Change the case of array keys Sometimes you want to change the case of array keys, this can been done efficiently https://www.php.net
requires: php 4.0.0

Assume you want to be all your are keys in a certain case, either uppercase or lowercase. You can loop your keys and change the keys but this can be done more efficient.

Original code



        $myArray = array("name" => "John Doe", "Age" => 40, "emAil" => "john@email.com");

        $newArray = [];
        foreach($myArray as $key => $value){
            $key = strtoupper($key);
            $newArray[$key] = $value;
        }
        $myArray = $newArray;
        $outputOriginal = json_encode($myArray);

        

Refactored code



        $myArray = array("name" => "John Doe", "Age" => 40, "emAil" => "john@email.com");

        $myArray = array_change_key_case($myArray, CASE_UPPER);
        $outputRefactored = json_encode($myArray);

        

Here is the output of the code

This is the output of original

{"NAME":"John Doe","AGE":40,"EMAIL":"john@email.com"}

This is the output of refactor

{"NAME":"John Doe","AGE":40,"EMAIL":"john@email.com"}

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