Developer Forums | About Us | Site Map
Search  
HOME > PHPMANUAL


Sponsors





Web Host
site hosted by netplex
Partners

Online Manuals

array_change_key_case

(PHP 4 >= 4.2.0)

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 printout of the above program will be:

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.

Copyright 2004-2017 GrindingGears.com. All rights reserved. Site hosted by NETPLEX