048 ? $size : 2048);
	 $buffer = fread($zip, $read_size);
	 $binary_data = pack('a'.$read_size, $buffer);
	 @fwrite($fp, $binary_data, $read_size);
	 $size -= $read_size;
	 }
	 fclose($fp);
	 touch($to.$header['filename'], $header['mtime']);
	
	 }else{
	
	 $fp = @fopen($to.$header['filename'].'.gz', 'wb');
	 if(!$fp){ return(-1); }
	 $binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']), Chr(0x00), time(), Chr(0x00), Chr(3));
	
	 fwrite($fp, $binary_data, 10);
	 $size = $header['compressed_size'];
	
	 while($size != 0)
	 {
	 $read_size = ($size < 1024 ? $size : 1024);
	 $buffer = fread($zip, $read_size);
	 $binary_data = pack('a'.$read_size, $buffer);
	 @fwrite($fp, $binary_data, $read_size);
	 $size -= $read_size;
	 }
	
	 $binary_data = pack('VV', $header['crc'], $header['size']);
	 fwrite($fp, $binary_data, 8);
	 fclose($fp);
	
	 $gzp = @gzopen($to.$header['filename'].'.gz', 'rb') or die("Cette archive est compress!");
	
	 if(!$gzp){ return(-2); }
	 $fp = @fopen($to.$header['filename'], 'wb');
	 if(!$fp){ return(-1); }
	 $size = $header['size'];
	
	 while($size != 0)
	 {
	 $read_size = ($size < 2048 ? $size : 2048);
	 $buffer = gzread($gzp, $read_size);
	 $binary_data = pack('a'.$read_size, $buffer);
	 @fwrite($fp, $binary_data, $read_size);
	 $size -= $read_size;
	 }
	 fclose($fp); gzclose($gzp);
	
	 touch($to.$header['filename'], $header['mtime']);
	 @unlink($to.$header['filename'].'.gz');
	 }
	 }
	 return true;
	 }
	
	
	 // ------------------------------------------------------ //
	 // #解压文件
	 //
	 // $archive = new PHPZip();
	 // $zipfile = "ZIP压缩文件名";
	 // $savepath = "解压缩目录名";
	 // $zipfile = $unzipfile;
	 // $savepath = $unziptarget;
	 // $array = $archive->GetZipInnerFilesInfo($zipfile);
	 // $filecount = 0;
	 // $dircount = 0;
	 // $failfiles = array();
	 // set_time_limit(0); // 修改为不限制超时时间(默认为30秒)
	 //
	 // for($i=0; $i<count($array); $i++) {
	 // if($array[$i][folder] == 0){
	 // if($archive->unZip($zipfile, $savepath, $i) > 0){
	 // $filecount++;
	 // }else{
	 // $failfiles[] = $array[$i][filename];
	 // }
	 // }else{
	 // $dircount++;
	 // }
	 // }
	 // set_time_limit(30);
	 //printf("文件夹:%d&nbsp;&nbsp;&nbsp;&nbsp;解压文件:%d&nbsp;&nbsp;&nbsp;&nbsp;失败:%d\r\n", $dircount, $filecount, count($failfiles));
	 //if(count($failfiles) > 0){
	 // foreach($failfiles as $file){
	 // printf("&middot;%s\r\n", $file);
	 // }
	 //}
	 // ------------------------------------------------------ //
	 public function unZip($zipfile, $to, $index = Array(-1))
	 {
	 $ok = 0;
	 $zip = @fopen($zipfile, 'rb');
	 if(!$zip){ return(-1); }
	
	 $cdir = $this->ReadCentralDir($zip, $zipfile);
	 $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']);
	 if(in_array("-1", $index) || in_array($i, $index))
	 {
	 $stat[$header['filename']] = $this->ExtractFile($header, $to, $zip);
	 }
	 }
	
	 fclose($zip);
	 return $stat;
	 }
	
	
	
	
	
	 /**********************************************************
	 * 其它部分
	 **********************************************************/
	 // ------------------------------------------------------ //
	 // #获取被压缩文件的信息
	 //
	 // $archive = new PHPZip();
	 // $array = $archive->GetZipInnerFilesInfo(ZIP压缩文件名);
	 // for($i=0; $i<count($array); $i++) {
	 // printf("<b>&middot;%s</b>\r\n", $array[$i][filename]);
	 // foreach($array[$i] as $key => $value)
	 // printf("%s => %s\r\n", $key, $value);
	 // print "\r\n------------------------------------\r\n\r\n";
	 // }
	 // ------------------------------------------------------ //
	 public function GetZipInnerFilesInfo($zipfile)
	 {
	 $zip = @fopen($zipfile, 'rb');
	 if(!$zip){ return(0); }
	 $centd = $this->ReadCentralDir($zip, $zipfile);
	
	 @rewind($zip);
	 @fseek($zip, $centd['offset']);
	 $ret = array();

	 for($i=0; $i<$centd['entries']; $i++)
	 {
	 $header = $this->ReadCentralFileHeaders($zip);
	 $header['index'] = $i;
	 $info = array(
	 'filename' => $header['filename'], // 文件名
	 'stored_filename' => $header['stored_filename'], // 压缩后文件名
	 'size' => $header['size'], // 大小
	 'compressed_size' => $header['compressed_size'], // 压缩后大小
	 'crc' => strtoupper(dechex($header['crc'])), // CRC32
	 'mtime' => date("Y-m-d H:i:s",$header['mtime']), // 文件修改时间
	 'comment' => $header['comment'], // 注释
	 'folder' => ($header['external'] == 0x41FF0010 || $header['external'] == 16) ? 1 : 0, // 是否为文件夹
	 'index' => $header['index'], // 文件索引
	 'status' => $header['status'] // 状态
	 );
	 $ret[] = $info;
	 unset($header);
	 }
	 fclose($zip);
	 return $ret;
	 }
	
	
	 // ------------------------------------------------------ //
	 // #获取压缩文件的注释
	 //
	 // $archive = new PHPZip();
	 // echo $archive->GetZipComment(ZIP压缩文件名);
	 // ------------------------------------------------------ //
	 public function GetZipComment($zipfile)
	 {
	 $zip = @fopen($zipfile, 'rb');
	 if(!$zip){ return(0); }
	 $centd = $this->ReadCentralDir($zip, $zipfile);
	 fclose($zip);
	 return $centd[comment];
	 }
	 }
	?>

	

	<form method="post">
	 压缩到服务器:
	 ------------------
	 压缩目录:　　　　　<input name="zipdir" type="text" id="zipdir" />(例如./folder)
	 另存为路径和文件名:<input name="savename" type="text" id="savename" />(例如./folder/file.zip)(需要填写扩展名)
	 <input name="zip" type="submit" id="zip" value="压缩" />
	 
	
	 压缩并下载
	 ------------------
	 文件所在目录:<input name="zipdowndir" type="text" id="zipdowndir" />(例如./folder)
	 <input name="zipdown" type="submit" id="zipdown" value="压缩并下载" />
	 
	
	 在线解压zip
	 ------------------
	 文件:　<input name="unzipfile" type="text" id="unzipfile" />(例如./folder/file.zip)
	 解压到:<input name="unziptarget" type="text" id="unziptarget" />(例如./folder)
	 <input name="unzip" type="submit" id="unzip" value="解压" />
	 
	
	 读取压缩文件内部文件信息和注释
	 ------------------
	 文件:<input name="readfile" type="text" id="readfile" />(例如./folder/file.zip)
	 <input name="readfileinfo" type="submit" id="readfileinfo" value="读取内部文件信息" />
	 <input name="readcomment" type="submit" id="readcomment" value="读取注释" />
	</form>
	<?
	 echo "\r\n";
	 echo "--------------------------\r\n";
	 echo "显示信息:\r\n";
	 echo "--------------------------\r\n";
	
	 $archive = new PHPZip();
	 if(!empty($zip))
	 {
	 $archive->Zip($zipdir, $savename);
	 }
	 elseif(!empty($zipdown))
	 {
	 $archive->ZipAndDownload($zipdowndir);
	 }
	 elseif(!empty($unzip))
	 {
	 $zipfile = $unzipfile;
	 $savepath = $unziptarget;
	 $array = $archive->GetZipInnerFilesInfo($zipfile);
	 $filecount = 0;
	 $dircount = 0;
	 $failfiles = array();
	 set_time_limit(0); // 修改为不限制超时时间(默认为30秒)
	
	 for($i=0; $i<count($array); $i++) {
	 if($array[$i][folder] == 0){
	 if($archive->unZip($zipfile, $savepath, $i) > 0){
	 $filecount++;
	 }else{
	 $failfiles[] = $array[$i][filename];
	 }
	 }else{
	 $dircount++;
	 }
	 }

	 set_time_limit(30);

	printf("文件夹:%d&nbsp;&nbsp;&nbsp;&nbsp;解压文件:%d&nbsp;&nbsp;&nbsp;&nbsp;失败:%d\r\n", $dircount, $filecount, count($failfiles));
	 if(count($failfiles) > 0){
	 foreach($failfiles as $file){
	 printf("&middot;%s\r\n", $file);
	 }
	 }
	 }
	 elseif(!empty($readfileinfo))
	 {
	 $array = $archive->GetZipInnerFilesInfo($readfile);
	 for($i=0; $i<count($array); $i++) {
	 printf("<b>&middot;%s</b>\r\n", $array[$i][filename]);
	 foreach($array[$i] as $key => $value)
	 printf("%s => %s\r\n", $key, $value);
	 print "\r\n------------------------------------\r\n\r\n";
	 }
	 }
	 elseif(!empty($readcomment))
	 {
	 $comment = $archive->GetZipComment($readfile);
	 printf("%s\r\n", $comment);
	 }
	?>
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