php在Windows下获取文件夹和大文件大小

// 得到文件夹大小，$dir = 'F:/wamp/www/folder';function getFolderSize($dir){       $obj = new COM ( 'scripting.filesystemobject' );    if ( is_object ( $obj ) )    {        $ref = $obj->getfolder ( $dir );        $size = $ref->size;        $obj = null;    }    /*    else    {        //echo 'can not create object';    }    */    return $size;}

// 获取大文件大小/*$file = 'C:\\system_backup.zip';$size = real_filesize($file);echo "The size of the file is: $size";*/function real_filesize($file_path){    $fs = new COM("Scripting.FileSystemObject");    return $fs->GetFile($file_path)->Size;}