PHP Manual
PrevNext

array_change_key_case

(PHP 4 >= 4.2.0, PHP 5)

array_change_key_case -- Returns an array with all string keys lowercased or uppercased

Description

array array_change_key_case ( array input [, int case] )

array_change_key_case() changes the keys in the input array to be all lowercase or uppercase. The change depends on the last optional case parameter. You can pass two constants there, CASE_UPPER and CASE_LOWER. The default is CASE_LOWER. The function will leave number indices as is.

Example 1. array_change_key_case() example

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

The above example will output:

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

If an array has indices that will be the same once run through this function (e.g. "keY" and "kEY"), the value that is later in the array will override other indices.

PrevHomeNext
Array FunctionsUparray_chunk

Hosting by: Hurra Communications Ltd.
Generated: 2007-01-26 18:00:16