<?php
$text = 'something/aaa/9321/something';
echo $result[1];
PD9waHAKCiR0ZXh0ID0gJ3NvbWV0aGluZy9hYWEvOTMyMS9zb21ldGhpbmcnOwokZmlyc3QgPSBwcmVnX3F1b3RlKCdhYWEvJywgJy8nKTsKJGFmdGVyID0gcHJlZ19xdW90ZSgnLycsICcvJyk7CnByZWdfbWF0Y2goIi8kZmlyc3QoLiopJGFmdGVyL3MiLCR0ZXh0LCRyZXN1bHQpOwplY2hvICRyZXN1bHRbMV07