Question

I have a call to a PHP script from my home page which I do like this:

echo '<a href="/problems/delete_problem.php?problem_id='.$problem_id.'">Delete</a>';

So it is pretty standard.

Then in my PHP I have this code:

<?php
// delete_problem

include '../connect.php'; // Here I have db connection settings

error_log ( ".......in delete problem");

$problem_id = mysql_real_escape_string($_GET["problem_id"]);

?>

And the last line where I try to get the problem_id is throwing the undefined index error. Any idea why?

Thanks!

Answer 1

Have you got an actual connection inside connect.php? Or does it just store variables and the like?

mysql_real_escape_string may be causing a problem as if a connection is not available it will fail.

Beyond that, try echoing out the contents of the GET variable. You can also check whether it exists by using (isset($_GET["problem_id"])).