Increase and decrease row value by 1 in MySQL
- by Elliott
Hi I have a MySQL database table "points" the user can click a button and a point should be removed from their account, the button they pressed has an ID of another user, therefore their account must increase by one.
I have it working in jQuery and checked the varibles/posts in Firebug, and it does send the correct data, such as:
userid= 1
posterid = 4
I think the problem is with my PHP page:
<?php
include ('../functions.php');
$userid=mysql_real_escape_string($_POST['user_id']);
$posterid=mysql_real_escape_string($_POST['poster_id']);
if (loggedin())
{
include ('../connection.php');
$query1 = "UPDATE `points` SET `points` = `points` - 1 WHERE `userID` = '$userid'";
$result1=mysql_query($query1);
$query2 = "UPDATE `points` SET `points` = `points` + 1 WHERE `userID` = '$posterid'";
$result2=mysql_query($query2);
if ($result1 && result2)
{
echo "Successful";
return 1;
}
else
{
echo mysql_error();
return 0;
}
}
?>
Any ideas? Thanks :)
