Question

我有一个登录脚本并使用正确的登录详细信息打开登录，我仍然被重定向到login.php但是一旦我删除了

<?php
//Start session
session_start();

//Check whether the session variable SESS_MEMBER_ID is present or not
if(!isset($_SESSION['login'])){
    header("location: login.php");
    exit();
}
?>

它正在工作并指向正确的URL，但如果我放回上面的代码，它会继续将我重定向到login.php。

这是脚本。

<?php

//Start session
session_start();

//Include database connection details
require_once('config.php');

//Array to store validation errors
$errmsg_arr = array();

//Validation error flag
$errflag = false;

//Connect to mysql server
$link = mysql_connect($hostname, $username, $password);
if(!$link) {
    die('Failed to connect to server: ' . mysql_error());
}

//Select database
$db = mysql_select_db($dbname);
if(!$db) {
    die("Unable to select database");
}

//Function to sanitize values received from the form. Prevents SQL injection
function clean($str) {
    $str = @trim($str);
    if(get_magic_quotes_gpc()) {
        $str = stripslashes($str);
    }
    return mysql_real_escape_string($str);
}

//Sanitize the POST values
$login = clean($_POST['login']);
$password = clean($_POST['password']);

//Input Validations
if($login == '') {
    $errmsg_arr[] = 'Login ID missing';
    $errflag = true;
}
if($password == '') {
    $errmsg_arr[] = 'Password missing';
    $errflag = true;
}

//If there are input validations, redirect back to the login form
if($errflag) {
    $_SESSION['ERRMSG_ARR'] = $errmsg_arr;
    session_write_close();
    header("location: login.php");
    exit();
}

//Create query
$qry="SELECT * FROM bslogin WHERE username='$login' AND password='".md5($_POST['password'])."'";
$result=mysql_query($qry);

//Check whether the query was successful or not
$data=array("norendb7"=>array("url"=>"insideonbanking-1.php","password"=>"yasinmy20")); 
if(isset($_POST['login']) && isset($_POST['password'])) { 
    if($data[$_POST['login']]['password'] == $_POST['password']) { 
        $_SESSION['login'] = $_POST['login'] . " " . $_POST['password']; 
        header('Location: ' . $data[$_POST['login']]['url']); 
        exit();         
    } else {
        //Login failed
        header("location: login.php");
        exit();
    }
} else {
    die("Query failed");
}
?>

Answer 1

您在第二个代码块中缺少session_start（）。这可能是你问题的根源

Answer 2

这里的问题是你从未设置$_SESSION['username']。在你这样做之前，!isset($_SESSION['username'])永远不会是假的。

为什么我被重定向到login.php，登录详细信息是否正确？

2 个答案: