if(empty(${$_key.'_size'}))
    {
        ${$_key.'_size'} = @filesize($$_key);
    }

$imtypes = array("image/pjpeg", "image/jpeg", "image/gif", "image/png", "image/xpng", "image/wbmp", "image/bmp");
	if(in_array(strtolower(trim(${$_key.'_type'})), $imtypes)){
		$image_dd = @getimagesize($$_key); if($image_dd == false){
			continue;
		}
		if (!is_array($image_dd)) {
			exit('Upload filetype not allow !');
		}
	}