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Custom Admin, Users | Type: PHPRedirect Users on Login Based on Role

This plugin allows redirection of users when they login, based on role.

<?php
/*
Plugin Name: Redirect Users by Role
Plugin URI:
Description: Redirects users based on role
Version: 1.0
Author: Evo Web Dev, Ray Gulick
Author URI: http://evowebdev.com
License: GPLv2 or later

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

function evo_redirect_users_by_role() {
    if ( ! defined( 'DOING_AJAX' ) ) {
        $current_user   = wp_get_current_user();
        $role_name      = $current_user->roles[0];
        if ( 'subscriber' === $role_name ) {
            wp_redirect( 'http://yoursite.com/dashboard' );
        }
    }
}
add_action( 'admin_init', 'evo_redirect_users_by_role' );
?>

Another approach:

function conditional_login_redirect( $redirect_to, $requested_redirect_to, $user ) {	
    if ( isset( $user->roles ) && is_array( $user->roles ) ) {	
	if ( in_array( 'subscriber', $user->roles ) ) {	
	return home_url(); // subscriber role redirected to homepage
	} else {		
	return $redirect_to; // other roles redirected to the original destination URL
	}
    }
    return $redirect_to;
}
add_filter( 'login_redirect', 'conditional_login_redirect', 10, 3 );