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