php对zip文件解压和压缩--改进

 <?php/** * @author wyt * 对多级目录文件压缩和解压 * 对rezip类进行了改进，更加完善了 * 不过也存在一个问题是，没有打包空的文件夹 */class zip {private $_zipObj=null;private $_zipfcArr=array();private $_basePath=null;private $_zipName;/** * init * @param zip文件名称 $zipName */function __construct($zipName){$this->_zipName=$zipName;$this->_zipObj=new rezip();}/** * 压缩一个文件夹 * @param 要压缩的目录名称 $path */public function tozip($path){//路径统一$path=str_replace('//','/',trim($path));$this->_basePath=$path;if(substr($path,-1,1)!='/'){$this->_basePath.='/';}else{$path=substr($path,0,strlen($path)-1);}$this->direct($path);$this->_zipObj->Add($this->_zipfcArr,1); //写入文件if(@fputs(@fopen($this->_zipName,"wb"),$this->_zipObj->get_file())) return $this->_zipName;return false; }/** * 解压zip文件 * @param 解压到的文件夹名称 $destPath */public function unzip($destPath){if(!file_exists($destPath)) @mkdir($destPath,0777,true);return $this->_zipObj->Extract($this->_zipName,$destPath);}function direct($path){$handler=opendir($path);while(($file=readdir($handler))!==false){if($file=='.'||$file=='..') continue;$tmp=$path.'/'.$file;$filename=str_replace($this->_basePath,'',$tmp); if(is_dir($tmp)){$this->direct($tmp);}else{//生成的zip 文件名//echo $tmp."/n"; $filesize=@filesize($tmp); $fp=@fopen($tmp,rb); $this->_zipfcArr[]=Array($filename,@fread($fp,$filesize)); @fclose($fp);}}closedir($handler);}} /** * 压缩类，进行了小小的改动 * */class rezip{ var $datasec, $ctrl_dir = array(); var $eof_ctrl_dir = "/x50/x4b/x05/x06/x00/x00/x00/x00"; var $old_offset = 0; var $dirs = Array("."); function get_List($zip_name){ $zip = @fopen($zip_name, 'rb'); if(!$zip) return(0); $centd = $this->ReadCentralDir($zip,$zip_name); @rewind($zip); @fseek($zip, $centd['offset']); for ($i=0; $i<$centd['entries']; $i++){ $header = $this->ReadCentralFileHeaders($zip); $header['index'] = $i;$info['filename'] = $header['filename']; $info['stored_filename'] = $header['stored_filename']; $info['size'] = $header['size'];$info['compressed_size']=$header['compressed_size']; $info['crc'] = strtoupper(dechex( $header['crc'] )); $info['mtime'] = $header['mtime']; $info['comment'] = $header['comment']; $info['folder'] = ($header['external']==0x41FF0010||$header['external']==16)?1:0; $info['index'] = $header['index'];$info['status'] = $header['status']; $ret[]=$info; unset($header); } return $ret; } function Add($files,$compact){ if(!is_array($files[0])) $files=Array($files); for($i=0;$files[$i];$i++){ $fn = $files[$i]; //echo $fn[0]."/n"; if(!in_Array(dirname($fn[0]),$this->dirs)) $this->add_Dir(dirname($fn[0]).'/'); if(basename($fn[0])) $ret[basename($fn[0])]=$this->add_File($fn[1],$fn[0],$compact); } return $ret; } function get_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($data)) . "/x00/x00"; } function add_dir($name) { $name = str_replace("//", "/", $name); $fr = "/x50/x4b/x03/x04/x0a/x00/x00/x00/x00/x00/x00/x00/x00/x00"; $fr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) ); $fr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0); $this -> datasec[] = $fr; $new_offset = strlen(implode("", $this->datasec)); $cdrec = "/x50/x4b/x01/x02/x00/x00/x0a/x00/x00/x00/x00/x00/x00/x00/x00/x00"; $cdrec .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) ); $cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 ); $ext = "/xff/xff/xff/xff"; $cdrec .= pack("V", 16 ).pack("V", $this -> old_offset ).$name; $this -> ctrl_dir[] = $cdrec; $this -> old_offset = $new_offset; //echo $name; $this -> dirs[] = $name; } function add_File($data, $name, $compact = 1) { $name = str_replace('//', '/', $name); $dtime = dechex($this->DosTime()); $hexdtime = '/x' . $dtime[6] . $dtime[7].'/x'.$dtime[4] . $dtime[5] . '/x' . $dtime[2] . $dtime[3].'/x'.$dtime[0].$dtime[1]; eval('$hexdtime = "' . $hexdtime . '";'); if($compact) $fr = "/x50/x4b/x03/x04/x14/x00/x00/x00/x08/x00".$hexdtime; else $fr = "/x50/x4b/x03/x04/x0a/x00/x00/x00/x00/x00".$hexdtime; $unc_len = strlen($data); $crc = crc32($data); if($compact){ $zdata = gzcompress($data); $c_len = strlen($zdata); $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); }else{ $zdata = $data; } $c_len=strlen($zdata); $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len); $fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata; $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len); $this -> datasec[] = $fr; $new_offset = strlen(implode('', $this->datasec)); if($compact) $cdrec = "/x50/x4b/x01/x02/x00/x00/x14/x00/x00/x00/x08/x00"; else $cdrec = "/x50/x4b/x01/x02/x14/x00/x0a/x00/x00/x00/x00/x00"; $cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len); $cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 ); $cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 ); $cdrec .= pack('V', $this -> old_offset ); $this -> old_offset = $new_offset; $cdrec .= $name; $this -> ctrl_dir[] = $cdrec; return true; } function DosTime() { $timearray = getdate(); if ($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); } function Extract ( $zn, $to, $index = Array(-1) ) { $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); } // print_r($index);//print_r($cdir); for ($i=0; $i<$cdir['entries']; $i++) { @fseek($zip, $pos_entry); $header = $this->ReadCentralFileHeaders($zip); print_r($header); $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 $stat; } function ReadFileHeader($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, $data['filename_len']); if ($data['extra_len'] != 0) { $header['extra'] = fread($zip, $data['extra_len']); } else { $header['extra'] = ''; } $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 $header; } function ReadCentralFileHeaders($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', $binary_data); if ($header['filename_len'] != 0) $header['filename'] = fread($zip,$header['filename_len']); else $header['filename'] = ''; if ($header['extra_len'] != 0) $header['extra'] = fread($zip, $header['extra_len']); else $header['extra'] = ''; if ($header['comment_len'] != 0) $header['comment'] = fread($zip, $header['comment_len']); else $header['comment'] = ''; if ($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; return $header; } function ReadCentralDir($zip,$zip_name){ $size = filesize($zip_name); if ($size < 277) $maximum_size = $size; else $maximum_size=277; @fseek($zip, $size-$maximum_size); $pos = ftell($zip); $bytes = 0x00000000; while ($pos < $size) { $byte = @fread($zip, 1); $bytes=($bytes << 8) | Ord($byte); if ($bytes == 0x504b0506){ $pos++; break; } $pos++; } $data=unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18)); if ($data['comment_size'] != 0) $centd['comment'] = fread($zip, $data['comment_size']); else $centd['comment'] = ''; $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 $centd; } function ExtractFile($header,$to,$zip){ $header = $this->readfileheader($zip); if(substr($to,-1)!="/") $to.="/"; if(!@is_dir($to)) @mkdir($to,0777,true); $basep=dirname($to.$header['filename']); @mkdir($basep,0777,true); $pth = explode("/",dirname($header['filename'])); 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.$header['filename'].'.gz','rb') or die("Cette archive est compress閑"); if(!$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.$header['filename'].'.gz'); } } return true; }}/***********************************///调用实例//建立一个实例$z=new zip('test2.zip');//压缩，test2.zip文件是压缩的目标文件名//'F:/www/data/16'需要压缩的文件夹$z->tozip('F:/www/data/16');//解压，test2.zip文件是需要解压的文件名//'F:/www/wytddd/'解压到的路径$z->unzip('F:/www/wytddd/');?>