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