- var_dump: documentation ( source)
- hex2bin: documentation ( source)
- hash: documentation ( source)
<?php
// https://stackoverflow.com/questions/25573743/can-crc32c-ever-return-to-0#25576636
var_dump(hash('crc32c', hex2bin('ab9be09b')));
var_dump((bool) hash('crc32c', hex2bin('ab9be09b')));