- php_uname: documentation ( source)
- sprintf: documentation ( source)
<?php
$val = "209810563658809344";
echo sprintf('%0.0f', ($val - 1)) . '<br />';
echo bcsub($val, 1) . '<br />';
$val = "355325317306527744";
echo sprintf('%0.0f', ($val - 1)) . '<br />';
echo bcsub($val, 1) . '<br />';
echo php_uname();