Online PHP editor | refs for W5fhu

<?php const REQUIRED = 1; const OPTIONAL = 2; const IS_ARRAY = 4; $args = [ 'a' => [IS_ARRAY], 'b' => [OPTIONAL], 'c' => [REQUIRED], 'd' => [REQUIRED] ]; uasort( $args, function ($a, $b) { if ($a[0] & IS_ARRAY === IS_ARRAY) { echo "a is array\n"; return -1; } if ($b[0] & IS_ARRAY === IS_ARRAY) { echo "b is array\n"; return 1; } if ($a[0] & OPTIONAL === OPTIONAL) { echo "a is optional\n"; return -1; } if ($b[0] & OPTIONAL === OPTIONAL) { echo "b is optional\n"; return 1; } return 0; } ); var_dump($args);