Question

首先我设置会话，但当我print_r() $_SESSION时，它只显示Array() 1

我确实在session_start();

的两个文件上启动了会话

功能I使用：

function login($Username, $password, $pdo)
{


    $sth = $pdo->prepare("SELECT * FROM `klanten` WHERE Inlognaam='$Username'");
    $sth->execute();


if ($sth->rowCount() == 1)  // als er een row is met die username dan gaat hij verder
{

    // Variabelen inlezen uit query
    $row = $sth->fetch();
    $password = hash('sha512', $password . $row['Salt']); // encrypt het wachtwoord

    if ($row['Paswoord'] == $password) // als het wachtwoord gelijk is aan het ingevulde wachtwoord
    {

        $user_browser = $_SERVER['HTTP_USER_AGENT']; //  kijken welke browser je gebruikt

        $_SESSION['user_id'] = $row['KlantID'];
        $_SESSION['username'] = $row['Inlognaam'];
        $_SESSION['level'] = $row['Level'];
        $_SESSION['login_string'] = hash('sha512',$password . $user_browser);

        // Login successful.
        return true;
     } 
     else 
     {
        // password incorrect
        return false;
     }
}
else
{
    // username bestaat niet
    return false;
}
}

第2页

echo '<pre>' . print_r($_SESSION) . '</pre>';

仅返回Array()

Answer 1

方法print_r中的第二个参数是返回不打印，以获得这样的打印用途，

echo '<pre>' . print_r($_SESSION) . '</pre>';

从此处获取更多详细信息：http://php.net/manual/en/function.print-r.php

Answer 2

**You might have not started the session.This worked for me**
<?php
    session_start();
    $_SESSION['user_id'] = $row['KlantID'];
    $_SESSION['username'] = $row['Inlognaam'];
    $_SESSION['level'] = $row['Level'];
    $_SESSION['login_string'] = hash('sha512',$password . $user_browser);

    echo '<pre>' . print_r($_SESSION,true) . '</pre>';
?>

即使我设置了值，会话也是空的

2 个答案: