3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = ['test' => '1', 'test2' => 2, 'test3' => 3]; $filter = ['test', 'test2']; $a = array_intersect_key($a, array_flip($filter)); vardump($a);
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function vardump() in /in/nh4lg:8 Stack trace: #0 {main} thrown in /in/nh4lg on line 8
Process exited with code 255.
Output for 5.4.10 - 5.6.28
Fatal error: Call to undefined function vardump() in /in/nh4lg on line 8
Process exited with code 255.
Output for 5.3.20 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/nh4lg on line 3
Process exited with code 255.