经测试代码如下：
<?PHP
/**
* 解压zip文件
*
* @param
* @arrange (512.笔记) jb51.cc
**/
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';
}