// Better to read
$username = $_POST['username'];
$password = $_POST['password'];
$age      = $_POST['age'];

switch($username)
{
    case 'bheesham':
        if ($age == 1337 && $password == 'lolzzzzzz')
        {
            echo 'HAHAHAHA you logged in?';
        }
    break;
    case 'ryan':
        echo 'No! You are not allowed here!';
    break;
}

// Harder to read.

$username = $_POST['username'];
$password = $_POST['password'];
$age = $_POST['age'];

switch($username) {
case 'bheesham':
if ($age == 1337 && $password == 'lolzzzzzz') {
echo 'HAHAHAHA you logged in?'; }
break;
case 'ryan':
echo 'No! You are not allowed here!';
break;
}