- var_dump: documentation ( source)
- round: documentation ( source)
<?php
$original = 4189.94;
$int = (int) round($original * 100);
$float = $original * 100;
var_dump($int); //should be 418,994 ??
$double = $int / 100; // should be 4189.94 again ??
var_dump($double);
var_dump($double == $original);