How does php return the last key name of an array

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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