[php]loop-de-loop

1

Hello,

The following code snippet, traveses (2) arrays, checking for a match. I understand the first loop through ($usernames), but where is the interation called on ($passwords)?

 
// Now we loop through each entry in our arrays looking for a valid match
    for ($count = 0; $count < count($usernames) && $matchFound == false; $count++) {

        // If username and password matches entry...
        if ($username == $usernames[$count] && $password == $passwords[$count]) {

            // Get the user's message and indicate we've found a match
            $message = $messages[$count];
            $matchFound = true;
        }
    }