public static function _add_icon( $title, $id ) {
		$meta = Menu_Icons_Meta::get( $id );
		$icon = self::get_icon( $meta );

		if ( empty( $icon ) ) {
			return $title;
		}

		$title_class   = ! empty( $meta['hide_label'] ) ? self::$hidden_label_class : '';
		$title_wrapped = sprintf(
			'<span%s>%s</span>',
			( ! empty( $title_class ) ) ? sprintf( ' class="%s"', esc_attr( $title_class ) ) : '',
			$title
		);

		if ( 'after' === $meta['position'] ) {
			$title_with_icon = "{$title_wrapped}{$icon}";
		} else {
			$title_with_icon = "{$icon}{$title_wrapped}";
		}

		/**
		 * Allow plugins/themes to override menu item markup
		 *
		 * @since 0.8.0
		 *
		 * @param string  $title_with_icon Menu item markup after the icon is added.
		 * @param integer $id              Menu item ID.
		 * @param array   $meta            Menu item metadata values.
		 * @param string  $title           Original menu item title.
		 *
		 * @return string
		 */
		$title_with_icon = apply_filters( 'menu_icons_item_title', $title_with_icon, $id, $meta, $title );

		return $title_with_icon;
	}
public static function _add_icon( $title, $id ) {
		$meta = Menu_Icons_Meta::get( $id );
		$icon = self::get_icon( $meta );

		if ( empty( $icon ) ) {
			return $title;
		}

		$title_class   = ! empty( $meta['hide_label'] ) ? self::$hidden_label_class : '';
		$title_wrapped = sprintf(
			'<span%s>%s</span>',
			( ! empty( $title_class ) ) ? sprintf( ' class="%s"', esc_attr( $title_class ) ) : '',
			$title
		);

		if ( 'after' === $meta['position'] ) {
			$title_with_icon = "{$title_wrapped}{$icon}";
		} else {
			$title_with_icon = "{$icon}{$title_wrapped}";
		}

		/**
		 * Allow plugins/themes to override menu item markup
		 *
		 * @since 0.8.0
		 *
		 * @param string  $title_with_icon Menu item markup after the icon is added.
		 * @param integer $id              Menu item ID.
		 * @param array   $meta            Menu item metadata values.
		 * @param string  $title           Original menu item title.
		 *
		 * @return string
		 */
		$title_with_icon = apply_filters( 'menu_icons_item_title', $title_with_icon, $id, $meta, $title );

		return $title_with_icon;
	}
public static function _add_icon ( $ title , $ id ) { $ meta = Menu_Icons_Meta :: get ( $ id ) ; $ icon = self :: get_icon ( $ meta ) ; if ( empty ( $ icon ) ) { return $ title ; } $ title_class = ! empty ( $ meta [ 'hide_label' ] ) ? self :: $ hidden_label_class : '' ; $ title_wrapped = sprintf ( '<span%s>%s</span>' , ( ! empty ( $ title_class ) ) ? sprintf ( ' class="%s"' , esc_attr ( $ title_class ) ) : '' , $ title ) ; if ( 'after' === $ meta [ 'position' ] ) { $ title_with_icon = "{$title_wrapped}{$icon}" ; } else { $ title_with_icon = "{$icon}{$title_wrapped}" ; } /**
		 * Allow plugins/themes to override menu item markup
		 *
		 * @since 0.8.0
		 *
		 * @param string  $title_with_icon Menu item markup after the icon is added.
		 * @param integer $id              Menu item ID.
		 * @param array   $meta            Menu item metadata values.
		 * @param string  $title           Original menu item title.
		 *
		 * @return string
		 */ $ title_with_icon = apply_filters ( 'menu_icons_item_title' , $ title_with_icon , $ id , $ meta , $ title ) ; return $ title_with_icon ; }
Add icon to menu item title

@since   0.1.0
@since   0.9.0   Renamed the method to `add_icon()`.
@wp_hook filter  the_title
@param   string  $title     Menu item title.
@param   int     $id        Menu item ID.

@return string
Add icon to menu item title