3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo filter_var(1, FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var('1', FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var(0, FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var('0', FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var(true, FILTER_VALIDATE_BOOLEAN); echo PHP_EOL; echo filter_var(false, FILTER_VALIDATE_BOOLEAN); echo PHP_EOL;
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
1 1 1