Web | This Site

Learning PHP
Advanced PHP
PHP Function Reference
PHP Useful Resources
Selected Reading
© 2011 TutorialsPoint.COM

| Home |  | References |  | Discussion Forums |  | About TP

# PHP Function array_change_key_case()

## Syntax

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

## Definition and Usage

Returns an array with all keys from input lowercased or uppercased. Numbered indices are left as is.

## Paramters

Parameter | Description
--- | ---
input | The array to work on
case | Either CASE_UPPER or CASE_LOWER (default)

## Return Values

Returns an array with its keys lower or uppercased, or false if input is not an array.

## Example

Try out following example:

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

This will produce following result:

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

Advertisement

Online Image Processing

Indian Baby Names