subscribers_functions

/**
 * Remove dashboard access from subscribers
 * @global type $wp_admin_bar
 * @global type $wpdb
 * @return type
 * @version 1, 9/2/2015
 */
function ls_remove_dashboard_access_from_subscribers() {
    global $wp_admin_bar, $wpdb;
    // Don't show for logged out users or single site mode.
    if ( ! is_user_logged_in() || ! is_multisite() )
	return;
    foreach ( ( array ) $wp_admin_bar->user->blogs as $blog ) {
	$menu_id = 'blog-' . $blog->userblog_id . '-d';
	switch_to_blog( $blog->userblog_id );
	if ( ! (current_user_can( get_post_type_object( 'post' )->cap->create_posts )) ) {
	    $wp_admin_bar->remove_menu( $menu_id );
	    $wp_admin_bar->remove_menu( 'site-name' );
	}
	restore_current_blog();
    }
}
add_action( 'wp_before_admin_bar_render', 'ls_remove_dashboard_access_from_subscribers' );


/**
 * Remove mysites dashboard link to site subscribers
 * @global type $user_blog
 * @param type $blog_actions
 * @return string
 */
function ls_remove_mysites_dashboard_from_subscribers( $blog_actions ) {
    global $user_blog;
    switch_to_blog( $user_blog->userblog_id );
    if ( ! (current_user_can( get_post_type_object( 'post' )->cap->create_posts )) ) {
	$actions = "<a href='" . esc_url( get_home_url( $user_blog->userblog_id ) ) . "'>" . __( 'Visit' ) . "</a>";
    } else {
	$actions = "<a href='" . esc_url( get_home_url( $user_blog->userblog_id ) ) . "'>" . __( 'Visit' ) . "</a> | <a href='" . esc_url( get_admin_url( $user_blog->userblog_id ) ) . "'>" . __( 'Dashboard' ) . "</a>";
    }
    restore_current_blog();
    return $actions;
}
add_filter( 'myblogs_blog_actions', 'ls_remove_mysites_dashboard_from_subscribers' );

/**
 * Disable wp-admin access to subscribers - Redirect them back to site
 *@version 2, 11/2/2014
 */
function ls_redirect_wpadmin_from_subscribers() {
    if ( ! (current_user_can( get_post_type_object( 'post' )->cap->create_posts )) && ( ! defined( 'DOING_AJAX' ) || ! DOING_AJAX ) ) {
	wp_redirect( site_url() );
	exit;
    }
}

add_action( 'admin_init', 'ls_redirect_wpadmin_from_subscribers' );