使用者通過form表單，使用post方法，將賬號和密碼提交到伺服器，伺服器驗證賬號和密碼，若不對，彈出提示框要求重新輸入，若正確，頁面跳轉到主框架頁面

1、程式碼片段——form表單

<form class="form-signin" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
        <h2 class="form-signin-heading">Please sign in</h2>
        <label for="inputEmail" class="sr-only">Email address</label>
        <input name="personal[email]" type="email" id="inputEmail" class="form-control" placeholder="Email address" required autofocus>
        <label for="inputPassword" class="sr-only">Password</label>
        <input name="personal[password]" type="password" id="inputPassword" class="form-control" placeholder="Password" required>
        <div class="checkbox">
          <label>
            <input type="checkbox" value="remember-me"> Remember me
          </label>
        </div>
		<input type="hidden" name="action" value="submitted" />
        <button class="btn btn-lg btn-primary btn-block" type="submit" name="submit" >Sign in</button>
      </form>
 

<?php
			if (isset($_POST['action']) && $_POST['action'] == 'submitted') {
				echo '<pre>';
			 
				print_r($_POST);
				
				echo $_POST['personal']['email'];
				echo '<br />';
				echo $_POST['personal']['password'];
				if(userAgreed($_POST['personal']['email'], $_POST['personal']['password'])){
					echo "Login success";
				}else{
					echo "Login failed";
				}
				echo '<a href="'. $_SERVER['PHP_SELF'] .'">返回重填</a>';
			 
				echo '</pre>';
			} else {
		?>
 

function userAgreed($username, $password){
		$db = M('user');
		$condition['email'] = $username;
		$condition['password'] = $password;
		$result = $db->where($condition)->find();
		
		dump($result);
		
		if(isset($result)){
			return true;
		}else{
			return false;
		}
	}