Array Change Key Case Function in PHP

In this article I explain the PHP array_change_key_case function.
  • 1798

PHP array_change_key_case Function

The array_change_key_case() function returns an array with all keys from input lowercased or uppercased.

Syntax

array (input , case)

Parameter in array_change_key_case function

It takes two parameters; they are:

Parameter Description
input It specifies an array to work on.
case It is optional parameter and it's possible values are:
  • CASE_LOWER - Returns the array key value in lower case.
  • CASE_UPPER - Returns the array key value in upper case.


Example of array_change_key_case function

<?php

echo "<h1>Upper Case</h1>";

$input_array = array("First" => "Cat", "Second" => "Rat");

echo "<pre>";

print_r(array_change_key_case($input_array, CASE_UPPER));

echo "<h1>Lower Case</h1>";

$input_array = array("First" => "Cat", "Second" => "Rat");

echo "<pre>";

print_r(array_change_key_case($input_array, CASE_LOWER));

?>

Output

array-change-key-case-function-in-php.jpg

Categories

More Articles

© 2020 DotNetHeaven. All rights reserved.