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I'm writing a script for login system for my project. I thought I am correct in coding this, but it gives me problem. And the problem is that it does not allow to log me in and redirects to login.php page. Below is the code;


$tabName = "adminuser";
$userName = $_POST['userName'];
$password = $_POST['password'];
    header('location: login.php');
$userName = stripslashes($userName);
$password = stripslashes($password);
$userName = mysql_real_escape_string($userName);
$password = md5(mysql_real_escape_string($password));

$sqlQuery = "SELECT * FROM $tabName WHERE userName = '".$userName."' 
             AND password = '".$password."' LIMIT 1";
$sqlExe = mysql_query($sqlQuery);

$count = mysql_num_rows($sqlExe);

if($count > 0){
    header('location: index.php');
    $_SESSION['auth'] = 1;
    echo "Wrong Username or Password <br />".
    '<a href="login.php">Go back...</a>';

Here is seesion code on "index.php" page


if(!isset($_SESSION['auth']) or $_SESSION['auth'] != 1){
    header('location: login.php');

Please correct me and let me know where im wrong. And please also tell me that, Is my code is sql injection safe?

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Best answer

Your code looks OK to me. The only thing is missing from your code.

you need this line after the <?php session_start();

This then should work.

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