会话没有被存储,除非我销毁非存在会话?

时间:2014-12-12 21:13:44

标签: php mysql session

会话未被存储,除非我销毁非存在的会话。我正在尝试创建登录表单,每次登录时它都不起作用,除非我去logout.php,它有session_destroy();然后,当我再次登录时,它完美无缺。

代码:

    <?php
    @session_start();
    require_once ( 'include/config.php' );
    class users{
    public function login() {
    session_start();
    if(!isset($_SESSION['id'])) {
    $login_submit=$_POST ['submit'];
    if (isset($login_submit)) {

    $login_username=$_POST ['username'];
    $login_password=$_POST ['password'];
    $login_username = stripslashes($login_username);
    login_password = stripslashes($login_password);
    $login_username = mysql_real_escape_string($login_username);
    $login_password = mysql_real_escape_string($login_password);
    $site_info=mysql_query("SELECT * FROM site_settings");
    $site_settings=mysql_fetch_object($site_info);
    $site_url=$site_settings->site_url;

    $login=mysql_query("SELECT * FROM users where username='$login_username' AND     password='$login_password' ");
    $rows=mysql_num_rows($login);

    $admin_login=mysql_query("SELECT * FROM admin where admin_u='$login_username' AND  admin_p='$login_password' ");
    $admin_login_info=mysql_fetch_object($admin_login);
    $admin_rows=mysql_num_rows($admin_login);

    if($rows == 1) {
    $linfo=mysql_fetch_object($login);
    $_SESSION ['id']=$linfo->id;
    $_SESSION ['username']=$login_username;
    echo "<meta http-equiv='refresh' content='0,overview'>";
    }

    elseif($admin_rows == 1) {

    $_SESSION ['adminid']=$admin_login_info->id;
    $_SESSION ['adminusername']=$admin_login_info->username;
    echo "<meta http-equiv='refresh' content='0,admin/services.php'>";

    }
    else {
    echo "<p id='lger'> اسم المستخدم او كلمة السر غير صحيحة </p>";
    }
     }

    }else {echo "<meta http-equiv='refresh' content='0,overview'>";}

    }
    }
    ?>

页面代码包含登录功能:

    <?php
    @session_start();
    require_once ( 'include/functions.php' );
    if(!isset($_SESSION['id'])) {
    print ("
    <div id='login'>
    <p id='loginp'>تسجيل الدخول </p><br><br>
    <form action='index' method='post' id='form'>
    <input type='text' name='username' placeholder='اسم المستخدم' class='linput'>    </input><img src='images/login.png' class='limg'></img><br><br>
    <input type='password' name='password' placeholder='كلمة السر' class='linput'></input><img src='images/lock.png' class='limg'></img><br><br>
    <input type='submit' name='submit' value='دخول' class='lbutton'> </input>
    </form>
    <br>
    <hr id='hrlogin'>
    <div id='aga'><p id='new'>لاتمتلك حساب؟</p>
    <a href='signup.php' id='nhref'>أنشئ حساب جديد</a></div>
    </div>
    ");
    $users = new users();
    $users->login();
    } else {
    echo "<meta http-equiv='refresh' content='0,overview'>";

    }
    ?>

1 个答案:

答案 0 :(得分:1)

您可以随时使用以下内容测试您的会话:

if(! isset($_SESSION)) session_start();

除了上述内容之外,如果您想考虑检查是否由于某种原因禁用了会话,您可以抑制错误消息,设置测试会话变量,然后验证它是否已设置。如果不是,您可以为禁用的会话编写代码。您希望在脚本开头或附近完成所有这些操作。所以作为一个例子(根据错误处理设置的不同而不同):

$_SESSION['valid'] = 'valid';

if('valid' !== $_SESSION['valid'])
{
   // handle disabled sessions
}

如果您使用的是PHP 5.4+,还有一个名为session_status()

的酷炫小技巧
if (PHP_SESSION_NONE === session_status()) session_start();

希望这有帮助。