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This article introduces the knowledge of "how php returns the last key name of the array". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Array_key_last ($array) gets the last key name of the specified array $array.

Returns null if the specified array is an empty array.

2. Use the end ($array) function to point the inner pointer of the array to the last element.

The last element at this point is the current element of the array.

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