In the context of the Zufallsgenerator code, how does the use of shuffle function impact the randomness of the generated string?

Using the shuffle function in PHP can help improve the randomness of the generated string by rearranging the elements in a random order. This ensures that each character in the string has an equal chance of appearing in any position, making the output more unpredictable and random.

<?php
function generateRandomString($length) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString = '';
    
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }

    $randomStringArray = str_split($randomString);
    shuffle($randomStringArray);
    $randomString = implode('', $randomStringArray);

    return $randomString;
}

echo generateRandomString(10);
?>