Wont delete table row by ID

So I have my site almost all setup, except I want to allow users the ability to delete data from their games.

So I have it setup where their data is one one page, listed via looping. Under each, their is a delete button which looks like this:


echo "<a href=\"delete_game.php?id=" . $index . "\">Delete</a>";


So ive got it working fine the $index variable is being pulled down, and transferred to the delete_game page.

On the delete game page I say "Do you really want to delete this game"

Then wrote:


if(isset($_POST['yes'])) {
$query = mysql_query("DELETE FROM games WHERE index='$index'");

if($query) {
echo "The game has been deleted";
} else {
echo "The game could not be deleted";
}


Every single time it says "the game could not be deleted" I have tried it since by trying to the delete the row by a different variable and it works.

So the issue is $index is my auto increment primary key, but it wont let me delete by it, so how do I do this?

Or do I really need to pass each and every unique variable from page to page, and do it that way?

Help is greatly appreciated.

Thanks

echo "<a href=\"delete_game.php?id=" . $index . "\">Delete</a>";
if(isset($_POST['yes'])) {
A value passed via url will be inside the global array $_GET, and so you must look for $_GET['id']

PS: You must validate the id to make sure that the user has the right privilege to delete a particular entry from table.