- var_dump: documentation ( source)
<?php
$tea = 20;
$tip = 0.05;
$tep = 0.1;
$tia = 0;
$aat = 239.05;
var_dump(($aat * (1 + $tip)) - ($tep * $tia) - ($tea * (1 + $tip)), 1 + $tip + $tep);
//echo ($aat * (1 + $tip)) - ($tep * $tia) - ($tea * (1 + $tip)) / 1 + $tip + $tep;