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我想说明的通知，如Facebook，但有更多的方式只是简单地通知，但我有一些问题菜单栏上。 这是所有用户的错误，即使我创建了一个新帐户，他们也拥有相同的通知。 
代码：通知与会议
<?php
include("session.php");
?>
<html>
<head>
<link rel="icon" href="../imagens/4.png" />
<title>BlendUp</title>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="../css/costum.css">
<link rel="icon" href="Icone.png" width="50px" height="45px">
<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<!-- Latest compiled JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div id="navbar" class="navbar navbar-fixed-top">
<div class="navbar-def">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a href="../login/profile.php" class="navbar-brand"> <img src="../imagens/5.png" width="125px" height="35px" ></a>
</div>
<div class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#">Pedidos
<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="../forms/p_criar.php">Criar</a></li>
<li><a href="../php/p_view.php">Visualizar</a></li>
</ul>
</li>
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#">Conteúdo
<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Criar</a></li>
<li><a href="#">Visualizar</a></li>
</ul>
</li>
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#">Portais
<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="../forms/po_criar.php">Criar</a></li>
<li><a href="../php/po_view.php">Visualizar</a></li>
</ul>
</li>
</ul>
<?php
$result = mysqli_query($link,"SELECT * from pedidos where p_nomeuti='{$_SESSION['login_username']}' and p_estado='0'");
$result1 = mysqli_query($link,"SELECT count(*) from pedidos where p_autor='$login_session'");
$num_rows = mysqli_num_rows($result);
$num_rows1 = mysqli_num_rows($result1);
$numrowstotal= $num_rows + $num_rows1;
echo $num_rows;
echo $num_rows1;
echo $numrowstotal;
?>
<ul class="nav navbar-nav navbar-right">
<li><a class="dropdown-toggle" data-toggle="dropdown">Bem Vindo, <?php echo $login_session;?><?php echo $numrowstotal;?> </a>
<ul class="dropdown-menu">
<li><a>Por terminar <?php echo $num_rows;?></a></li>
<li><a>A fazer <?php echo $num_rows1;?></a></li>
</ul>
<li> <a href="logout.php"> Logout <img src="../imagens/6.png" style="width:15px; height:15px" align="middle" > </a> </li>
</ul>
</div>
</div><!--/.nav-collapse -->
<body style="background-color:#122a82">
</div>
<div class="container">
</head>
</html>
<link rel="stylesheet" type="text/css" href="../css/pesquisa.css">
<div class="well-searchbox">
<form class="form-horizontal" role="form">
<div class="form-group">
<label class="col-md-4 control-label">Keyword</label>
<div class="col-md-8">
<input type="text" class="form-control" placeholder="Keyword">
</div>
</div>
<div class="form-group">
<label class="col-md-4 control-label">Portais</label>
<div class="col-md-8">
<select class="form-control" placeholder="Country">
<option value="">All</option>
<option value="">Country 1</option>
<option value="">Country 2</option>
</select>
</div>
</div>
<div class="form-group">
<label class="col-md-4 control-label">Data Inicio</label>
<div class="col-md-8">
<input class="form-control" type="date" name="dataini">
</div>
</div>
<div class="form-group">
<label class="col-md-4 control-label">Data Fim</label>
<div class="col-md-8">
<input class="form-control" type="date" name="datafim">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-4 col-sm-5">
<button type="submit" class="btn btn-primary">Pesquisa</button>
</div>
</form>
</div>
</body>
</html>
session.php文件
<?php
include('../config/db.php');
session_start();
$check=$_SESSION['login_username'];
$session=mysqli_query($link,"select u_nick from utilizadores where u_nick='$check' ");
$row=mysqli_fetch_array($session);
$login_session=$row['u_nick'];
if(!isset($login_session))
{
header("Location:../index.html");
}
?>
我用PHP就像我在其他人的问题已经说过了。 这不是完整的代码，这是我的菜单的一部分。 如果你需要更多的我的代码，请告诉我生病后在这里
请不要使用'mysql'函数.perfer'mysqli'或'PDO'。参见[链接]（http://stackoverflow.com/questions/12859942/why-shouldnt-i-use-mysql-functions-in-php） – gaurav
好，谢谢，我会编辑我的代码 –
尝试'回声$ _SESSION [ 'login_username']'看到会话变量是否正在改变。 – gaurav