parse_str problems - php

Question

I’m sorting a list and using Ajax to update a database. I need help parsing the string. This is the query string that I need to parse:
images_list[]=32&images_list[]=95&images_list[]=97&images_list[]=96&images_list[]=102&images_list[]=103&images_list[]=99&images_list[]=101&images_list[]=98&john=hi
I have put john=hi to test to see if the string is actually being sent via Ajax to the processor.php file. I am able to get the variable john=hi from the URL, so the query string is being sent perfectly fine. This is my code so far, but I can't seem to access the data I need, it appears as if nothing is there:
<?php
// Connect to the database
require_once('connect.php');
parse_str($_GET['images_list']);
for ($i = 0; $i < count($images_list); $i++) {
$id = $images_list[$i];
mysql_query("UPDATE images SET ranking = '$i' WHERE id = '$id'");
echo $images_list[$i];
}
?>

Answer 1

$_GET['images_list'] is an array of integers. There's nothing to parse there. PHP already did it for use. So, skip the parse_str part and easily use $_GET['images_list'] instead of $images_list.
Whole code:
<?php
//Connect to DB
require_once('connect.php');
foreach ($_GET['images_list'] as $i => $id) {
mysql_query("UPDATE images SET ranking = " .
mysql_real_escape_string($i) .
" WHERE id = " .
mysql_real_escape_string($id));
echo $id;
}
?>