php解压缩文件方法汇总

nkc3g4

一 使用内部扩展实现（>=php5）

1. function unzip_file($file, $destination){
   // create object
   $zip = new ZipArchive() ;
   // open archive
   if ($zip->open($file) !== TRUE) {
   die ('Could not open archive');
   }
   // extract contents to destination directory
   $zip->extractTo($destination);
   // close archive
   $zip->close();
   echo 'Archive extracted to directory';
   }
   unzip_file('./a.zip','bs');
   

二 不使用组件 完全使用php内部函数

解压代码：

1. public function ExtractFile($header,$to,$zip) {
   $header = $this->readfileheader($zip);
   
   if (substr($to,-1)!="/") $to.="/";
   if ($to=='./') $to = '';
   $pth = explode("/",$to.$header['filename']);
   $mydir = '';
   for($i=0;$i<count($pth)-1;$i++) {
   if (!$pth[$i]) continue;
   $mydir .= $pth[$i]."/";
   if ((!is_dir($mydir) && @mkdir($mydir,0777)) || (($mydir==$to.$header['filename'] || ($mydir==$to && $this->total_folders==0)) && is_dir($mydir)) ) {
   @chmod($mydir,0777);
   $this->total_folders ++;
   echo 'Extract : ',$mydir,'<br>';
   }
   }
   
   if (strrchr($header['filename'],'/')=='/') return;
   if (!($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")
   

三 执行外部命令

① exec("tar -zxvf xxx.tar.gz");

② system("tar -zxvf xxx.tar.gz")

③ $obj=new com("wscript.shell");//加载组件 获得解压
$obj->run("winrar x $dir".$name." ".$dir ,1,true);//上传解压文件

// unlink($dir.$name);//删除文件

转自：http://hi.baidu.com/php_php_com/item/4de4b5fa51938842922af26b