3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = [ 'id' => [] ]; vardump(isset($array['id']));
based on bqqt9
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function vardump() in /in/RBsMV:5 Stack trace: #0 {main} thrown in /in/RBsMV on line 5
Process exited with code 255.
Output for 5.4.10 - 5.6.28
Fatal error: Call to undefined function vardump() in /in/RBsMV on line 5
Process exited with code 255.
Output for 5.3.20 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/RBsMV on line 2
Process exited with code 255.