3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = '123'; $a = null; if ( is_string( $a ) ) echo var_export($x, true);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0