3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $var = null; if ( !$var ) { echo 'without is_null() |'; } if ( is_null($var) ) { echo 'with is_null()'; }
based on 2MZOV
Output for 5.5.0 - 7.2.6
without is_null() |with is_null()