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class-wp-sitemaps-index.php (1985B)

      1 <?php
      2 /**
      3  * Sitemaps: WP_Sitemaps_Index class.
      4  *
      5  * Generates the sitemap index.
      6  *
      7  * @package WordPress
      8  * @subpackage Sitemaps
      9  * @since 5.5.0
     10  */
     11 
     12 /**
     13  * Class WP_Sitemaps_Index.
     14  * Builds the sitemap index page that lists the links to all of the sitemaps.
     15  *
     16  * @since 5.5.0
     17  */
     18 class WP_Sitemaps_Index {
     19 	/**
     20 	 * The main registry of supported sitemaps.
     21 	 *
     22 	 * @since 5.5.0
     23 	 * @var WP_Sitemaps_Registry
     24 	 */
     25 	protected $registry;
     26 
     27 	/**
     28 	 * Maximum number of sitemaps to include in an index.
     29 	 *
     30 	 * @sincee 5.5.0
     31 	 *
     32 	 * @var int Maximum number of sitemaps.
     33 	 */
     34 	private $max_sitemaps = 50000;
     35 
     36 	/**
     37 	 * WP_Sitemaps_Index constructor.
     38 	 *
     39 	 * @since 5.5.0
     40 	 *
     41 	 * @param WP_Sitemaps_Registry $registry Sitemap provider registry.
     42 	 */
     43 	public function __construct( WP_Sitemaps_Registry $registry ) {
     44 		$this->registry = $registry;
     45 	}
     46 
     47 	/**
     48 	 * Gets a sitemap list for the index.
     49 	 *
     50 	 * @since 5.5.0
     51 	 *
     52 	 * @return array[] Array of all sitemaps.
     53 	 */
     54 	public function get_sitemap_list() {
     55 		$sitemaps = array();
     56 
     57 		$providers = $this->registry->get_providers();
     58 		/* @var WP_Sitemaps_Provider $provider */
     59 		foreach ( $providers as $name => $provider ) {
     60 			$sitemap_entries = $provider->get_sitemap_entries();
     61 
     62 			// Prevent issues with array_push and empty arrays on PHP < 7.3.
     63 			if ( ! $sitemap_entries ) {
     64 				continue;
     65 			}
     66 
     67 			// Using array_push is more efficient than array_merge in a loop.
     68 			array_push( $sitemaps, ...$sitemap_entries );
     69 			if ( count( $sitemaps ) >= $this->max_sitemaps ) {
     70 				break;
     71 			}
     72 		}
     73 
     74 		return array_slice( $sitemaps, 0, $this->max_sitemaps, true );
     75 	}
     76 
     77 	/**
     78 	 * Builds the URL for the sitemap index.
     79 	 *
     80 	 * @since 5.5.0
     81 	 *
     82 	 * @global WP_Rewrite $wp_rewrite WordPress rewrite component.
     83 	 *
     84 	 * @return string The sitemap index URL.
     85 	 */
     86 	public function get_index_url() {
     87 		global $wp_rewrite;
     88 
     89 		if ( ! $wp_rewrite->using_permalinks() ) {
     90 			return home_url( '/?sitemap=index' );
     91 		}
     92 
     93 		return home_url( '/wp-sitemap.xml' );
     94 	}
     95 }