$query = "UPDATE TeSt
	 SET 2=$st2,3=$st3,4=$st4
		WHERE 1=$st1);";

şeklindeki koduma aşağıdaki hatayı verdi

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SET 2=rfv,3=tgb,4=yhn WHERE 1=8 )' at line 2