3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $A = array(9,4,10); function standard_deviation($A){ if(is_array($sample)){ $mean = array_sum($sample) / count($sample); print $mean; } } ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0