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array_key_last

Description

The array_key_last of Array for PHP gets the last key of an array.

Syntax

array_key_last(
    array $array
): int|string|null

Parameters

array

An array.

Return

Returns the last key of array if the array is not empty; null otherwise.

Examples

1 · array · indexed

<?

$array =
[
    "value1",
    "value2",
    "value3"
];

$return = array_key_last($array);

var_export($return);

2

2 · array · associative

<?

$array =
[
    "key1" => "value1",
    "key2" => "value2",
    "key3" => "value3"
];

$return = array_key_last($array);

var_export($return);

'key3'

3 · array · empty

<?

$array = [];

$return = array_key_last($array);

var_export($return);

Array
(
    [0] => word1
    [1] => word2
    [2] => word3
    [3] => word4
    [4] => word5
)