php中运用zip

open($file,$ow?ZIPARCHIVE::OVERWRITE:ZIPARCHIVE::CREATE)===TRUE)
 {
   //增加一个文件
   $zip->addFile("c:\\master.txt");
   
   //a1.txt会被保存加压到a2.txt
   $zip->addFile("c:\\a1.txt", "c:\\a2.txt");
   
   $zip->addFile("c:\\a3.txt");
   
   //关闭 
   $zip->close();
   
  }
 ?>

 $zip = new ZipArchive();

 //打开master.zip 
 if ($zip->open("master.zip") === TRUE) 
 {
   //解压的路径
   $zip->extractTo("/path/to/folder/");
   $zip->close();
 }

 // 只解压一个文件 
 // Open master.zip for extracting single files
 if ($zip->open("master.zip") === TRUE) 
 {
   // Will extract only fonts.css from master.zip to given path.
   $zip->extractTo("/path/to/folder/","fonts.css");
   $zip->close();
 }

 //解压多个文件 
 if ($zip->open("master.zip") === TRUE) 
 {
      $files = array("fonts.css","master.css");
   $zip->extractTo("/path/to/folder/",$files);
   $zip->close();
 }