3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( 0 => null, 1 => false, 2 => null ); if (count(array_keys($array, null)) != count($array)) { echo 'true'; } else { echo 'false'; } /* if(array_filter($array)) { echo "true\n"; } else echo "false\n"; $array[1] = "test"; if (array_filter($array)) { echo "true\n"; } else echo "false\n"; */
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
false

preferences:
225.1 ms | 405 KiB | 342 Q