array_key_last
(PHP 7 >= 7.3.0)
array_key_last — Gets the last key of an array
说明
Get the last key of the given array
without affecting
the internal array pointer.
参数
-
array
-
An array.
返回值
Returns the last key of array
if the array is not empty;
NULL
otherwise.
参见
- array_key_first() - Gets the first key of an array
- end() - 将数组的内部指针指向最后一个单元