/home/bonphmya/mercandestockages.store/wp-content/plugins/jetpack/modules/canonical-urls.php
<?php
/**
* Module Name: Canonical URLs
* Module Description: Add canonical URL tags to archive pages to prevent duplicate content in search engines.
* Sort Order: 36
* First Introduced: 15.6
* Requires Connection: No
* Requires User Connection: No
* Auto Activate: No
* Module Tags: Traffic
* Feature: Traffic
* Additional Search Queries: canonical, seo, duplicate content, woocommerce, archive
*
* @package automattic/jetpack
*/
if ( ! defined( 'ABSPATH' ) ) {
exit( 0 );
}
// Disable canonical URL output when a conflicting SEO plugin is active.
add_filter( 'jetpack_disable_canonical_urls', 'jetpack_canonical_urls_check_conflicts' );
/**
* Can be used to prevent the Canonical URLs module from outputting canonical tags.
*
* @module canonical-urls
*
* @since 15.6
*
* @param bool $disabled Whether canonical URL output is disabled. Defaults to false.
*/
if ( ! apply_filters( 'jetpack_disable_canonical_urls', false ) ) {
require_once __DIR__ . '/canonical-urls/class-jetpack-canonical-urls-resolver.php';
add_action( 'wp_head', 'jetpack_canonical_urls_output_tag' );
}
/**
* Check if a conflicting SEO plugin is active and disable canonical URL output.
*
* @since 15.6
*
* @param bool $disabled Whether canonical URL output is already disabled.
* @return bool Whether canonical URL output should be disabled.
*/
function jetpack_canonical_urls_check_conflicts( $disabled ) {
if ( $disabled ) {
return $disabled;
}
$conflicting_plugins = array(
'wordpress-seo/wp-seo.php',
'wordpress-seo-premium/wp-seo-premium.php',
'all-in-one-seo-pack/all_in_one_seo_pack.php',
'all-in-one-seo-pack-pro/all_in_one_seo_pack.php',
'seo-by-rank-math/rank-math.php',
'autodescription/autodescription.php',
'slim-seo/slim-seo.php',
'wp-seopress/seopress.php',
'wp-seopress-pro/seopress-pro.php',
'seo-key/seo-key.php',
'seo-key-pro/seo-key.php',
);
foreach ( $conflicting_plugins as $plugin ) {
if ( Jetpack::is_plugin_active( $plugin ) ) {
return true;
}
}
return $disabled;
}
/**
* Output the canonical link tag for non-singular pages.
*
* WordPress core handles singular posts/pages via rel_canonical(),
* so this function only outputs canonical tags for archive pages.
*
* @since 15.6
*/
function jetpack_canonical_urls_output_tag() {
if ( is_singular() ) {
return;
}
$url = Jetpack_Canonical_Urls_Resolver::get_canonical_url();
if ( ! empty( $url ) ) {
echo '<link rel="canonical" href="' . esc_url( $url ) . '" />' . "\n";
}
}