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options = $options;
}
/**
* Array of events this subscriber listens to
*
* @return array
*/
public static function get_subscribed_events() {
return [
'rocket_sitemap_preload_list' => [ 'add_sitemap', 15 ],
];
}
/**
* Add Yoast SEO sitemap URL to the sitemaps to preload
*
* @since 2.8
*
* @param array $sitemaps An array of sitemaps to preload.
*
* @return array
*/
public function add_sitemap( $sitemaps ): array {
if ( ! is_array( $sitemaps ) ) {
$sitemaps = (array) $sitemaps;
}
if ( ! $this->is_sitemap_enabled() ) {
return $sitemaps;
}
if ( ! class_exists( 'WPSEO_Sitemaps_Router' ) ) {
return $sitemaps;
}
$sitemaps[] = \WPSEO_Sitemaps_Router::get_base_url( 'sitemap_index.xml' );
return $sitemaps;
}
/**
* Checks if sitemap is enabled in Yoast SEO
*
* @since 3.11.1
*
* @return bool
*/
private function is_sitemap_enabled(): bool {
static $enabled = null;
if ( ! is_null( $enabled ) ) {
return $enabled;
}
if ( ! rocket_has_constant( 'WPSEO_VERSION' ) ) {
$enabled = false;
return $enabled;
}