ไม่แน่ใจว่าทำตรงไหนผิดคะ ถ้าค่าส่งมาเท่ากับ 0 แล้วมันไม่วิ่งไปที่หน้า admin_page.php คะ
<?php
// Initialize the session
session_start();
// Check if the user is already logged in, if yes then redirect him to dashboard page
// if(isset($_SESSION["loggedin"]) && $_SESSION["loggedin"] === true){
// header("location: welcome.php");
// exit;
// }
// Include config file
require_once "inc/config.php";
// Define variables and initialize with empty values
$email = $password = "";
$email_err = $password_err = "";
// Processing form data when form is submitted
if($_SERVER["REQUEST_METHOD"] == "POST"){
// Check if email is empty
if(empty(trim($_POST["email"]))){
$email_err = "Please enter email.";
} else{
$email = trim($_POST["email"]);
}
// Check if password is empty
if(empty(trim($_POST["password"]))){
$password_err = "Please enter your password.";
} else{
$password = trim($_POST["password"]);
}
// Validate credentials
if(empty($email_err) && empty($password_err)){
// Prepare a select statement
$sql = "SELECT id, email, level, password FROM users WHERE email = ?";
if($stmt = mysqli_prepare($link, $sql)){
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "s", $param_email);
// Set parameters
$param_email = $email;
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
// Store result
mysqli_stmt_store_result($stmt);
// Check if email exists, if yes then verify password
if(mysqli_stmt_num_rows($stmt) == 1){
// Bind result variables
mysqli_stmt_bind_result($stmt, $id, $email, $level, $hashed_password);
if(mysqli_stmt_fetch($stmt)){
if(password_verify($password, $hashed_password)){
// Password is correct, so start a new session
session_start();
// Store data in session variables
$_SESSION["loggedin"] = true;
$_SESSION["id"] = $id;
$_SESSION["email"] = $email;
$_SESSION["level"] = $level;
//echo ("$level"); die();
if($_SESSION["$level"]=="0"){
Header("location: admin_page.php");
}
// Redirect user to dashboard page
header("location: dashboard.php");
} else{
// Display an error message if password is not valid
$password_err = "The password you entered was not valid.";
}
}
} else{
// Display an error message if email doesn't exist
$email_err = "No account found with that email.";
}
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
}
// Close connection
mysqli_close($link);
}
?>