- rsort: documentation ( source)
- print_r: documentation ( source)
- preg_match_all: documentation ( source)
<?php
$commands = "[CMD1,[CMD2],[CMD3,[CMD4],[CMD5]]]";
if (preg_match_all('/[^][,]+/', $commands, $matches)) {
$array = $matches[0];
rsort($array);
print_r($array);
}