wordpress redirect on login based on roles

gistfile1.aw

function fs_login($user, $pass) {
	$uname = $user;
	$pass1 = $pass;
	$credentials = array(
		'user_login' => $user,
		'user_password' => $pass,
		'remember' => true
	);
	$user = wp_signon($credentials, false);
	if( $user->ID ){
		update_user_meta($user->ID, '_last_loggedin', $_SERVER['REMOTE_ADDR']);
		foreach($user->roles as $role){
			if($role == "Stringer" ){
				//	redirect to stringer page
			}else if($role == "Media" ){
				//	redirect to media page
			}else{
				//	redirect to general page			
			}
	}
	return null;
}

not working for me