3v4l.org

run code in 500+ PHP versions simultaneously
<?php $value = -2.2204460492503E-16; $round = round($value, 4); var_dump($round);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0, 5.3.4 - 5.3.6
float(0)
Output for 5.2.1 - 5.2.17, 5.3.0 - 5.3.3, 5.3.7 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.33, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
float(-0)
preferences:
31.4 ms | 1146 KiB | 14 Q