3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_export(filter_var(false, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo "\n"; var_export(filter_var("foo", FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE));
Output for 5.4.8 - 5.4.25, 5.4.27 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
false NULL
Output for 5.4.26

Process exited with code 143.
Output for 5.2.0 - 5.4.7
NULL NULL
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function filter_var() in /in/7Nv69 on line 3
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: filter_var() in /in/7Nv69 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: filter_var() in /in/7Nv69 on line 3
Process exited with code 255.
Output for 4.3.1
Fatal error: Call to undefined function: filter_var() in /in/7Nv69 on line 3
Output for 4.3.0
Fatal error: Call to undefined function: filter_var() in /in/THWpv on line 3