Checking if Username and Password is match or available - Jquery

Question

I\'m having a problem on my code which the username and password does not match. Here is my output. When the username and password is not match, then it will give a message that

Answer 1

Notes

• You are wide open to SQL injection. You should be using prepared statements instead. Please read How can I prevent SQL injection in PHP?
• You should not store passwords in plain text. Instead, use PHP's password_hash and password_verify functions to hash and verify.

Answer

You are using isset incorrectly. To check that multiple values are set, separate them by commas, not with &&:

if(isset($_POST["user_name"], $_POST["password"]))

Your PHP code as it currently stands won't produce any output as it will terminate with a fatal error on that line.

In your jQuery, you're not specifying multiple selectors correctly. They should all be inside the same set of quotes:

$('#username, #password').blur(function(){

You also need to change this code, which will set both username and password values to the same thing:

var username = $(this).val();
var password = $(this).val();

to

var username = $('#username').val();
var password = $('#password').val();