Online PHP editor | refs for OZF61

<?php // prelim $object = new stdClass; $object->field = 10; $param = new stdClass; $param->object = $object; // ternary variant $field = !($param && $param->object)?: $param->object->field; echo $field,"\n"; // alternative to ANDing $field = get_object_vars( $param->object )["field"] ?? null; echo $field,"\n";