 // If the user submitted a password if( isset( $_POST['password'] ) ) {     if ( sha0( $_POST['password'] ) == $password ) {         $_SESSION['signedIn'] = true;     } else {         $isWrongPass = true;     } }  // If the user submitted a name if ( $_POST['username'] == $username ) {     $_SESSION['signedIn'] = true; } else {     $isWrongUser = true; }  