Online PHP editor | refs for uNdNI

<?php $tests = [ [], // expect null [true, true], // expect true [false, false], // expect false [true, false, true], // expect null [false, true, false], // expect null ]; foreach ($tests as $bools) { echo "\n"; var_export( !$bools || ( ($hasTrues = array_any($bools, fn($b) => $b === true)) && array_any($bools, fn($b) => $b === false) ) ? null : $hasTrues ); }