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ms-site.php (39587B)


      1 <?php
      2 /**
      3  * Site API
      4  *
      5  * @package WordPress
      6  * @subpackage Multisite
      7  * @since 5.1.0
      8  */
      9 
     10 /**
     11  * Inserts a new site into the database.
     12  *
     13  * @since 5.1.0
     14  *
     15  * @global wpdb $wpdb WordPress database abstraction object.
     16  *
     17  * @param array $data {
     18  *     Data for the new site that should be inserted.
     19  *
     20  *     @type string $domain       Site domain. Default empty string.
     21  *     @type string $path         Site path. Default '/'.
     22  *     @type int    $network_id   The site's network ID. Default is the current network ID.
     23  *     @type string $registered   When the site was registered, in SQL datetime format. Default is
     24  *                                the current time.
     25  *     @type string $last_updated When the site was last updated, in SQL datetime format. Default is
     26  *                                the value of $registered.
     27  *     @type int    $public       Whether the site is public. Default 1.
     28  *     @type int    $archived     Whether the site is archived. Default 0.
     29  *     @type int    $mature       Whether the site is mature. Default 0.
     30  *     @type int    $spam         Whether the site is spam. Default 0.
     31  *     @type int    $deleted      Whether the site is deleted. Default 0.
     32  *     @type int    $lang_id      The site's language ID. Currently unused. Default 0.
     33  *     @type int    $user_id      User ID for the site administrator. Passed to the
     34  *                                `wp_initialize_site` hook.
     35  *     @type string $title        Site title. Default is 'Site %d' where %d is the site ID. Passed
     36  *                                to the `wp_initialize_site` hook.
     37  *     @type array  $options      Custom option $key => $value pairs to use. Default empty array. Passed
     38  *                                to the `wp_initialize_site` hook.
     39  *     @type array  $meta         Custom site metadata $key => $value pairs to use. Default empty array.
     40  *                                Passed to the `wp_initialize_site` hook.
     41  * }
     42  * @return int|WP_Error The new site's ID on success, or error object on failure.
     43  */
     44 function wp_insert_site( array $data ) {
     45 	global $wpdb;
     46 
     47 	$now = current_time( 'mysql', true );
     48 
     49 	$defaults = array(
     50 		'domain'       => '',
     51 		'path'         => '/',
     52 		'network_id'   => get_current_network_id(),
     53 		'registered'   => $now,
     54 		'last_updated' => $now,
     55 		'public'       => 1,
     56 		'archived'     => 0,
     57 		'mature'       => 0,
     58 		'spam'         => 0,
     59 		'deleted'      => 0,
     60 		'lang_id'      => 0,
     61 	);
     62 
     63 	$prepared_data = wp_prepare_site_data( $data, $defaults );
     64 	if ( is_wp_error( $prepared_data ) ) {
     65 		return $prepared_data;
     66 	}
     67 
     68 	if ( false === $wpdb->insert( $wpdb->blogs, $prepared_data ) ) {
     69 		return new WP_Error( 'db_insert_error', __( 'Could not insert site into the database.' ), $wpdb->last_error );
     70 	}
     71 
     72 	$site_id = (int) $wpdb->insert_id;
     73 
     74 	clean_blog_cache( $site_id );
     75 
     76 	$new_site = get_site( $site_id );
     77 
     78 	if ( ! $new_site ) {
     79 		return new WP_Error( 'get_site_error', __( 'Could not retrieve site data.' ) );
     80 	}
     81 
     82 	/**
     83 	 * Fires once a site has been inserted into the database.
     84 	 *
     85 	 * @since 5.1.0
     86 	 *
     87 	 * @param WP_Site $new_site New site object.
     88 	 */
     89 	do_action( 'wp_insert_site', $new_site );
     90 
     91 	// Extract the passed arguments that may be relevant for site initialization.
     92 	$args = array_diff_key( $data, $defaults );
     93 	if ( isset( $args['site_id'] ) ) {
     94 		unset( $args['site_id'] );
     95 	}
     96 
     97 	/**
     98 	 * Fires when a site's initialization routine should be executed.
     99 	 *
    100 	 * @since 5.1.0
    101 	 *
    102 	 * @param WP_Site $new_site New site object.
    103 	 * @param array   $args     Arguments for the initialization.
    104 	 */
    105 	do_action( 'wp_initialize_site', $new_site, $args );
    106 
    107 	// Only compute extra hook parameters if the deprecated hook is actually in use.
    108 	if ( has_action( 'wpmu_new_blog' ) ) {
    109 		$user_id = ! empty( $args['user_id'] ) ? $args['user_id'] : 0;
    110 		$meta    = ! empty( $args['options'] ) ? $args['options'] : array();
    111 
    112 		// WPLANG was passed with `$meta` to the `wpmu_new_blog` hook prior to 5.1.0.
    113 		if ( ! array_key_exists( 'WPLANG', $meta ) ) {
    114 			$meta['WPLANG'] = get_network_option( $new_site->network_id, 'WPLANG' );
    115 		}
    116 
    117 		// Rebuild the data expected by the `wpmu_new_blog` hook prior to 5.1.0 using allowed keys.
    118 		// The `$allowed_data_fields` matches the one used in `wpmu_create_blog()`.
    119 		$allowed_data_fields = array( 'public', 'archived', 'mature', 'spam', 'deleted', 'lang_id' );
    120 		$meta                = array_merge( array_intersect_key( $data, array_flip( $allowed_data_fields ) ), $meta );
    121 
    122 		/**
    123 		 * Fires immediately after a new site is created.
    124 		 *
    125 		 * @since MU (3.0.0)
    126 		 * @deprecated 5.1.0 Use {@see 'wp_insert_site'} instead.
    127 		 *
    128 		 * @param int    $site_id    Site ID.
    129 		 * @param int    $user_id    User ID.
    130 		 * @param string $domain     Site domain.
    131 		 * @param string $path       Site path.
    132 		 * @param int    $network_id Network ID. Only relevant on multi-network installations.
    133 		 * @param array  $meta       Meta data. Used to set initial site options.
    134 		 */
    135 		do_action_deprecated(
    136 			'wpmu_new_blog',
    137 			array( $new_site->id, $user_id, $new_site->domain, $new_site->path, $new_site->network_id, $meta ),
    138 			'5.1.0',
    139 			'wp_insert_site'
    140 		);
    141 	}
    142 
    143 	return (int) $new_site->id;
    144 }
    145 
    146 /**
    147  * Updates a site in the database.
    148  *
    149  * @since 5.1.0
    150  *
    151  * @global wpdb $wpdb WordPress database abstraction object.
    152  *
    153  * @param int   $site_id ID of the site that should be updated.
    154  * @param array $data    Site data to update. See {@see wp_insert_site()} for the list of supported keys.
    155  * @return int|WP_Error The updated site's ID on success, or error object on failure.
    156  */
    157 function wp_update_site( $site_id, array $data ) {
    158 	global $wpdb;
    159 
    160 	if ( empty( $site_id ) ) {
    161 		return new WP_Error( 'site_empty_id', __( 'Site ID must not be empty.' ) );
    162 	}
    163 
    164 	$old_site = get_site( $site_id );
    165 	if ( ! $old_site ) {
    166 		return new WP_Error( 'site_not_exist', __( 'Site does not exist.' ) );
    167 	}
    168 
    169 	$defaults                 = $old_site->to_array();
    170 	$defaults['network_id']   = (int) $defaults['site_id'];
    171 	$defaults['last_updated'] = current_time( 'mysql', true );
    172 	unset( $defaults['blog_id'], $defaults['site_id'] );
    173 
    174 	$data = wp_prepare_site_data( $data, $defaults, $old_site );
    175 	if ( is_wp_error( $data ) ) {
    176 		return $data;
    177 	}
    178 
    179 	if ( false === $wpdb->update( $wpdb->blogs, $data, array( 'blog_id' => $old_site->id ) ) ) {
    180 		return new WP_Error( 'db_update_error', __( 'Could not update site in the database.' ), $wpdb->last_error );
    181 	}
    182 
    183 	clean_blog_cache( $old_site );
    184 
    185 	$new_site = get_site( $old_site->id );
    186 
    187 	/**
    188 	 * Fires once a site has been updated in the database.
    189 	 *
    190 	 * @since 5.1.0
    191 	 *
    192 	 * @param WP_Site $new_site New site object.
    193 	 * @param WP_Site $old_site Old site object.
    194 	 */
    195 	do_action( 'wp_update_site', $new_site, $old_site );
    196 
    197 	return (int) $new_site->id;
    198 }
    199 
    200 /**
    201  * Deletes a site from the database.
    202  *
    203  * @since 5.1.0
    204  *
    205  * @global wpdb $wpdb WordPress database abstraction object.
    206  *
    207  * @param int $site_id ID of the site that should be deleted.
    208  * @return WP_Site|WP_Error The deleted site object on success, or error object on failure.
    209  */
    210 function wp_delete_site( $site_id ) {
    211 	global $wpdb;
    212 
    213 	if ( empty( $site_id ) ) {
    214 		return new WP_Error( 'site_empty_id', __( 'Site ID must not be empty.' ) );
    215 	}
    216 
    217 	$old_site = get_site( $site_id );
    218 	if ( ! $old_site ) {
    219 		return new WP_Error( 'site_not_exist', __( 'Site does not exist.' ) );
    220 	}
    221 
    222 	$errors = new WP_Error();
    223 
    224 	/**
    225 	 * Fires before a site should be deleted from the database.
    226 	 *
    227 	 * Plugins should amend the `$errors` object via its `WP_Error::add()` method. If any errors
    228 	 * are present, the site will not be deleted.
    229 	 *
    230 	 * @since 5.1.0
    231 	 *
    232 	 * @param WP_Error $errors   Error object to add validation errors to.
    233 	 * @param WP_Site  $old_site The site object to be deleted.
    234 	 */
    235 	do_action( 'wp_validate_site_deletion', $errors, $old_site );
    236 
    237 	if ( ! empty( $errors->errors ) ) {
    238 		return $errors;
    239 	}
    240 
    241 	/**
    242 	 * Fires before a site is deleted.
    243 	 *
    244 	 * @since MU (3.0.0)
    245 	 * @deprecated 5.1.0
    246 	 *
    247 	 * @param int  $site_id The site ID.
    248 	 * @param bool $drop    True if site's table should be dropped. Default false.
    249 	 */
    250 	do_action_deprecated( 'delete_blog', array( $old_site->id, true ), '5.1.0' );
    251 
    252 	/**
    253 	 * Fires when a site's uninitialization routine should be executed.
    254 	 *
    255 	 * @since 5.1.0
    256 	 *
    257 	 * @param WP_Site $old_site Deleted site object.
    258 	 */
    259 	do_action( 'wp_uninitialize_site', $old_site );
    260 
    261 	if ( is_site_meta_supported() ) {
    262 		$blog_meta_ids = $wpdb->get_col( $wpdb->prepare( "SELECT meta_id FROM $wpdb->blogmeta WHERE blog_id = %d ", $old_site->id ) );
    263 		foreach ( $blog_meta_ids as $mid ) {
    264 			delete_metadata_by_mid( 'blog', $mid );
    265 		}
    266 	}
    267 
    268 	if ( false === $wpdb->delete( $wpdb->blogs, array( 'blog_id' => $old_site->id ) ) ) {
    269 		return new WP_Error( 'db_delete_error', __( 'Could not delete site from the database.' ), $wpdb->last_error );
    270 	}
    271 
    272 	clean_blog_cache( $old_site );
    273 
    274 	/**
    275 	 * Fires once a site has been deleted from the database.
    276 	 *
    277 	 * @since 5.1.0
    278 	 *
    279 	 * @param WP_Site $old_site Deleted site object.
    280 	 */
    281 	do_action( 'wp_delete_site', $old_site );
    282 
    283 	/**
    284 	 * Fires after the site is deleted from the network.
    285 	 *
    286 	 * @since 4.8.0
    287 	 * @deprecated 5.1.0
    288 	 *
    289 	 * @param int  $site_id The site ID.
    290 	 * @param bool $drop    True if site's tables should be dropped. Default false.
    291 	 */
    292 	do_action_deprecated( 'deleted_blog', array( $old_site->id, true ), '5.1.0' );
    293 
    294 	return $old_site;
    295 }
    296 
    297 /**
    298  * Retrieves site data given a site ID or site object.
    299  *
    300  * Site data will be cached and returned after being passed through a filter.
    301  * If the provided site is empty, the current site global will be used.
    302  *
    303  * @since 4.6.0
    304  *
    305  * @param WP_Site|int|null $site Optional. Site to retrieve. Default is the current site.
    306  * @return WP_Site|null The site object or null if not found.
    307  */
    308 function get_site( $site = null ) {
    309 	if ( empty( $site ) ) {
    310 		$site = get_current_blog_id();
    311 	}
    312 
    313 	if ( $site instanceof WP_Site ) {
    314 		$_site = $site;
    315 	} elseif ( is_object( $site ) ) {
    316 		$_site = new WP_Site( $site );
    317 	} else {
    318 		$_site = WP_Site::get_instance( $site );
    319 	}
    320 
    321 	if ( ! $_site ) {
    322 		return null;
    323 	}
    324 
    325 	/**
    326 	 * Fires after a site is retrieved.
    327 	 *
    328 	 * @since 4.6.0
    329 	 *
    330 	 * @param WP_Site $_site Site data.
    331 	 */
    332 	$_site = apply_filters( 'get_site', $_site );
    333 
    334 	return $_site;
    335 }
    336 
    337 /**
    338  * Adds any sites from the given IDs to the cache that do not already exist in cache.
    339  *
    340  * @since 4.6.0
    341  * @since 5.1.0 Introduced the `$update_meta_cache` parameter.
    342  * @access private
    343  *
    344  * @see update_site_cache()
    345  * @global wpdb $wpdb WordPress database abstraction object.
    346  *
    347  * @param array $ids               ID list.
    348  * @param bool  $update_meta_cache Optional. Whether to update the meta cache. Default true.
    349  */
    350 function _prime_site_caches( $ids, $update_meta_cache = true ) {
    351 	global $wpdb;
    352 
    353 	$non_cached_ids = _get_non_cached_ids( $ids, 'sites' );
    354 	if ( ! empty( $non_cached_ids ) ) {
    355 		$fresh_sites = $wpdb->get_results( sprintf( "SELECT * FROM $wpdb->blogs WHERE blog_id IN (%s)", implode( ',', array_map( 'intval', $non_cached_ids ) ) ) ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
    356 
    357 		update_site_cache( $fresh_sites, $update_meta_cache );
    358 	}
    359 }
    360 
    361 /**
    362  * Updates sites in cache.
    363  *
    364  * @since 4.6.0
    365  * @since 5.1.0 Introduced the `$update_meta_cache` parameter.
    366  *
    367  * @param array $sites             Array of site objects.
    368  * @param bool  $update_meta_cache Whether to update site meta cache. Default true.
    369  */
    370 function update_site_cache( $sites, $update_meta_cache = true ) {
    371 	if ( ! $sites ) {
    372 		return;
    373 	}
    374 	$site_ids = array();
    375 	foreach ( $sites as $site ) {
    376 		$site_ids[] = $site->blog_id;
    377 		wp_cache_add( $site->blog_id, $site, 'sites' );
    378 		wp_cache_add( $site->blog_id . 'short', $site, 'blog-details' );
    379 	}
    380 
    381 	if ( $update_meta_cache ) {
    382 		update_sitemeta_cache( $site_ids );
    383 	}
    384 }
    385 
    386 /**
    387  * Updates metadata cache for list of site IDs.
    388  *
    389  * Performs SQL query to retrieve all metadata for the sites matching `$site_ids` and stores them in the cache.
    390  * Subsequent calls to `get_site_meta()` will not need to query the database.
    391  *
    392  * @since 5.1.0
    393  *
    394  * @param array $site_ids List of site IDs.
    395  * @return array|false An array of metadata on success, false if there is nothing to update.
    396  */
    397 function update_sitemeta_cache( $site_ids ) {
    398 	// Ensure this filter is hooked in even if the function is called early.
    399 	if ( ! has_filter( 'update_blog_metadata_cache', 'wp_check_site_meta_support_prefilter' ) ) {
    400 		add_filter( 'update_blog_metadata_cache', 'wp_check_site_meta_support_prefilter' );
    401 	}
    402 	return update_meta_cache( 'blog', $site_ids );
    403 }
    404 
    405 /**
    406  * Retrieves a list of sites matching requested arguments.
    407  *
    408  * @since 4.6.0
    409  * @since 4.8.0 Introduced the 'lang_id', 'lang__in', and 'lang__not_in' parameters.
    410  *
    411  * @see WP_Site_Query::parse_query()
    412  *
    413  * @param string|array $args Optional. Array or string of arguments. See WP_Site_Query::__construct()
    414  *                           for information on accepted arguments. Default empty array.
    415  * @return array|int List of WP_Site objects, a list of site IDs when 'fields' is set to 'ids',
    416  *                   or the number of sites when 'count' is passed as a query var.
    417  */
    418 function get_sites( $args = array() ) {
    419 	$query = new WP_Site_Query();
    420 
    421 	return $query->query( $args );
    422 }
    423 
    424 /**
    425  * Prepares site data for insertion or update in the database.
    426  *
    427  * @since 5.1.0
    428  *
    429  * @param array        $data     Associative array of site data passed to the respective function.
    430  *                               See {@see wp_insert_site()} for the possibly included data.
    431  * @param array        $defaults Site data defaults to parse $data against.
    432  * @param WP_Site|null $old_site Optional. Old site object if an update, or null if an insertion.
    433  *                               Default null.
    434  * @return array|WP_Error Site data ready for a database transaction, or WP_Error in case a validation
    435  *                        error occurred.
    436  */
    437 function wp_prepare_site_data( $data, $defaults, $old_site = null ) {
    438 
    439 	// Maintain backward-compatibility with `$site_id` as network ID.
    440 	if ( isset( $data['site_id'] ) ) {
    441 		if ( ! empty( $data['site_id'] ) && empty( $data['network_id'] ) ) {
    442 			$data['network_id'] = $data['site_id'];
    443 		}
    444 		unset( $data['site_id'] );
    445 	}
    446 
    447 	/**
    448 	 * Filters passed site data in order to normalize it.
    449 	 *
    450 	 * @since 5.1.0
    451 	 *
    452 	 * @param array $data Associative array of site data passed to the respective function.
    453 	 *                    See {@see wp_insert_site()} for the possibly included data.
    454 	 */
    455 	$data = apply_filters( 'wp_normalize_site_data', $data );
    456 
    457 	$allowed_data_fields = array( 'domain', 'path', 'network_id', 'registered', 'last_updated', 'public', 'archived', 'mature', 'spam', 'deleted', 'lang_id' );
    458 	$data                = array_intersect_key( wp_parse_args( $data, $defaults ), array_flip( $allowed_data_fields ) );
    459 
    460 	$errors = new WP_Error();
    461 
    462 	/**
    463 	 * Fires when data should be validated for a site prior to inserting or updating in the database.
    464 	 *
    465 	 * Plugins should amend the `$errors` object via its `WP_Error::add()` method.
    466 	 *
    467 	 * @since 5.1.0
    468 	 *
    469 	 * @param WP_Error     $errors   Error object to add validation errors to.
    470 	 * @param array        $data     Associative array of complete site data. See {@see wp_insert_site()}
    471 	 *                               for the included data.
    472 	 * @param WP_Site|null $old_site The old site object if the data belongs to a site being updated,
    473 	 *                               or null if it is a new site being inserted.
    474 	 */
    475 	do_action( 'wp_validate_site_data', $errors, $data, $old_site );
    476 
    477 	if ( ! empty( $errors->errors ) ) {
    478 		return $errors;
    479 	}
    480 
    481 	// Prepare for database.
    482 	$data['site_id'] = $data['network_id'];
    483 	unset( $data['network_id'] );
    484 
    485 	return $data;
    486 }
    487 
    488 /**
    489  * Normalizes data for a site prior to inserting or updating in the database.
    490  *
    491  * @since 5.1.0
    492  *
    493  * @param array $data Associative array of site data passed to the respective function.
    494  *                    See {@see wp_insert_site()} for the possibly included data.
    495  * @return array Normalized site data.
    496  */
    497 function wp_normalize_site_data( $data ) {
    498 	// Sanitize domain if passed.
    499 	if ( array_key_exists( 'domain', $data ) ) {
    500 		$data['domain'] = trim( $data['domain'] );
    501 		$data['domain'] = preg_replace( '/\s+/', '', sanitize_user( $data['domain'], true ) );
    502 		if ( is_subdomain_install() ) {
    503 			$data['domain'] = str_replace( '@', '', $data['domain'] );
    504 		}
    505 	}
    506 
    507 	// Sanitize path if passed.
    508 	if ( array_key_exists( 'path', $data ) ) {
    509 		$data['path'] = trailingslashit( '/' . trim( $data['path'], '/' ) );
    510 	}
    511 
    512 	// Sanitize network ID if passed.
    513 	if ( array_key_exists( 'network_id', $data ) ) {
    514 		$data['network_id'] = (int) $data['network_id'];
    515 	}
    516 
    517 	// Sanitize status fields if passed.
    518 	$status_fields = array( 'public', 'archived', 'mature', 'spam', 'deleted' );
    519 	foreach ( $status_fields as $status_field ) {
    520 		if ( array_key_exists( $status_field, $data ) ) {
    521 			$data[ $status_field ] = (int) $data[ $status_field ];
    522 		}
    523 	}
    524 
    525 	// Strip date fields if empty.
    526 	$date_fields = array( 'registered', 'last_updated' );
    527 	foreach ( $date_fields as $date_field ) {
    528 		if ( ! array_key_exists( $date_field, $data ) ) {
    529 			continue;
    530 		}
    531 
    532 		if ( empty( $data[ $date_field ] ) || '0000-00-00 00:00:00' === $data[ $date_field ] ) {
    533 			unset( $data[ $date_field ] );
    534 		}
    535 	}
    536 
    537 	return $data;
    538 }
    539 
    540 /**
    541  * Validates data for a site prior to inserting or updating in the database.
    542  *
    543  * @since 5.1.0
    544  *
    545  * @param WP_Error     $errors   Error object, passed by reference. Will contain validation errors if
    546  *                               any occurred.
    547  * @param array        $data     Associative array of complete site data. See {@see wp_insert_site()}
    548  *                               for the included data.
    549  * @param WP_Site|null $old_site The old site object if the data belongs to a site being updated,
    550  *                               or null if it is a new site being inserted.
    551  */
    552 function wp_validate_site_data( $errors, $data, $old_site = null ) {
    553 	// A domain must always be present.
    554 	if ( empty( $data['domain'] ) ) {
    555 		$errors->add( 'site_empty_domain', __( 'Site domain must not be empty.' ) );
    556 	}
    557 
    558 	// A path must always be present.
    559 	if ( empty( $data['path'] ) ) {
    560 		$errors->add( 'site_empty_path', __( 'Site path must not be empty.' ) );
    561 	}
    562 
    563 	// A network ID must always be present.
    564 	if ( empty( $data['network_id'] ) ) {
    565 		$errors->add( 'site_empty_network_id', __( 'Site network ID must be provided.' ) );
    566 	}
    567 
    568 	// Both registration and last updated dates must always be present and valid.
    569 	$date_fields = array( 'registered', 'last_updated' );
    570 	foreach ( $date_fields as $date_field ) {
    571 		if ( empty( $data[ $date_field ] ) ) {
    572 			$errors->add( 'site_empty_' . $date_field, __( 'Both registration and last updated dates must be provided.' ) );
    573 			break;
    574 		}
    575 
    576 		// Allow '0000-00-00 00:00:00', although it be stripped out at this point.
    577 		if ( '0000-00-00 00:00:00' !== $data[ $date_field ] ) {
    578 			$month      = substr( $data[ $date_field ], 5, 2 );
    579 			$day        = substr( $data[ $date_field ], 8, 2 );
    580 			$year       = substr( $data[ $date_field ], 0, 4 );
    581 			$valid_date = wp_checkdate( $month, $day, $year, $data[ $date_field ] );
    582 			if ( ! $valid_date ) {
    583 				$errors->add( 'site_invalid_' . $date_field, __( 'Both registration and last updated dates must be valid dates.' ) );
    584 				break;
    585 			}
    586 		}
    587 	}
    588 
    589 	if ( ! empty( $errors->errors ) ) {
    590 		return;
    591 	}
    592 
    593 	// If a new site, or domain/path/network ID have changed, ensure uniqueness.
    594 	if ( ! $old_site
    595 		|| $data['domain'] !== $old_site->domain
    596 		|| $data['path'] !== $old_site->path
    597 		|| $data['network_id'] !== $old_site->network_id
    598 	) {
    599 		if ( domain_exists( $data['domain'], $data['path'], $data['network_id'] ) ) {
    600 			$errors->add( 'site_taken', __( 'Sorry, that site already exists!' ) );
    601 		}
    602 	}
    603 }
    604 
    605 /**
    606  * Runs the initialization routine for a given site.
    607  *
    608  * This process includes creating the site's database tables and
    609  * populating them with defaults.
    610  *
    611  * @since 5.1.0
    612  *
    613  * @global wpdb     $wpdb     WordPress database abstraction object.
    614  * @global WP_Roles $wp_roles WordPress role management object.
    615  *
    616  * @param int|WP_Site $site_id Site ID or object.
    617  * @param array       $args    {
    618  *     Optional. Arguments to modify the initialization behavior.
    619  *
    620  *     @type int    $user_id Required. User ID for the site administrator.
    621  *     @type string $title   Site title. Default is 'Site %d' where %d is the
    622  *                           site ID.
    623  *     @type array  $options Custom option $key => $value pairs to use. Default
    624  *                           empty array.
    625  *     @type array  $meta    Custom site metadata $key => $value pairs to use.
    626  *                           Default empty array.
    627  * }
    628  * @return true|WP_Error True on success, or error object on failure.
    629  */
    630 function wp_initialize_site( $site_id, array $args = array() ) {
    631 	global $wpdb, $wp_roles;
    632 
    633 	if ( empty( $site_id ) ) {
    634 		return new WP_Error( 'site_empty_id', __( 'Site ID must not be empty.' ) );
    635 	}
    636 
    637 	$site = get_site( $site_id );
    638 	if ( ! $site ) {
    639 		return new WP_Error( 'site_invalid_id', __( 'Site with the ID does not exist.' ) );
    640 	}
    641 
    642 	if ( wp_is_site_initialized( $site ) ) {
    643 		return new WP_Error( 'site_already_initialized', __( 'The site appears to be already initialized.' ) );
    644 	}
    645 
    646 	$network = get_network( $site->network_id );
    647 	if ( ! $network ) {
    648 		$network = get_network();
    649 	}
    650 
    651 	$args = wp_parse_args(
    652 		$args,
    653 		array(
    654 			'user_id' => 0,
    655 			/* translators: %d: Site ID. */
    656 			'title'   => sprintf( __( 'Site %d' ), $site->id ),
    657 			'options' => array(),
    658 			'meta'    => array(),
    659 		)
    660 	);
    661 
    662 	/**
    663 	 * Filters the arguments for initializing a site.
    664 	 *
    665 	 * @since 5.1.0
    666 	 *
    667 	 * @param array      $args    Arguments to modify the initialization behavior.
    668 	 * @param WP_Site    $site    Site that is being initialized.
    669 	 * @param WP_Network $network Network that the site belongs to.
    670 	 */
    671 	$args = apply_filters( 'wp_initialize_site_args', $args, $site, $network );
    672 
    673 	$orig_installing = wp_installing();
    674 	if ( ! $orig_installing ) {
    675 		wp_installing( true );
    676 	}
    677 
    678 	$switch = false;
    679 	if ( get_current_blog_id() !== $site->id ) {
    680 		$switch = true;
    681 		switch_to_blog( $site->id );
    682 	}
    683 
    684 	require_once ABSPATH . 'wp-admin/includes/upgrade.php';
    685 
    686 	// Set up the database tables.
    687 	make_db_current_silent( 'blog' );
    688 
    689 	$home_scheme    = 'http';
    690 	$siteurl_scheme = 'http';
    691 	if ( ! is_subdomain_install() ) {
    692 		if ( 'https' === parse_url( get_home_url( $network->site_id ), PHP_URL_SCHEME ) ) {
    693 			$home_scheme = 'https';
    694 		}
    695 		if ( 'https' === parse_url( get_network_option( $network->id, 'siteurl' ), PHP_URL_SCHEME ) ) {
    696 			$siteurl_scheme = 'https';
    697 		}
    698 	}
    699 
    700 	// Populate the site's options.
    701 	populate_options(
    702 		array_merge(
    703 			array(
    704 				'home'        => untrailingslashit( $home_scheme . '://' . $site->domain . $site->path ),
    705 				'siteurl'     => untrailingslashit( $siteurl_scheme . '://' . $site->domain . $site->path ),
    706 				'blogname'    => wp_unslash( $args['title'] ),
    707 				'admin_email' => '',
    708 				'upload_path' => get_network_option( $network->id, 'ms_files_rewriting' ) ? UPLOADBLOGSDIR . "/{$site->id}/files" : get_blog_option( $network->site_id, 'upload_path' ),
    709 				'blog_public' => (int) $site->public,
    710 				'WPLANG'      => get_network_option( $network->id, 'WPLANG' ),
    711 			),
    712 			$args['options']
    713 		)
    714 	);
    715 
    716 	// Clean blog cache after populating options.
    717 	clean_blog_cache( $site );
    718 
    719 	// Populate the site's roles.
    720 	populate_roles();
    721 	$wp_roles = new WP_Roles();
    722 
    723 	// Populate metadata for the site.
    724 	populate_site_meta( $site->id, $args['meta'] );
    725 
    726 	// Remove all permissions that may exist for the site.
    727 	$table_prefix = $wpdb->get_blog_prefix();
    728 	delete_metadata( 'user', 0, $table_prefix . 'user_level', null, true );   // Delete all.
    729 	delete_metadata( 'user', 0, $table_prefix . 'capabilities', null, true ); // Delete all.
    730 
    731 	// Install default site content.
    732 	wp_install_defaults( $args['user_id'] );
    733 
    734 	// Set the site administrator.
    735 	add_user_to_blog( $site->id, $args['user_id'], 'administrator' );
    736 	if ( ! user_can( $args['user_id'], 'manage_network' ) && ! get_user_meta( $args['user_id'], 'primary_blog', true ) ) {
    737 		update_user_meta( $args['user_id'], 'primary_blog', $site->id );
    738 	}
    739 
    740 	if ( $switch ) {
    741 		restore_current_blog();
    742 	}
    743 
    744 	wp_installing( $orig_installing );
    745 
    746 	return true;
    747 }
    748 
    749 /**
    750  * Runs the uninitialization routine for a given site.
    751  *
    752  * This process includes dropping the site's database tables and deleting its uploads directory.
    753  *
    754  * @since 5.1.0
    755  *
    756  * @global wpdb $wpdb WordPress database abstraction object.
    757  *
    758  * @param int|WP_Site $site_id Site ID or object.
    759  * @return true|WP_Error True on success, or error object on failure.
    760  */
    761 function wp_uninitialize_site( $site_id ) {
    762 	global $wpdb;
    763 
    764 	if ( empty( $site_id ) ) {
    765 		return new WP_Error( 'site_empty_id', __( 'Site ID must not be empty.' ) );
    766 	}
    767 
    768 	$site = get_site( $site_id );
    769 	if ( ! $site ) {
    770 		return new WP_Error( 'site_invalid_id', __( 'Site with the ID does not exist.' ) );
    771 	}
    772 
    773 	if ( ! wp_is_site_initialized( $site ) ) {
    774 		return new WP_Error( 'site_already_uninitialized', __( 'The site appears to be already uninitialized.' ) );
    775 	}
    776 
    777 	$users = get_users(
    778 		array(
    779 			'blog_id' => $site->id,
    780 			'fields'  => 'ids',
    781 		)
    782 	);
    783 
    784 	// Remove users from the site.
    785 	if ( ! empty( $users ) ) {
    786 		foreach ( $users as $user_id ) {
    787 			remove_user_from_blog( $user_id, $site->id );
    788 		}
    789 	}
    790 
    791 	$switch = false;
    792 	if ( get_current_blog_id() !== $site->id ) {
    793 		$switch = true;
    794 		switch_to_blog( $site->id );
    795 	}
    796 
    797 	$uploads = wp_get_upload_dir();
    798 
    799 	$tables = $wpdb->tables( 'blog' );
    800 
    801 	/**
    802 	 * Filters the tables to drop when the site is deleted.
    803 	 *
    804 	 * @since MU (3.0.0)
    805 	 *
    806 	 * @param string[] $tables  Array of names of the site tables to be dropped.
    807 	 * @param int      $site_id The ID of the site to drop tables for.
    808 	 */
    809 	$drop_tables = apply_filters( 'wpmu_drop_tables', $tables, $site->id );
    810 
    811 	foreach ( (array) $drop_tables as $table ) {
    812 		$wpdb->query( "DROP TABLE IF EXISTS `$table`" ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
    813 	}
    814 
    815 	/**
    816 	 * Filters the upload base directory to delete when the site is deleted.
    817 	 *
    818 	 * @since MU (3.0.0)
    819 	 *
    820 	 * @param string $basedir Uploads path without subdirectory. @see wp_upload_dir()
    821 	 * @param int    $site_id The site ID.
    822 	 */
    823 	$dir     = apply_filters( 'wpmu_delete_blog_upload_dir', $uploads['basedir'], $site->id );
    824 	$dir     = rtrim( $dir, DIRECTORY_SEPARATOR );
    825 	$top_dir = $dir;
    826 	$stack   = array( $dir );
    827 	$index   = 0;
    828 
    829 	while ( $index < count( $stack ) ) {
    830 		// Get indexed directory from stack.
    831 		$dir = $stack[ $index ];
    832 
    833 		// phpcs:disable WordPress.PHP.NoSilencedErrors.Discouraged
    834 		$dh = @opendir( $dir );
    835 		if ( $dh ) {
    836 			$file = @readdir( $dh );
    837 			while ( false !== $file ) {
    838 				if ( '.' === $file || '..' === $file ) {
    839 					$file = @readdir( $dh );
    840 					continue;
    841 				}
    842 
    843 				if ( @is_dir( $dir . DIRECTORY_SEPARATOR . $file ) ) {
    844 					$stack[] = $dir . DIRECTORY_SEPARATOR . $file;
    845 				} elseif ( @is_file( $dir . DIRECTORY_SEPARATOR . $file ) ) {
    846 					@unlink( $dir . DIRECTORY_SEPARATOR . $file );
    847 				}
    848 
    849 				$file = @readdir( $dh );
    850 			}
    851 			@closedir( $dh );
    852 		}
    853 		$index++;
    854 	}
    855 
    856 	$stack = array_reverse( $stack ); // Last added directories are deepest.
    857 	foreach ( (array) $stack as $dir ) {
    858 		if ( $dir != $top_dir ) {
    859 			@rmdir( $dir );
    860 		}
    861 	}
    862 
    863 	// phpcs:enable WordPress.PHP.NoSilencedErrors.Discouraged
    864 	if ( $switch ) {
    865 		restore_current_blog();
    866 	}
    867 
    868 	return true;
    869 }
    870 
    871 /**
    872  * Checks whether a site is initialized.
    873  *
    874  * A site is considered initialized when its database tables are present.
    875  *
    876  * @since 5.1.0
    877  *
    878  * @global wpdb $wpdb WordPress database abstraction object.
    879  *
    880  * @param int|WP_Site $site_id Site ID or object.
    881  * @return bool True if the site is initialized, false otherwise.
    882  */
    883 function wp_is_site_initialized( $site_id ) {
    884 	global $wpdb;
    885 
    886 	if ( is_object( $site_id ) ) {
    887 		$site_id = $site_id->blog_id;
    888 	}
    889 	$site_id = (int) $site_id;
    890 
    891 	/**
    892 	 * Filters the check for whether a site is initialized before the database is accessed.
    893 	 *
    894 	 * Returning a non-null value will effectively short-circuit the function, returning
    895 	 * that value instead.
    896 	 *
    897 	 * @since 5.1.0
    898 	 *
    899 	 * @param bool|null $pre     The value to return instead. Default null
    900 	 *                           to continue with the check.
    901 	 * @param int       $site_id The site ID that is being checked.
    902 	 */
    903 	$pre = apply_filters( 'pre_wp_is_site_initialized', null, $site_id );
    904 	if ( null !== $pre ) {
    905 		return (bool) $pre;
    906 	}
    907 
    908 	$switch = false;
    909 	if ( get_current_blog_id() !== $site_id ) {
    910 		$switch = true;
    911 		remove_action( 'switch_blog', 'wp_switch_roles_and_user', 1 );
    912 		switch_to_blog( $site_id );
    913 	}
    914 
    915 	$suppress = $wpdb->suppress_errors();
    916 	$result   = (bool) $wpdb->get_results( "DESCRIBE {$wpdb->posts}" );
    917 	$wpdb->suppress_errors( $suppress );
    918 
    919 	if ( $switch ) {
    920 		restore_current_blog();
    921 		add_action( 'switch_blog', 'wp_switch_roles_and_user', 1, 2 );
    922 	}
    923 
    924 	return $result;
    925 }
    926 
    927 /**
    928  * Clean the blog cache
    929  *
    930  * @since 3.5.0
    931  *
    932  * @global bool $_wp_suspend_cache_invalidation
    933  *
    934  * @param WP_Site|int $blog The site object or ID to be cleared from cache.
    935  */
    936 function clean_blog_cache( $blog ) {
    937 	global $_wp_suspend_cache_invalidation;
    938 
    939 	if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
    940 		return;
    941 	}
    942 
    943 	if ( empty( $blog ) ) {
    944 		return;
    945 	}
    946 
    947 	$blog_id = $blog;
    948 	$blog    = get_site( $blog_id );
    949 	if ( ! $blog ) {
    950 		if ( ! is_numeric( $blog_id ) ) {
    951 			return;
    952 		}
    953 
    954 		// Make sure a WP_Site object exists even when the site has been deleted.
    955 		$blog = new WP_Site(
    956 			(object) array(
    957 				'blog_id' => $blog_id,
    958 				'domain'  => null,
    959 				'path'    => null,
    960 			)
    961 		);
    962 	}
    963 
    964 	$blog_id         = $blog->blog_id;
    965 	$domain_path_key = md5( $blog->domain . $blog->path );
    966 
    967 	wp_cache_delete( $blog_id, 'sites' );
    968 	wp_cache_delete( $blog_id, 'site-details' );
    969 	wp_cache_delete( $blog_id, 'blog-details' );
    970 	wp_cache_delete( $blog_id . 'short', 'blog-details' );
    971 	wp_cache_delete( $domain_path_key, 'blog-lookup' );
    972 	wp_cache_delete( $domain_path_key, 'blog-id-cache' );
    973 	wp_cache_delete( $blog_id, 'blog_meta' );
    974 
    975 	/**
    976 	 * Fires immediately after a site has been removed from the object cache.
    977 	 *
    978 	 * @since 4.6.0
    979 	 *
    980 	 * @param int     $id              Blog ID.
    981 	 * @param WP_Site $blog            Site object.
    982 	 * @param string  $domain_path_key md5 hash of domain and path.
    983 	 */
    984 	do_action( 'clean_site_cache', $blog_id, $blog, $domain_path_key );
    985 
    986 	wp_cache_set( 'last_changed', microtime(), 'sites' );
    987 
    988 	/**
    989 	 * Fires after the blog details cache is cleared.
    990 	 *
    991 	 * @since 3.4.0
    992 	 * @deprecated 4.9.0 Use {@see 'clean_site_cache'} instead.
    993 	 *
    994 	 * @param int $blog_id Blog ID.
    995 	 */
    996 	do_action_deprecated( 'refresh_blog_details', array( $blog_id ), '4.9.0', 'clean_site_cache' );
    997 }
    998 
    999 /**
   1000  * Adds metadata to a site.
   1001  *
   1002  * @since 5.1.0
   1003  *
   1004  * @param int    $site_id    Site ID.
   1005  * @param string $meta_key   Metadata name.
   1006  * @param mixed  $meta_value Metadata value. Must be serializable if non-scalar.
   1007  * @param bool   $unique     Optional. Whether the same key should not be added.
   1008  *                           Default false.
   1009  * @return int|false Meta ID on success, false on failure.
   1010  */
   1011 function add_site_meta( $site_id, $meta_key, $meta_value, $unique = false ) {
   1012 	return add_metadata( 'blog', $site_id, $meta_key, $meta_value, $unique );
   1013 }
   1014 
   1015 /**
   1016  * Removes metadata matching criteria from a site.
   1017  *
   1018  * You can match based on the key, or key and value. Removing based on key and
   1019  * value, will keep from removing duplicate metadata with the same key. It also
   1020  * allows removing all metadata matching key, if needed.
   1021  *
   1022  * @since 5.1.0
   1023  *
   1024  * @param int    $site_id    Site ID.
   1025  * @param string $meta_key   Metadata name.
   1026  * @param mixed  $meta_value Optional. Metadata value. If provided,
   1027  *                           rows will only be removed that match the value.
   1028  *                           Must be serializable if non-scalar. Default empty.
   1029  * @return bool True on success, false on failure.
   1030  */
   1031 function delete_site_meta( $site_id, $meta_key, $meta_value = '' ) {
   1032 	return delete_metadata( 'blog', $site_id, $meta_key, $meta_value );
   1033 }
   1034 
   1035 /**
   1036  * Retrieves metadata for a site.
   1037  *
   1038  * @since 5.1.0
   1039  *
   1040  * @param int    $site_id Site ID.
   1041  * @param string $key     Optional. The meta key to retrieve. By default,
   1042  *                        returns data for all keys. Default empty.
   1043  * @param bool   $single  Optional. Whether to return a single value.
   1044  *                        This parameter has no effect if `$key` is not specified.
   1045  *                        Default false.
   1046  * @return mixed An array of values if `$single` is false.
   1047  *               The value of meta data field if `$single` is true.
   1048  *               False for an invalid `$site_id` (non-numeric, zero, or negative value).
   1049  *               An empty string if a valid but non-existing site ID is passed.
   1050  */
   1051 function get_site_meta( $site_id, $key = '', $single = false ) {
   1052 	return get_metadata( 'blog', $site_id, $key, $single );
   1053 }
   1054 
   1055 /**
   1056  * Updates metadata for a site.
   1057  *
   1058  * Use the $prev_value parameter to differentiate between meta fields with the
   1059  * same key and site ID.
   1060  *
   1061  * If the meta field for the site does not exist, it will be added.
   1062  *
   1063  * @since 5.1.0
   1064  *
   1065  * @param int    $site_id    Site ID.
   1066  * @param string $meta_key   Metadata key.
   1067  * @param mixed  $meta_value Metadata value. Must be serializable if non-scalar.
   1068  * @param mixed  $prev_value Optional. Previous value to check before updating.
   1069  *                           If specified, only update existing metadata entries with
   1070  *                           this value. Otherwise, update all entries. Default empty.
   1071  * @return int|bool Meta ID if the key didn't exist, true on successful update,
   1072  *                  false on failure or if the value passed to the function
   1073  *                  is the same as the one that is already in the database.
   1074  */
   1075 function update_site_meta( $site_id, $meta_key, $meta_value, $prev_value = '' ) {
   1076 	return update_metadata( 'blog', $site_id, $meta_key, $meta_value, $prev_value );
   1077 }
   1078 
   1079 /**
   1080  * Deletes everything from site meta matching meta key.
   1081  *
   1082  * @since 5.1.0
   1083  *
   1084  * @param string $meta_key Metadata key to search for when deleting.
   1085  * @return bool Whether the site meta key was deleted from the database.
   1086  */
   1087 function delete_site_meta_by_key( $meta_key ) {
   1088 	return delete_metadata( 'blog', null, $meta_key, '', true );
   1089 }
   1090 
   1091 /**
   1092  * Updates the count of sites for a network based on a changed site.
   1093  *
   1094  * @since 5.1.0
   1095  *
   1096  * @param WP_Site      $new_site The site object that has been inserted, updated or deleted.
   1097  * @param WP_Site|null $old_site Optional. If $new_site has been updated, this must be the previous
   1098  *                               state of that site. Default null.
   1099  */
   1100 function wp_maybe_update_network_site_counts_on_update( $new_site, $old_site = null ) {
   1101 	if ( null === $old_site ) {
   1102 		wp_maybe_update_network_site_counts( $new_site->network_id );
   1103 		return;
   1104 	}
   1105 
   1106 	if ( $new_site->network_id != $old_site->network_id ) {
   1107 		wp_maybe_update_network_site_counts( $new_site->network_id );
   1108 		wp_maybe_update_network_site_counts( $old_site->network_id );
   1109 	}
   1110 }
   1111 
   1112 /**
   1113  * Triggers actions on site status updates.
   1114  *
   1115  * @since 5.1.0
   1116  *
   1117  * @param WP_Site      $new_site The site object after the update.
   1118  * @param WP_Site|null $old_site Optional. If $new_site has been updated, this must be the previous
   1119  *                               state of that site. Default null.
   1120  */
   1121 function wp_maybe_transition_site_statuses_on_update( $new_site, $old_site = null ) {
   1122 	$site_id = $new_site->id;
   1123 
   1124 	// Use the default values for a site if no previous state is given.
   1125 	if ( ! $old_site ) {
   1126 		$old_site = new WP_Site( new stdClass() );
   1127 	}
   1128 
   1129 	if ( $new_site->spam != $old_site->spam ) {
   1130 		if ( 1 == $new_site->spam ) {
   1131 
   1132 			/**
   1133 			 * Fires when the 'spam' status is added to a site.
   1134 			 *
   1135 			 * @since MU (3.0.0)
   1136 			 *
   1137 			 * @param int $site_id Site ID.
   1138 			 */
   1139 			do_action( 'make_spam_blog', $site_id );
   1140 		} else {
   1141 
   1142 			/**
   1143 			 * Fires when the 'spam' status is removed from a site.
   1144 			 *
   1145 			 * @since MU (3.0.0)
   1146 			 *
   1147 			 * @param int $site_id Site ID.
   1148 			 */
   1149 			do_action( 'make_ham_blog', $site_id );
   1150 		}
   1151 	}
   1152 
   1153 	if ( $new_site->mature != $old_site->mature ) {
   1154 		if ( 1 == $new_site->mature ) {
   1155 
   1156 			/**
   1157 			 * Fires when the 'mature' status is added to a site.
   1158 			 *
   1159 			 * @since 3.1.0
   1160 			 *
   1161 			 * @param int $site_id Site ID.
   1162 			 */
   1163 			do_action( 'mature_blog', $site_id );
   1164 		} else {
   1165 
   1166 			/**
   1167 			 * Fires when the 'mature' status is removed from a site.
   1168 			 *
   1169 			 * @since 3.1.0
   1170 			 *
   1171 			 * @param int $site_id Site ID.
   1172 			 */
   1173 			do_action( 'unmature_blog', $site_id );
   1174 		}
   1175 	}
   1176 
   1177 	if ( $new_site->archived != $old_site->archived ) {
   1178 		if ( 1 == $new_site->archived ) {
   1179 
   1180 			/**
   1181 			 * Fires when the 'archived' status is added to a site.
   1182 			 *
   1183 			 * @since MU (3.0.0)
   1184 			 *
   1185 			 * @param int $site_id Site ID.
   1186 			 */
   1187 			do_action( 'archive_blog', $site_id );
   1188 		} else {
   1189 
   1190 			/**
   1191 			 * Fires when the 'archived' status is removed from a site.
   1192 			 *
   1193 			 * @since MU (3.0.0)
   1194 			 *
   1195 			 * @param int $site_id Site ID.
   1196 			 */
   1197 			do_action( 'unarchive_blog', $site_id );
   1198 		}
   1199 	}
   1200 
   1201 	if ( $new_site->deleted != $old_site->deleted ) {
   1202 		if ( 1 == $new_site->deleted ) {
   1203 
   1204 			/**
   1205 			 * Fires when the 'deleted' status is added to a site.
   1206 			 *
   1207 			 * @since 3.5.0
   1208 			 *
   1209 			 * @param int $site_id Site ID.
   1210 			 */
   1211 			do_action( 'make_delete_blog', $site_id );
   1212 		} else {
   1213 
   1214 			/**
   1215 			 * Fires when the 'deleted' status is removed from a site.
   1216 			 *
   1217 			 * @since 3.5.0
   1218 			 *
   1219 			 * @param int $site_id Site ID.
   1220 			 */
   1221 			do_action( 'make_undelete_blog', $site_id );
   1222 		}
   1223 	}
   1224 
   1225 	if ( $new_site->public != $old_site->public ) {
   1226 
   1227 		/**
   1228 		 * Fires after the current blog's 'public' setting is updated.
   1229 		 *
   1230 		 * @since MU (3.0.0)
   1231 		 *
   1232 		 * @param int    $site_id Site ID.
   1233 		 * @param string $value   The value of the site status.
   1234 		 */
   1235 		do_action( 'update_blog_public', $site_id, $new_site->public );
   1236 	}
   1237 }
   1238 
   1239 /**
   1240  * Cleans the necessary caches after specific site data has been updated.
   1241  *
   1242  * @since 5.1.0
   1243  *
   1244  * @param WP_Site $new_site The site object after the update.
   1245  * @param WP_Site $old_site The site obejct prior to the update.
   1246  */
   1247 function wp_maybe_clean_new_site_cache_on_update( $new_site, $old_site ) {
   1248 	if ( $old_site->domain !== $new_site->domain || $old_site->path !== $new_site->path ) {
   1249 		clean_blog_cache( $new_site );
   1250 	}
   1251 }
   1252 
   1253 /**
   1254  * Updates the `blog_public` option for a given site ID.
   1255  *
   1256  * @since 5.1.0
   1257  *
   1258  * @param int    $site_id Site ID.
   1259  * @param string $public  The value of the site status.
   1260  */
   1261 function wp_update_blog_public_option_on_site_update( $site_id, $public ) {
   1262 
   1263 	// Bail if the site's database tables do not exist (yet).
   1264 	if ( ! wp_is_site_initialized( $site_id ) ) {
   1265 		return;
   1266 	}
   1267 
   1268 	update_blog_option( $site_id, 'blog_public', $public );
   1269 }
   1270 
   1271 /**
   1272  * Sets the last changed time for the 'sites' cache group.
   1273  *
   1274  * @since 5.1.0
   1275  */
   1276 function wp_cache_set_sites_last_changed() {
   1277 	wp_cache_set( 'last_changed', microtime(), 'sites' );
   1278 }
   1279 
   1280 /**
   1281  * Aborts calls to site meta if it is not supported.
   1282  *
   1283  * @since 5.1.0
   1284  *
   1285  * @global wpdb $wpdb WordPress database abstraction object.
   1286  *
   1287  * @param mixed $check Skip-value for whether to proceed site meta function execution.
   1288  * @return mixed Original value of $check, or false if site meta is not supported.
   1289  */
   1290 function wp_check_site_meta_support_prefilter( $check ) {
   1291 	if ( ! is_site_meta_supported() ) {
   1292 		/* translators: %s: Database table name. */
   1293 		_doing_it_wrong( __FUNCTION__, sprintf( __( 'The %s table is not installed. Please run the network database upgrade.' ), $GLOBALS['wpdb']->blogmeta ), '5.1.0' );
   1294 		return false;
   1295 	}
   1296 
   1297 	return $check;
   1298 }