- var_dump: documentation ( source)
- array_slice: documentation ( source)
- explode: documentation ( source)
<?php
$str = 'name=alex&checks=code1&checks=code2&checks=code3';
$name = explode("name=", explode("&", $str)[0])[1];
$checks = array_slice(explode("&checks=", $str), 1);
var_dump($name, $checks);