3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo = [true, false, true]; $bar = ['joe', 'paul', 'steve']; $result = array_intersect_keys($bar, array_filter($foo)); var_dump($result);
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function array_intersect_keys() in /in/3u31n:6 Stack trace: #0 {main} thrown in /in/3u31n on line 6
Process exited with code 255.
Output for 5.4.11 - 5.6.28
Fatal error: Call to undefined function array_intersect_keys() in /in/3u31n on line 6
Process exited with code 255.
Output for 5.3.21 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/3u31n on line 3
Process exited with code 255.