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<?php $automerken = array("bmw" => "1 Series", "Mercedes" => "A klasse"); var_dump($automerken); print_r(array_change_key_case($automerken, CASE_UPPER)); print_r(array_change_key_case($automerken, CASE_LOWER));
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["bmw"]=> string(8) "1 Series" ["Mercedes"]=> string(8) "A klasse" } Array ( [BMW] => 1 Series [MERCEDES] => A klasse ) Array ( [bmw] => 1 Series [mercedes] => A klasse )

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