3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = ''; $b = 'hello'; if(isset($a['hello']['RML_ZONE'])){ print 'Empty'; }
Output for 4.3.0 - 5.2.9, 5.3.6 - 7.1.0
Output for 5.2.10 - 5.3.5
Notice: Uninitialized string offset: 0 in /in/Qlema on line 4