PHP解压ZIP的一个类
= $cdir['offset'];
if(!is_array($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 $stat; } function ReadFileHeader($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) $h |
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