从网上搜集到的，据说是雅虎的面试题。 1. Which of the following will not add john to the users array? 1. $users[] = ‘john’; 2. array_add($users,’john’); //wrong 3. array_push($users,’john’); 4. $users ||= ‘john’; //wrong 2. What’s the difference between sort(), asort()
