3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $v = 50.1; var_dump(preg_replace('/(E[+-])(\d)$/', '\${1}0$2', sprintf('%1.2E',$v)));
Output for 5.2.1 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
string(10) "5.01${1}01"
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.2.0
string(0) ""