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array_change_key_case

(PHP 4 >= 4.2.0, PHP 5)

array_change_key_case — Ändert alle Schlüssel in einem Array

Beschreibung

array array_change_key_case ( array $input [, int $case = CASE_LOWER ] )

Gibt ein Array zurück, in dem alle Schlüssel aus input in Klein- oder Großbuchstaben umgewandelt wurden. Numerische Indizes werden nicht geändert.

Parameter-Liste

input: Das Eingabe-Array
case: Entweder CASE_UPPER oder CASE_LOWER (Standard)

Rückgabewerte

Gibt ein Array zurück, dessen Schlüssel in Klein- oder Großbuchstaben umgewandelt wurden, oder FALSE, wenn input kein Array ist.

Fehler/Exceptions

Wirft E_WARNING, wenn input kein Array ist.

Beispiele

Beispiel #1 array_change_key_case()-Beispiel


<?php
$input_array = array("FirSt" => 1, "SecOnd" => 4);
print_r(array_change_key_case($input_array, CASE_UPPER));
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

Array
(
    [FIRST] => 1
    [SECOND] => 4
)

Anmerkungen

Hinweis: Hat ein Array Indizes, die nach einem Durchlauf durch diese Funktion gleich sind (z.B. "keY" und "kEY"), überschreibt der spätere Wert im Array andere Indizes.

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