Wordpress: remove the "Dashboard" and redirect for non-admin user

gistfile1

/* Remove the "Dashboard" from the admin menu for non-admin users **********************************
** http://wordpress.stackexchange.com/questions/52752/hide-dashboard-from-non-admin-users ******* */	
/* !관리자 아닌 회원 알림판 제거 & 리다이렉트 *********************************************************** */
function custom_remove_dashboard () {
    global $current_user, $menu, $submenu;
    get_currentuserinfo();

    if( ! in_array( 'administrator', $current_user->roles ) ) {
        reset( $menu );
        $page = key( $menu );
        while( ( __( 'Dashboard' ) != $menu[$page][0] ) && next( $menu ) ) {
            $page = key( $menu );
        }
        if( __( 'Dashboard' ) == $menu[$page][0] ) {
            unset( $menu[$page] );
        }
        reset($menu);
        $page = key($menu);
        while ( ! $current_user->has_cap( $menu[$page][1] ) && next( $menu ) ) {
            $page = key( $menu );
        }
        if ( preg_match( '#wp-admin/?(index.php)?$#', $_SERVER['REQUEST_URI'] ) &&
            ( 'index.php' != $menu[$page][2] ) ) {
            	if (!current_user_can('subscriber')) {
	            	wp_redirect( get_option( 'siteurl' ) . '/wp-admin/edit.php');
            	} else {
	            	wp_redirect( get_option( 'siteurl' ) . '/wp-admin/profile.php');
            	}
        }
    }
}
add_action('admin_menu', 'custom_remove_dashboard');