PHP文章沒有形式

填寫表格的代碼（login.php中）的值：PHP文章沒有形式

<?php 
if (Input::exists()) { 
    echo "Input <br/>"; 
    if (Token::check (Input::get ('token'))) { 
     echo "Token <br/>"; 
     $validate = new Validation(); 
     $validation = $validate->check ($_POST, array (
       'username' => array (
         'required' => true 
       ), 
       'password' => array (
         'required' => true 
       ) 
     )); 

     if ($validation->passed()) { 
      $user = new User(); 

      $remember = (Input::get ('remember') === 'on') ? true : false; 
     $login = $user->login (Input::get ('username'),  Input::get ('password'), $remember); 

      if ($login) { 
       Session::flash ('home', 'You are now logged in!'); 
       Redirect::to ('index.php'); 
      } else { 
       echo '<p>Sorry, logging in failed</p>'; 
      } 
     } else { 
      foreach ($validation->errors() as $error) { 
       echo $error, '<br>'; 
      } 
     } 
    }else{ 
     echo "No Token <br/>"; 
    } 
}else{ 
echo "No Input <br/>"; 
    var_dump ($_POST); 
} 
?> 
<br /> 
<div class="row"> 
<div class="col-md-4 col-md-offset-4"> 
    <p class="text-center"> 
     Log in or <a href="index.php?page=register.php">Register</a> 
    </p> 
    <form class="form-horizontal" action="" method="post"> 
     <div class="form-group"> 
      <label for="username" class="col-sm-2 control-label">Username: </label> 
      <div class="col-sm-10"> 
       <input type="text" class="form-control" name="username" 
        id="username" placeholder="Username" autocomplete="off" /> 
      </div> 
     </div> 
     <div class="form-group"> 
      <label for="password" class="col-sm-2 control-label">Password: </label> 
      <div class="col-sm-10"> 
       <input type="password" class="form-control" name="password" 
        id="password" placeholder="Password" /> 
      </div> 
     </div> 
     <div class="form-group"> 
      <div class="col-sm-offset-2 col-sm-10"> 
       <div class="checkbox"> 
        <label> <input type="checkbox" name="remember" id="remember" /> 
         Remember me 
        </label> 
       </div> 
      </div> 
     </div> 
     <input type="hidden" name="token" value="<?php echo Token::generate(); ?>" /> 
     <div class="form-group"> 
      <div class="col-sm-offset-2 col-sm-10"> 
       <input type="submit" class="btn btn-default" value="Log in" /> 
      </div> 
     </div> 
    </form> 
</div>

而且Input.php：

<?php 
class Input{ 
public static function exists($type = 'post'){ 
    switch($type){ 
    case 'post': 
     return (!empty($_POST)) ? true : false; 
     break; 
    case 'get': 
     return (!empty($_GET)) ? true : false; 
     break; 
    default: 
     return false; 
     break; 
    } 
} 

public static function get($item){ 
    if(isset($_POST[$item])){ 
     return $_POST[$item]; 
    }elseif(isset($_GET[$item])){ 
     return $_GET[$item];  
    } 
    return ''; 
} 
} 
?>

我不看看有什麼不對。我檢查了6次，但仍然沒有。 login.php包含在index.php中，但這隻有一個開始html-tag頭部和身體的開始標籤。

有人可以解釋我做錯了什麼。

來源

2016-11-09 Bart Kalkman