array_change_key_case()

array_change_key_case - Changes all keys in an array

Syntax

array array_change_key_case (array $input, int $case)

Arguments

• input - The array to work on
• case - Either CASE_UPPER or CASE_LOWER (default)

Description

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

Version

PHP 4.2.0, 5

Return value

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