Code5

<?php

$username = readline();
$usernameRev = strrev($username);
$incorrect = 0;

while (true){
    $password = readline();

    if ($password == $usernameRev){
        echo "User $username logged in.\n";
        break;

    }else {
        echo "Incorrect password. Try again.\n";
        $incorrect++;
    }

    if ($incorrect == 4){
        echo "User $username blocked!\n";
        break;
    }
}