- hexdec: documentation ( source)
- printf: documentation ( source)
<?php
$number = hexdec('9d801896');
printf('%x: %0' . (PHP_INT_SIZE * 8) . "b<br />\n", $number, $number);
$number = ($number >> 13);
printf('%x: %0' . (PHP_INT_SIZE * 8) . "b<br />\n", $number, $number);