public static function FILTER_SANITIZE_TOKEN($value)
	{
		$value = preg_replace('/[^\w]/', '', $value);
		$value = strtoupper($value);
		
		return $value?:false;
	}
public static function FILTER_SANITIZE_TOKEN($value)
	{
		$value = preg_replace('/[^\w]/', '', $value);
		$value = strtoupper($value);
		
		return $value?:false;
	}
public static function FILTER_SANITIZE_TOKEN ( $ value ) { $ value = preg_replace ( '/[^\w]/' , '' , $ value ) ; $ value = strtoupper ( $ value ) ; return $ value ? : false ; }
not empty token
not empty token