3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 1.001; var_dump(round(round($a,2)-round($a,8),2));
based on hieFb
Output for 5.2.1 - 7.1.7, 7.2.0
float(-0)
Output for 7.1.10

Process exited with code 137.
Output for 4.3.0 - 5.2.0
float(0)