PHP - array_change_key_case

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Metóda - array_change_key_case

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

The function is used to change the array key names to uppercase or lowercase. Numeric indexes remain unchanged.

Note: The function works only with the first dimension of the array.

Beware: The function does not support multibyte characters - accent characters stay unchanged!

Procedurálne

• function array_change_key_case (array $array, int $case = CASE_LOWER) : array

Parametre

Názov	Dátový typ	Predvolená hodnota	Popis
$array	array		The input array.
$case	int	CASE_LOWER	Can contain the value of one of the following constants: CASE_LOWER (lowercase) CASE_UPPER (uppercase)

Mávratovej hodnoty

Vracia: array

Returns the resulting array or false if the input is not an array.

Note: Throws E_WARNING if the input is not an array.

Príklady

<?php
$array = [
    'SoMeThInG_MesSy' => 1,
    'neXtKey' => 2,
    'lower_case' => 3,
    'UPPER_CASE' => 4,
    'ABCČĎĚ' => 'multibyte'
];

print_r(array_change_key_case($array, CASE_LOWER));
print_r(array_change_key_case($array, CASE_UPPER));