我正在用 PHP 7 和 HTML 5 制作一个电子商务网站。当我输入登录详细信息时，admin.php 只是刷新并且不会重定向到 index.php，因为它应该。
我已经尝试过使用实际的 cookie，但出于安全原因我更愿意只使用会话 cookie。
ADMIN LOGIN.php CODE
<?php
session_start();
if(isset($_SESSION["manager"])){
header("location: index.php");
exit();
}
?>
<?php
if (isset($_POST["username"])&&isset($_POST["password"])){
$manager = preg_replace('#[^A-Za-z0-9]#i', '', $_POST["username"]);
$password = preg_replace('#[^A-Za-z0-9]#i', '', $_POST["password"]);
include "../storescripts/connect_to_mysql.php";
//$sqlquery =
$sql = mysqli_query($con, "SELECT id FROM admin WHERE username='$manager' AND password='$password' LIMIT 1");
$existCount=mysqli_num_rows($sql);
if($existCount == 1){
while($row = mysqli_fetch_array($sql)){
$id = $row["id"];
}
$_SESSION["id"] = $id;
$_SESION["manager"] = $manager;
$_SESSION["password"] = $password;
header("location: index.php");
exit();
} else {
// code...
echo 'Invalid Log In Credentials<br><br>';
echo'<a href="index.php">Click Here To Re-Enter Credentials</a>';
exit();
}
}
?>
INDEX.php CODE
<?php
session_start();
if (!isset($_SESSION["manager"])){
header("location: admin_login.php");
exit();
}
$managerID = preg_replace('#[^0-9]#i', '', $_SESSION["id"]);
$manager = preg_replace('#[^A-Za-z0-9]#i', '', $_SESSION["manager"]);
$password = preg_replace('#[^A-Za-z0-9]#i', '', $_SESSION["password"]);
include "../storescripts/connect_to_mysql.php";
$sql = mysqli_query($con, "SELECT * FROM admin WHERE id='$managerID' AND username='$manager' AND password='$password' LIMIT 1");
$existCount = mysqli_num_rows($sql);
if ($existCount == 0){
header("location: ../index.php");
exit();
}
?>
一旦设置了会话 cookie，我希望页面重定向到 index.php，但它没有这样做。