php: Array keys case *insensitive* lookup?

Question

$myArray = array (\'SOmeKeyNAme\' => 7);  

I want $myArray[\'somekeyname\'] to return 7.
Is there a way to do this

Answer 1

A simple, but maybe expensive way, is to make a copy, then use array_change_key_case($array_copy, CASE_LOWER), and after that access array_copy['somekeyname']