$secret = '*****';
    $response = $_POST['g-recaptcha-response'];
    $remoteip = $_SERVER['REMOTE_ADDR'];
    $captcha = file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=$secret&response=$response&remoteip=$remoteip");
    $result = json_decode($url, TRUE);
    $username;$password;$captcha;
    if(isset($_POST['username']))
      $username=$_POST['username'];
    if(isset($_POST['password']))
      $password=$_POST['password'];
    if(isset($_POST['g-recaptcha-response']))
      $captcha=$_POST['g-recaptcha-response'];
    if(!$captcha){
      echo '<p class="error-message">Please Complete The Captcha!</p>';
      header("location: login.php");
      exit;
    }
    $response = json_decode(file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=6LfG-S8UAAAAAIqW1sBE31yMPyO4zeqOCgDzL1mA&response=".$captcha."&remote=".$_SERVER['REMOTE_ADDR']), true);
    if($response['success'] == false) {
      echo '<p class="error-message">Please Fill Captcha!</p>';
    }
    else {
      echo '<p class="error-message2">Welcome</p>';
    }
          if (isset($_POST['submit'])) {
              $username = $_POST['username'];
              $password = $_POST['password'];
              $q = $handler->prepare('SELECT * FROM users WHERE username = ?');
              $q->execute(array($username));
              $result = $q -> fetch(PDO::FETCH_ASSOC);
              if ($result !== false) {
                  $hash_pwd = $result['password'];
                  $hash = password_verify($password, $hash_pwd);

                  if ($hash) {
                      $_SESSION['username'] = $username;
                      header("location:index.php");return;
                  }
                  else {
                      echo '<p class="error-message3"><br><br>You have ented an incorrect login!<br>Please try again</p>';
                  }
              }
          }
          ?>