3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_export((bool)[]); echo "\n"; var_export((bool)['not empty']); echo "\n"; var_export((bool)[0]); echo "\n"; var_export((bool)[null]); echo "\n"; var_export((bool)[false]); echo "\n"; $noElements = []; if ($noElements) { echo 'not empty'; } else { echo 'empty'; }
Output for 7.1.25 - 7.1.31, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.26, 8.1.0 - 8.1.13
false true true true true empty

preferences:
76.61 ms | 416 KiB | 13 Q