用户登录php后更改导航栏

Posted 2023-04-13

【中文标题】用户登录php后更改导航栏

【英文标题】：Change navbar after user login php

【发布时间】：2016-05-05 22:12:00

【问题描述】：

我希望用户登录后导航栏中的“登录/注册”按钮更改为“我的帐户”。

我用于此的navigation.php 文件目前如下所示：

<?php 
    session_start();
    include("check.php");   
?>


<?php 

if ($_SESSION['username']) ?>
    <div id="nav">
        <ul >
            <li class="navbar-left"><a href="artikelen.html">Men</a></li>
            <li class="navbar-left"><a href="artikelen.html">Women</a></li>
            <li class="navbar-left"><a href="artikelen.html">Kids</a></li>
            <li class="navbar-right"><a href="view_cart.php">Cart (0)</a></li>
            <li class="navbar-right"><a href="inlog.php">My Account</a></li>
        </ul>
    </div>

<?php  else  ?>
    <div id="nav">
        <ul >
            <li class="navbar-left"><a href="artikelen.html">Men</a></li>
            <li class="navbar-left"><a href="artikelen.html">Women</a></li>
            <li class="navbar-left"><a href="artikelen.html">Kids</a></li>
            <li class="navbar-right"><a href="view_cart.php">Cart (0)</a></li>
            <li class="navbar-right"><a href="inlog.php">Login / Sign Up</a></li>
        </ul>
    </div> 
<?php 
?>

check.php 文件如下所示：

<?php
include('connection.php');
session_start();
$user_check=$_SESSION['username'];

$ses_sql = mysqli_query($db,"SELECT username FROM users WHERE username='$user_check' ");

$row=mysqli_fetch_array($ses_sql,MYSQLI_ASSOC);

$login_user=$row['username'];

if(!isset($user_check))

header("Location: index.php");

?>

如果我使用此导航栏访问网页，我会收到以下错误：

此网页有一个重定向循环 ERR_TOO_MANY_REDIRECTS

有人可以帮帮我吗？

【参考方案1】：

将您的 check.php 更新为类似的内容。

$user_check = (isset($_SESSION['username']) && trim($_SESSION['username'])!='')?trim($_SESSION['username']):false;
if(!$user_check) header("Location: index.php");
else
    $ses_sql = mysqli_query($db,"SELECT username FROM users WHERE username='$user_check' ");
    $row=mysqli_fetch_array($ses_sql,MYSQLI_ASSOC); 
    $$_SESSION['username']=$row['username'];

【参考方案2】：

删除 check.php 中的 Location 标头。您可以在显示登录表单后设置位置标题

【参考方案3】：

试试这个

导航.php

<?php 
    include("check.php");   
?>


    <?php 

    if ($loginst == 1) ?>
        <div id="nav">
            <ul >
                <li class="navbar-left"><a href="artikelen.html">Men</a></li>
                <li class="navbar-left"><a href="artikelen.html">Women</a></li>
                <li class="navbar-left"><a href="artikelen.html">Kids</a></li>
                <li class="navbar-right"><a href="view_cart.php">Cart (0)</a></li>
                <li class="navbar-right"><a href="inlog.php">My Account</a></li>
            </ul>
        </div>

    <?php  else  ?>
        <div id="nav">
            <ul >
                <li class="navbar-left"><a href="artikelen.html">Men</a></li>
                <li class="navbar-left"><a href="artikelen.html">Women</a></li>
                <li class="navbar-left"><a href="artikelen.html">Kids</a></li>
                <li class="navbar-right"><a href="view_cart.php">Cart (0)</a></li>
                <li class="navbar-right"><a href="inlog.php">Login / Sign Up</a></li>
            </ul>
        </div> 
    <?php  ?>

检查.php

<?php
include('connection.php');
session_start();
$loginst = 0;
if ($_SESSION['username']) 

$user_check = $_SESSION['username'];

$ses_sql = mysqli_query($db,"SELECT username FROM users WHERE username='$user_check' ");

$row=mysqli_fetch_array($ses_sql,MYSQLI_ASSOC);

$login_user=$row['username'];

if(!empty($login_user)) 

   $loginst = 1;




?>