- json_decode: documentation ( source)
- urldecode: documentation ( source)
- print_r: documentation ( source)
<?php
$string = "data%5B0%5D%5Bfname%5D=Tester&data%5B0%5D%5Blname%5D=Testerson&data%5B0%5D%5Bemail%5D=test%40test.com&data%5B0%5D%5Bbirthyear%5D=1984&data%5B0%5D%5Bethnicity%5D=1&data%5B0%5D%5Bgender%5D=1&data%5B0%5D%5Brecruiter%5D=1&data%5B0%5D%5BcreationDate%5D=2014-02-03+19%3A39%3A19";
$new_string = urldecode($string);
print_r($new_string);
$array = json_decode($new_string);
print_r($array);