Help with $var['var'] type of variable.

How do you get the "variable" from inside this?

Say you have

$user['keldorn'] = "81dc9bdb52d04dc20036dbd8313ed055";

PHP:

I know how to get the md5 string. Simply

$var = $user['keldorn'];

PHP:

But what if you do this?

$var = $user[$username];

PHP:

Nothing happens. How do you extract the $username from inside that?

I'm trying to do this comparing from a $_POST of username and password:

if ( isset($user[$username]) && $user[$username] == md5($password) ) {
   // stuff
}

PHP:

EDIT: Never mind. The answer just hit me like a ton of bricks. How embarrassing.

$user['keldorn'] = "81dc9bdb52d04dc20036dbd8313ed055";
    if(!empty($_POST)) {
        $username =  $_POST['adminUsername'];
        $password  = $_POST['adminPassword'];

            if ( isset($user[$username]) && $user[$username] == md5($password) ) {
			
			echo "logged in";
			exit;
			
			
			
			
			
			}

			
			
	}

PHP:

 

Don't worry about it, everyone starts somewhere, I made a lot of mistakes like this but I suggest reading a good book, it will make your life a lot easier and saves you tons of time and money.

I suggest 'PHP & MySQL Web Development' by Luke Welling and Laura Thomson, it's an excellent beginner book and trust me you won't regret it