3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $b = 0.27*28; $a = round($b,2); var_dump($a-$b); var_dump($b);
based on E8gKk
Output for 4.3.0 - 7.1.0
float(-8.8817841970013E-16) float(7.56)