delimiter ||

DROP FUNCTION IF EXISTS IS_MOBILE||
CREATE FUNCTION IS_MOBILE( x VARCHAR(255)) RETURNS TINYINT(1)
BEGIN
DECLARE result TINYINT(1) DEFAULT 0;
SET x = LCASE(x);
IF RIGHT(x,4) = '.mp4' THEN
SET result = 1;
ELSEIF LEFT(x,9) = '[ctvideo]' THEN
SET result = 1;
END IF;
RETURN result;
END;

delimiter ;