有这么一个数组:$arr = array(1, 2, 3, 4);如果需要遍历然后修改值, 常规写法为:foreach ($arr AS $k => $v) { $v= $v* 2;... 1970-01-01T00:00:00+00:00 Typecho https://fengqi.me/feed/atom/php/87.html