ถามเรื่องการลบไฟล์ใน Temp ครับ ช่วยเข้ามาอ่านที่นะครับ

<?
$myarray = array("All Users","Default User","LocalService","NetworkService","New Folder");
$i = 0;
foreach (glob("C:/Documents and Settings/*") as $filename) {
	$strname =  substr($filename, 26);
	if ($strname != $myarray[$i]){;
		$userFile =  $strname;
	}
	$i++;
}
foreach (glob("C:/Documents and Settings/$userFile/Local Settings/Temp/*.*") as $filename) {
    $FileCreationTime = filectime($filename);
    $FileAge = time() - $FileCreationTime; 
    if ($FileAge/60 > 0){
        echo "$filename is older than 20 minutes<br>";
		$clearFile = unlink($filename);
		if ($clearFile) {
			echo "$filename is clear<br>";
		}
    }
}
?>