- parse_str: documentation ( source)
- var_export: documentation ( source)
- array_change_key_case: documentation ( source)
<?php
parse_str('paramName1=Hello¶mname2=World&fOo[bAR][BanG]=boom', $_GET);
var_export($_GET);
echo "\n---\n";
$lower = array_change_key_case($_GET);
var_export($lower);