Question

这是我开始会话的地方。

的login.php

<?php
    require_once("db.php");
    require_once("functions.php");

    if(isset($_POST['submit'])) {
        global $connection;

        $username = $_POST['username'];
        $safe_username = mysqli_real_escape_string($connection, $username);

        $password = $_POST['password'];

        $query = "SELECT * FROM admin WHERE username = '{$safe_username}'";
        $result = mysqli_query($connection, $query);
        if($row = mysqli_fetch_assoc($result)) {
            $set_password = $row['password'];
            $input_password = crypt($password, $set_password);

            if($input_password == $set_password) {
                session_start();
                $_SESSION['username'] = $safe_username;
                header("location:users-area.php");
            } else {
                die(header("location:index.php?loginFailure=true"));
            }
        } else {
            die(header("location:index.php?loginFailure=true"));
        }
    }
?>

listall.php

这里是我检查它的地方。

<?php
session_start();
if(emtpy ($_SESSION['username'])){
    header("location:../login/index.php");
}

由于某种原因，这不起作用，如果您没有登录，则会将您带回登录页面，如果您正确登录，则允许您传递到listall.php。

希望有人能找到问题。

Answer 1

session_start() 必须放在login.php页面的顶部。

<?php
    session_start();
    require_once("db.php");
    require_once("functions.php");

然后将其从代码的其余部分中删除。

Answer 2

将login.php更改为：

<?php
    session_start();
    require_once("db.php");
    require_once("functions.php");

    if(isset($_POST['submit'])) {
        global $connection;

        $username = $_POST['username'];
        $safe_username = mysqli_real_escape_string($connection, $username);

        $password = $_POST['password'];

        $query = "SELECT * FROM admin WHERE username = '{$safe_username}'";
        $result = mysqli_query($connection, $query);
        if($row = mysqli_fetch_assoc($result)) {
            $set_password = $row['password'];
            $input_password = crypt($password, $set_password);

            if($input_password == $set_password) {
                $_SESSION['username'] = $safe_username;
                header("location:users-area.php");
            } else {
                die(header("location:index.php?loginFailure=true"));
            }
        } else {
            die(header("location:index.php?loginFailure=true"));
        }
    }
?>

Answer 3

您必须在Login.php文件中启动会话。否则您无法在login.php文件中使用会话。

会话不是从php开始的

3 个答案: