- var_dump: documentation ( source)
- dechex: documentation ( source)
- pack: documentation ( source)
- hexdec: documentation ( source)
- unpack: documentation ( source)
<?php
$packed = pack('h*', dechex(PHP_INT_MAX));
$v = unpack('h*', $packed);
$v = hexdec($v[1]);
var_dump($packed);
var_dump($v);
var_dump(PHP_INT_MAX);