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448 lines
12 KiB
PHTML
448 lines
12 KiB
PHTML
8 months ago
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<?php
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/**
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* The <head> tag.
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*
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* @since 0.9.0
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* @package RankMath
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* @subpackage RankMath\Frontend
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* @author Rank Math <support@rankmath.com>
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*/
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namespace RankMath\Frontend;
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use RankMath\Post;
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use RankMath\Helper;
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use RankMath\Paper\Paper;
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use RankMath\Traits\Hooker;
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use RankMath\Sitemap\Router;
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use RankMath\Helpers\Str;
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use RankMath\Helpers\Arr;
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use RankMath\Helpers\Security;
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defined( 'ABSPATH' ) || exit;
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/**
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* Head class.
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*
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* @copyright Copyright (C) 2008-2019, Yoast BV
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* The following code is a derivative work of the code from the Yoast(https://github.com/Yoast/wordpress-seo/), which is licensed under GPL v3.
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*/
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class Head {
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use Hooker;
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/**
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* The Constructor.
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*/
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public function __construct() {
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$this->action( 'wp_head', 'head', 1 );
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if ( Helper::is_amp_active() ) {
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$this->action( 'amphtml_template_head', 'head', 1 );
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$this->action( 'weeblramp_print_meta_data', 'head', 1 );
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$this->action( 'better-amp/template/head', 'head', 99 );
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$this->action( 'amp_post_template_head', 'head', 9 );
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remove_action( 'better-amp/template/head', 'better_amp_print_rel_canonical' );
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}
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$this->action( 'wp_head', 'front_page_init', 0 );
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$this->filter( 'language_attributes', 'search_results_schema' );
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$this->action( 'rank_math/head', 'metadesc', 6 );
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$this->action( 'rank_math/head', 'robots', 10 );
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$this->action( 'rank_math/head', 'canonical', 20 );
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$this->action( 'rank_math/head', 'adjacent_rel_links', 21 );
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$this->action( 'rank_math/head', 'metakeywords', 22 );
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$this->filter( 'wp_title', 'title', 15 );
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$this->filter( 'thematic_doctitle', 'title', 15 );
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$this->filter( 'pre_get_document_title', 'title', 15 );
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// Code to move title inside the Rank Math's meta.
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remove_action( 'wp_head', '_wp_render_title_tag', 1 );
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add_action( 'rank_math/head', '_wp_render_title_tag', 1 );
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// Force Rewrite title.
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if ( Helper::get_settings( 'titles.rewrite_title' ) && ! current_theme_supports( 'title-tag' ) ) {
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$this->action( 'get_header', 'start_ob', 0 );
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$this->action( 'wp_head', 'rewrite_title', 9999 );
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}
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// Remove core robots data.
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if ( ! is_embed() ) {
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remove_all_filters( 'wp_robots' );
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}
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}
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/**
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* Initialize front page related stuff.
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*/
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public function front_page_init() {
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if ( ! is_front_page() ) {
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return;
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}
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$this->action( 'rank_math/head', 'webmaster_tools_authentication', 90 );
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}
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/**
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* Output authentication codes for all the Webmaster Tools.
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*/
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public function webmaster_tools_authentication() {
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$tools = [
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'google_verify' => 'google-site-verification',
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'bing_verify' => 'msvalidate.01',
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'baidu_verify' => 'baidu-site-verification',
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'yandex_verify' => 'yandex-verification',
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'pinterest_verify' => 'p:domain_verify',
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'norton_verify' => 'norton-safeweb-site-verification',
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];
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foreach ( $tools as $id => $name ) {
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$content = trim( Helper::get_settings( "general.{$id}" ) );
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$content = $this->do_filter( 'webmaster/' . $id, $content );
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if ( empty( $content ) ) {
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continue;
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}
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printf( '<meta name="%1$s" content="%2$s" />' . "\n", esc_attr( $name ), esc_attr( $content ) );
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}
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$custom_webmaster_tags = Helper::get_settings( 'general.custom_webmaster_tags' );
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if ( empty( $custom_webmaster_tags ) ) {
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return;
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}
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$custom_webmaster_tags = Arr::from_string( $custom_webmaster_tags );
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foreach ( $custom_webmaster_tags as $custom_webmaster_tag ) {
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$custom_webmaster_tag = trim( $custom_webmaster_tag );
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if ( empty( $custom_webmaster_tag ) ) {
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continue;
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}
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echo $custom_webmaster_tag . "\n";
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}
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}
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/**
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* Add Search Result Page schema as language attributes for the <html> tag.
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*
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* @param string $output A space-separated list of language attributes.
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* @return string
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*/
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public function search_results_schema( $output ) {
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if ( ! is_search() ) {
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return $output;
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}
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return preg_replace( '/itemtype="([^"]+)"/', 'itemtype="https://schema.org/SearchResultsPage', $output );
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}
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/**
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* Main function attached to the wp_head hook.
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*/
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public function head() {
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global $wp_query;
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$old_wp_query = null;
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if ( ! $wp_query->is_main_query() ) {
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$old_wp_query = $wp_query;
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wp_reset_query();
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}
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$this->credits();
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// Remove core actions, now handled by Rank Math.
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remove_action( 'wp_head', 'rel_canonical' );
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remove_action( 'wp_head', 'index_rel_link' );
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remove_action( 'wp_head', 'start_post_rel_link' );
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remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head' );
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remove_action( 'wp_head', 'noindex', 1 );
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if ( Helper::is_amp_active() ) {
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remove_action( 'amp_post_template_head', 'amp_post_template_add_title' );
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remove_action( 'amp_post_template_head', 'amp_post_template_add_canonical' );
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remove_action( 'amp_post_template_head', 'amp_print_schemaorg_metadata' );
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}
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/**
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* Add extra output in the head tag.
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*/
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$this->do_action( 'head' );
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$this->credits( true );
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if ( ! empty( $old_wp_query ) ) {
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$GLOBALS['wp_query'] = $old_wp_query;
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unset( $old_wp_query );
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}
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}
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/**
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* Main title function.
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*
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* @param string $title Already set title or empty string.
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* @return string
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*/
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public function title( $title ) {
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if ( is_feed() ) {
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return $title;
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}
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$generated = Paper::get()->get_title();
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return Str::is_non_empty( $generated ) ? $generated : $title;
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}
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/**
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* Output the meta description tag with the generated description.
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*/
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public function metadesc() {
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$generated = Paper::get()->get_description();
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if ( Str::is_non_empty( $generated ) ) {
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echo '<meta name="description" content="' . $generated . '"/>', "\n";
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}
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}
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/**
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* Output the meta robots tag.
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*/
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public function robots() {
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$robots = Paper::get()->get_robots();
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$robotsstr = join( ', ', $robots );
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if ( Str::is_non_empty( $robotsstr ) ) {
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echo '<meta name="robots" content="', esc_attr( $robotsstr ), '"/>', "\n";
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}
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// If a page is noindex, let's remove the canonical URL.
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// https://www.seroundtable.com/google-noindex-rel-canonical-confusion-26079.html .
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if ( isset( $robots['index'] ) && 'noindex' === $robots['index'] ) {
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$this->remove_action( 'rank_math/head', 'canonical', 20 );
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$this->remove_action( 'rank_math/head', 'adjacent_rel_links', 21 );
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}
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}
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/**
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* Output the canonical URL tag.
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*/
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public function canonical() {
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$canonical = Paper::get()->get_canonical();
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if ( Str::is_non_empty( $canonical ) ) {
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echo '<link rel="canonical" href="' . esc_url( $canonical, null, 'other' ) . '" />' . "\n";
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}
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}
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/**
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* Add the rel 'prev' and 'next' links to archives or single posts.
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*
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* @link http://googlewebmastercentral.blogspot.com/2011/09/pagination-with-relnext-and-relprev.html
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*/
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public function adjacent_rel_links() {
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/**
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* Enable rel "next" & "prev" tags on sites running Genesis.
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*
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* @param bool $unsigned Whether or not to show rel next / prev .
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*/
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if ( is_home() && function_exists( 'genesis' ) && false === $this->do_filter( 'frontend/genesis/force_adjacent_rel_home', false ) ) {
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return;
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}
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/**
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* Disable rel 'prev' and 'next' links.
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*
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* @param bool $disable Rel 'prev' and 'next' links should be disabled or not.
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*/
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if ( true === $this->do_filter( 'frontend/disable_adjacent_rel_links', false ) ) {
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return;
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}
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if ( is_singular() ) {
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$this->adjacent_rel_links_single();
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return;
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}
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$this->adjacent_rel_links_archive();
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}
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/**
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* Output the meta keywords value.
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*/
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public function metakeywords() {
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/**
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* Passing a truthy value to the filter will effectively short-circuit the
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* set keywords process.
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*
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* @param bool $return Short-circuit return value. Either false or true.
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*/
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if ( ! $this->do_filter( 'frontend/show_keywords', false ) ) {
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return;
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}
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$keywords = Paper::get()->get_keywords();
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if ( Str::is_non_empty( $keywords ) ) {
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echo '<meta name="keywords" content="', esc_attr( $keywords ), '"/>', "\n";
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}
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}
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/**
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* Output the rel next/prev tags on a paginated single post.
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*
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* @return void
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*/
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private function adjacent_rel_links_single() {
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$num_pages = 1;
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$queried_object = get_queried_object();
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if ( ! empty( $queried_object ) ) {
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$num_pages = substr_count( $queried_object->post_content, '<!--nextpage-->' ) + 1;
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}
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if ( 1 === $num_pages ) {
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return;
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}
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$page = max( 1, (int) get_query_var( 'page' ) );
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$url = get_permalink( get_queried_object_id() );
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if ( $page > 1 ) {
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$this->adjacent_rel_link( 'prev', $url, $page - 1, 'page' );
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}
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if ( $page < $num_pages ) {
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$this->adjacent_rel_link( 'next', $url, $page + 1, 'page' );
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}
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}
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/**
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* Output the rel next/prev tags on archives.
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*/
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private function adjacent_rel_links_archive() {
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$url = Paper::get()->get_canonical( true, true );
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if ( ! is_string( $url ) || '' === $url ) {
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return;
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}
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$paged = max( 1, (int) get_query_var( 'paged' ) );
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if ( 2 === $paged ) {
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$this->adjacent_rel_link( 'prev', $url, $paged - 1 );
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}
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if ( is_front_page() ) {
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$url = Router::get_base_url( '' );
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}
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if ( $paged > 2 ) {
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$this->adjacent_rel_link( 'prev', $url, $paged - 1 );
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}
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if ( $paged < $GLOBALS['wp_query']->max_num_pages ) {
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$this->adjacent_rel_link( 'next', $url, $paged + 1 );
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}
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}
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/**
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* Build adjacent page link for archives.
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*
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* @param string $rel Prev or next.
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* @param string $url The current archive URL without page parameter.
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* @param string $page The page number added to the $url in the link tag.
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* @param string $query_arg The pagination query argument to use for the $url.
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*/
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private function adjacent_rel_link( $rel, $url, $page, $query_arg = 'paged' ) {
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global $wp_rewrite;
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if ( $page > 1 ) {
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$url = ! $wp_rewrite->using_permalinks() ? Security::add_query_arg_raw( $query_arg, $page, $url ) : user_trailingslashit( trailingslashit( $url ) . $this->get_pagination_base() . $page );
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}
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/**
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* Change the link rel HTML output.
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*
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* @param string $link The `<link rel=""` tag.
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*/
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$link = $this->do_filter( "frontend/{$rel}_rel_link", '<link rel="' . esc_attr( $rel ) . '" href="' . esc_url( $url ) . "\" />\n" );
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if ( Str::is_non_empty( $link ) ) {
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echo $link;
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}
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}
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/**
|
||
|
|
* Get pagination base.
|
||
|
|
*
|
||
|
|
* @return string The pagination base.
|
||
|
|
*/
|
||
|
|
private function get_pagination_base() {
|
||
|
|
global $wp_rewrite;
|
||
|
|
|
||
|
|
return ( ! is_singular() || Post::is_home_static_page() ) ? trailingslashit( $wp_rewrite->pagination_base ) : '';
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Credits.
|
||
|
|
*
|
||
|
|
* @param boolean $closing Is closing credits needed.
|
||
|
|
*/
|
||
|
|
private function credits( $closing = false ) {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Disable credit in the HTML source.
|
||
|
|
*
|
||
|
|
* @param bool $remove
|
||
|
|
*/
|
||
|
|
if ( $this->do_filter( 'frontend/remove_credit_notice', false ) ) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( false === $closing ) {
|
||
|
|
if ( ! Helper::is_whitelabel() && ! defined( 'RANK_MATH_PRO_FILE' ) ) {
|
||
|
|
echo "\n<!-- " . esc_html__( 'Search Engine Optimization by Rank Math - https://rankmath.com/', 'rank-math' ) . " -->\n";
|
||
|
|
} elseif ( defined( 'RANK_MATH_PRO_FILE' ) ) {
|
||
|
|
echo "\n<!-- " . esc_html__( 'Search Engine Optimization by Rank Math PRO - https://rankmath.com/', 'rank-math' ) . " -->\n";
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ! Helper::is_whitelabel() ) {
|
||
|
|
echo '<!-- /' . esc_html__( 'Rank Math WordPress SEO plugin', 'rank-math' ) . " -->\n\n";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Start the Output Buffer.
|
||
|
|
*
|
||
|
|
* @since 1.0.29
|
||
|
|
*/
|
||
|
|
public function start_ob() {
|
||
|
|
ob_start();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Use output buffering to force rewrite the title tag.
|
||
|
|
*/
|
||
|
|
public function rewrite_title() {
|
||
|
|
global $wp_query;
|
||
|
|
|
||
|
|
// Check if we're in the main query.
|
||
|
|
$old_wp_query = null;
|
||
|
|
if ( ! $wp_query->is_main_query() ) {
|
||
|
|
$old_wp_query = $wp_query;
|
||
|
|
wp_reset_query();
|
||
|
|
}
|
||
|
|
|
||
|
|
$content = ob_get_clean();
|
||
|
|
$title = Paper::get()->get_title();
|
||
|
|
if ( empty( $title ) ) {
|
||
|
|
echo $content;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Find all title tags, remove them, and add the new one.
|
||
|
|
$content = preg_replace( '/<title.*?\/title>/i', '', $content );
|
||
|
|
$content = str_replace( '<head>', '<head>' . "\n" . '<title>' . esc_html( $title ) . '</title>', $content );
|
||
|
|
if ( ! empty( $old_wp_query ) ) {
|
||
|
|
$GLOBALS['wp_query'] = $old_wp_query;
|
||
|
|
}
|
||
|
|
|
||
|
|
echo $content;
|
||
|
|
}
|
||
|
|
}
|