Database deletion using PHP

TABLE STRUCTURE

Product

id integer primary key auto_increment,name varchar(50),price decimal(10,2),category_id integer,imagepath varchar(100),updateDay date

PHP CODE

<?php
    $idStr=$_POST["idStrVal"];
    $idVal=strtok($idStr,'|');
    $con=mysql_connect("localhost","root","");
    mysql_select_db("phpDB",$con);
    while($idVal!==FALSE)
    {
        mysql_query("delete from product where id=".$idVal);
        $idVal=strtok("|");
    }
    mysql_query("commit");
    mysql_close($con);
?>