Online PHP editor | refs for 8TPZq

<?php $payloads = [ 'a' => [null, null, null, null, null], 'b' => [null, null, 1, null, null] ]; foreach ($payloads as $key => $payload) { printf( "%s: %s, %s, %s\n", $key, var_export( array_reduce( $payload, fn($acc, $v) => $acc && $v === null, true ), true ), var_export( !array_filter( $payload, fn($v) => $v !== null ), true ), var_export( $payload === array_filter($payload, 'is_null'), true ) ); }