Simple hand-made hash function

This example shows how to create a one-way encryption method by using a very simplified algorithm.

function SimpleHash($str){   

    $n = 0;

    // The magic happens here:
    // I just loop trough all letters and add the
    // ASCII value to a integer variable.
    for ($c=0; $c < strlen($str); $c++)
        $n += ord($str[$c]);

    // After we went trough all letters
    // we have a number that represents the
    // content of the string

    return $n;
}
$TestString = 'www.jonasjohn.de';

print SimpleHash($TestString);

// returns: 1620