mysql stored procedure UPDATE

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MySQL

stored-procedure

hello
i am try to update selected row using Stored Procedure but its not work weel

this is my sp

DELIMITER $$

CREATE DEFINER=`root`@`localhost` PROCEDURE `spr_StdUpdate`(
			       IN STUDENT_ID INT
			      ,IN STUDENT_NAME VARCHAR(40)
			      ,IN STUDENT_ADDRESS VARCHAR(60)
			      ,IN STUDENT_MOBILE VARCHAR(20)
			      ,IN STUDENT_CLASS VARCHAR(20)
			      ,IN STUDENT_EMAIL VARCHAR(60)
							   )
BEGIN

UPDATE  students SET 
					        
				name=STUDENT_NAME,
				address=STUDENT_ADDRESS,
				mobile=STUDENT_MOBILE,
				class=STUDENT_CLASS,
				email=STUDENT_EMAIL


 WHERE 
                                ID=STUDENT_ID;
END



I Call it from php like this

    mysql_query("Call spr_StdUpdate('$name', '$address' ,'$mobile' ,'$class' ,'$email','$ID')")
   or die(mysql_error());

but its not work