PHP - Logout script not working. Logged in even if variable should be false

Question

My php code keeps always logged in. The logout does not work either. There has to be some lidde error I cant spot.

I echoed the $_SESSION['logged] and it's always 1. But the $_POST['nam'] is indeed empty. So it does not keep the data when opening the site. The if-funtion for the true login, doesn't resolve true neither.

Im sorry for posting so much code, but maybe it is the mySQL part?

if(isset($_POST['send'])) {

mysqli_connect($servername,$dbuser,$dbpw,$db,$port); //DB-Conn succesfull

      $query  =   "SELECT * FROM `users` WHERE `name` LIKE '$user' AND `pw` LIKE '$pw'";
      $result =   mysqli_query($con,$query) or die(mysqli_error($connection));
      $rows   =   mysqli_fetch_assoc($result);
      if($_POST['name']==$rows['name']) {
          $_SESSION['logged']    =   true;
          echo "Not triggering, still logged in";
      }
      else { $_SESSION['logged']    =   false;}

      if(isset($_POST['logout'])) {
          $_SESSION = array();
          session_destroy();
          $_SESSION['logged'] = false;}

     echo $_SESSION['logged']; //This is always 1
  }

The form

          <?php     if($_SESSION['logged'] == false) {?>

                            <form method="post">
                                <input type="text" class="form-control" id="name" name="name" placeholder="abc">
                                <input type="password" class="form-control" id="pw" name="pw" placeholder="xyz">
                              <button type="submit" name="send">Login</button>
                            </form>        
            <?php ;}
            else {?>
                    <form method="post">
                      <button type="submit" id="logout" name="logout">Logout</button>
                    </form>

            <?php }
            ?>

Answer 1

As you can see you are wrapping the entire script in if ($_POST["send"]) statement

But in your form the $_POST["send"] is only going to exist on login form not on logout form.