如何在30分钟后过期PHP会话?

我需要保持一个会话存活30分钟，然后销毁它。

当前回答

请使用以下代码块在您的包括文件加载在每一页。

$expiry = 1800 ;//session expiry required after 30 mins
    if (isset($_SESSION['LAST']) && (time() - $_SESSION['LAST'] > $expiry)) {
        session_unset();
        session_destroy();
    }
    $_SESSION['LAST'] = time();

2016-08-26 06:55:45

其他回答

使用时间戳……

<?php
if (!isset($_SESSION)) {
    $session = session_start();
} 
if ($session && !isset($_SESSION['login_time'])) {
    if ($session == 1) {
        $_SESSION['login_time']=time();
        echo "Login :".$_SESSION['login_time'];
        echo "<br>";
        $_SESSION['idle_time']=$_SESSION['login_time']+20;
        echo "Session Idle :".$_SESSION['idle_time'];
        echo "<br>";
    } else{
        $_SESSION['login_time']="";
    }
} else {
    if (time()>$_SESSION['idle_time']){
        echo "Session Idle :".$_SESSION['idle_time'];
        echo "<br>";
        echo "Current :".time();
        echo "<br>";
        echo "Session Time Out";
        session_destroy();
        session_unset();
    } else {
        echo "Logged In<br>";
    }
}
?>

我用了20秒的时间戳使会话过期。

如果你需要30分钟，加1800(30分钟单位秒)…

2018-03-21 10:40:05

在会话中存储时间戳

<?php    
$user = $_POST['user_name'];
$pass = $_POST['user_pass'];

require ('db_connection.php');

// Hey, always escape input if necessary!
$result = mysql_query(sprintf("SELECT * FROM accounts WHERE user_Name='%s' AND user_Pass='%s'", mysql_real_escape_string($user), mysql_real_escape_string($pass));

if( mysql_num_rows( $result ) > 0)
{
    $array = mysql_fetch_assoc($result);    

    session_start();
    $_SESSION['user_id'] = $user;
    $_SESSION['login_time'] = time();
    header("Location:loggedin.php");            
}
else
{
    header("Location:login.php");
}
?>

现在，检查时间戳是否在允许的时间窗口内(1800秒是30分钟)

<?php
session_start();
if( !isset( $_SESSION['user_id'] ) || time() - $_SESSION['login_time'] > 1800)
{
    header("Location:login.php");
}
else
{
    // uncomment the next line to refresh the session, so it will expire after thirteen minutes of inactivity, and not thirteen minutes after login
    //$_SESSION['login_time'] = time();
    echo ( "this session is ". $_SESSION['user_id'] );
    //show rest of the page and all other content
}
?>

2015-05-21 11:20:50

在这里你可以设定时间

$lifespan = 1800;
ini_set('session.gc_maxlifetime', $lifespan); //default life time

2021-06-20 01:16:01

这是为了在设定的时间后注销用户吗?在注册会话时设置会话创建时间(或过期时间)，然后检查每个页面上的加载是否可以处理该时间。

例如:

$_SESSION['example'] = array('foo' => 'bar', 'registered' => time());

// later

if ((time() - $_SESSION['example']['registered']) > (60 * 30)) {
    unset($_SESSION['example']);
}

编辑:我有一种感觉，你指的是别的东西。

您可以通过使用会话在一定的生命周期后废弃会话。Gc_maxlifetime ini设置:

编辑: ini_set(’session。gc_maxlifetime’60 * 30);

2009-02-06 13:20:53

PHP会话在30分钟内到期的简单方法。

注意:如果你想改变时间，只需要改变30和你想要的时间，不要改变* 60:这将给出分钟。

分钟:(30 * 60) (n * 24 * 60 * 60) n = no天

<?php
    session_start();
?>

<html>
    <form name="form1" method="post">
        <table>
            <tr>
                <td>Username</td>
                <td><input type="text" name="text"></td>
            </tr>
            <tr>
                <td>Password</td>
                <td><input type="password" name="pwd"></td>
            </tr>
            <tr>
                <td><input type="submit" value="SignIn" name="submit"></td>
            </tr>
        </table>
    </form>
</html>

<?php
    if (isset($_POST['submit'])) {
        $v1 = "FirstUser";
        $v2 = "MyPassword";
        $v3 = $_POST['text'];
        $v4 = $_POST['pwd'];
        if ($v1 == $v3 && $v2 == $v4) {
            $_SESSION['luser'] = $v1;
            $_SESSION['start'] = time(); // Taking now logged in time.
            // Ending a session in 30 minutes from the starting time.
            $_SESSION['expire'] = $_SESSION['start'] + (30 * 60);
            header('Location: http://localhost/somefolder/homepage.php');
        } else {
            echo "Please enter the username or password again!";
        }
    }
?>

HomePage.php

<?php
    session_start();

    if (!isset($_SESSION['luser'])) {
        echo "Please Login again";
        echo "<a href='http://localhost/somefolder/login.php'>Click Here to Login</a>";
    }
    else {
        $now = time(); // Checking the time now when home page starts.

        if ($now > $_SESSION['expire']) {
            session_destroy();
            echo "Your session has expired! <a href='http://localhost/somefolder/login.php'>Login here</a>";
        }
        else { //Starting this else one [else1]
?>
            <!-- From here all HTML coding can be done -->
            <html>
                Welcome
                <?php
                    echo $_SESSION['luser'];
                    echo "<a href='http://localhost/somefolder/logout.php'>Log out</a>";
                ?>
            </html>
<?php
        }
    }
?>

LogOut.php

<?php
    session_start();
    session_destroy();
    header('Location: http://localhost/somefolder/login.php');
?>

2011-09-13 06:39:12

如何在30分钟后过期PHP会话?

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