- var_dump: documentation ( source)
- urlencode: documentation ( source)
- base64_encode: documentation ( source)
<?php
$s = urlencode('315xb471ie04wc0wog4ok04ks00kkoc0kw4');
$i = urlencode('3p8n1lq84wowsgw4owk0k80wwsw8s4w4k8s8wcc4cgs4c84cwk');
$x = $i.':'.$s;
$x = base64_encode($x);
var_dump($x);