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Description

Clean the blog cache

Usage

clean_blog_cache( $blog );

Parameters

$blog

( WP_Site|int ) required – The site object or ID to be cleared from cache.

Returns

void

Source

File name: wordpress/wp-includes/ms-site.php
Lines:

function clean_blog_cache( $blog ) {
  global $_wp_suspend_cache_invalidation;

  if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
    return;
  }

  if ( empty( $blog ) ) {
    return;
  }

  $blog_id = $blog;
  $blog    = get_site( $blog_id );
  if ( ! $blog ) {
    if ( ! is_numeric( $blog_id ) ) {
      return;
    }

    // Make sure a WP_Site object exists even when the site has been deleted.
    $blog = new WP_Site(
      (object) array(
        'blog_id' => $blog_id,
        'domain'  => null,
        'path'    => null,
      )
    );
  }

  $blog_id         = $blog->blog_id;
  $domain_path_key = md5( $blog->domain . $blog->path );

  wp_cache_delete( $blog_id, 'sites' );
  wp_cache_delete( $blog_id, 'site-details' );
  wp_cache_delete( $blog_id, 'blog-details' );
  wp_cache_delete( $blog_id . 'short', 'blog-details' );
  wp_cache_delete( $domain_path_key, 'blog-lookup' );
  wp_cache_delete( $domain_path_key, 'blog-id-cache' );
  wp_cache_delete( $blog_id, 'blog_meta' );

  
/**
 * Fires immediately after a site has been removed from the object cache.
 *
 * @since 4.6.0
 *
 * @param string  $id              Site ID as a numeric string.
 * @param WP_Site $blog            Site object.
 * @param string  $domain_path_key md5 hash of domain and path.
 */
  do_action( 'clean_site_cache', $blog_id, $blog, $domain_path_key );

  wp_cache_set_sites_last_changed();

  
/**
 * Fires after the blog details cache is cleared.
 *
 * @since 3.4.0
 * @deprecated 4.9.0 Use {@see 'clean_site_cache'} instead.
 *
 * @param int $blog_id Blog ID.
 */
  do_action_deprecated( 'refresh_blog_details', array( $blog_id ), '4.9.0', 'clean_site_cache' );
}
 

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