Simple login returning blank page

Question

I\'m learning PHP and I have made a simple login script but the problem is that it only redirects me to a blank page. It\'s meant to redirect to index.php if user credentials ar

Answer 1

First of all the name of your submit button is "submit". And you are checking if the "login" is post or not.

if(isset($_POST['login']))
{

it should have been:

if(isset($_POST['submit']))
{

You have written :

if($user || $password != NULL)
{

it should have been:

if($user != NULL || $password != NULL)
{

You have used mysqli and mysql command which is not a good practice

$result=mysqli_query($sql);

    $row=mysql_fetch_array($result);

Instead of

if($row['user'] == $user && $row['password'] == $password)
    {
//this code again check for condition which is already checked in the sql statement

it is better practice to write :

if($row->num_rows==1)
    {

in index.php you have written

if(!isset($_SESSION["loggedIn"])){

it should have been

if(!isset($_SESSION["loggedin"])){

since you have stored the lowercase index while storing into session.