get_blog_count(), 'users' => get_user_count(), ); return $stats; } /** * Get one of a user's active blogs * * Returns the user's primary blog, if they have one and * it is active. If it's inactive, function returns another * active blog of the user. If none are found, the user * is added as a Subscriber to the Dashboard Blog and that blog * is returned. * * @since MU 1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $user_id The unique ID of the user * @return WP_Site|void The blog object */ function get_active_blog_for_user( $user_id ) { global $wpdb; $blogs = get_blogs_of_user( $user_id ); if ( empty( $blogs ) ) return; if ( !is_multisite() ) return $blogs[$wpdb->blogid]; $primary_blog = get_user_meta( $user_id, 'primary_blog', true ); $first_blog = current($blogs); if ( false !== $primary_blog ) { if ( ! isset( $blogs[ $primary_blog ] ) ) { update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id ); $primary = get_site( $first_blog->userblog_id ); } else { $primary = get_site( $primary_blog ); } } else { //TODO Review this call to add_user_to_blog too - to get here the user must have a role on this blog? add_user_to_blog( $first_blog->userblog_id, $user_id, 'subscriber' ); update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id ); $primary = $first_blog; } if ( ( ! is_object( $primary ) ) || ( $primary->archived == 1 || $primary->spam == 1 || $primary->deleted == 1 ) ) { $blogs = get_blogs_of_user( $user_id, true ); // if a user's primary blog is shut down, check their other blogs. $ret = false; if ( is_array( $blogs ) && count( $blogs ) > 0 ) { foreach ( (array) $blogs as $blog_id => $blog ) { if ( $blog->site_id != $wpdb->siteid ) continue; $details = get_site( $blog_id ); if ( is_object( $details ) && $details->archived == 0 && $details->spam == 0 && $details->deleted == 0 ) { $ret = $blog; if ( get_user_meta( $user_id , 'primary_blog', true ) != $blog_id ) update_user_meta( $user_id, 'primary_blog', $blog_id ); if ( !get_user_meta($user_id , 'source_domain', true) ) update_user_meta( $user_id, 'source_domain', $blog->domain ); break; } } } else { return; } return $ret; } else { return $primary; } } /** * The number of active users in your installation. * * The count is cached and updated twice daily. This is not a live count. * * @since MU 2.7 * @since 4.8.0 The $network_id parameter has been added. * * @param int|null $network_id ID of the network. Default is the current network. * @return int Number of active users on the network. */ function get_user_count( $network_id = null ) { return get_network_option( $network_id, 'user_count' ); } /** * The number of active sites on your installation. * * The count is cached and updated twice daily. This is not a live count. * * @since MU 1.0 * @since 3.7.0 The $network_id parameter has been deprecated. * @since 4.8.0 The $network_id parameter is now being used. * * @param int|null $network_id ID of the network. Default is the current network. * @return int Number of active sites on the network. */ function get_blog_count( $network_id = null ) { return get_network_option( $network_id, 'blog_count' ); } /** * Get a blog post from any site on the network. * * @since MU 1.0 * * @param int $blog_id ID of the blog. * @param int $post_id ID of the post you're looking for. * @return WP_Post|null WP_Post on success or null on failure */ function get_blog_post( $blog_id, $post_id ) { switch_to_blog( $blog_id ); $post = get_post( $post_id ); restore_current_blog(); return $post; } /** * Adds a user to a blog. * * Use the {@see 'add_user_to_blog'} action to fire an event when users are added to a blog. * * @since MU 1.0 * * @param int $blog_id ID of the blog you're adding the user to. * @param int $user_id ID of the user you're adding. * @param string $role The role you want the user to have * @return true|WP_Error */ function add_user_to_blog( $blog_id, $user_id, $role ) { switch_to_blog($blog_id); $user = get_userdata( $user_id ); if ( ! $user ) { restore_current_blog(); return new WP_Error( 'user_does_not_exist', __( 'The requested user does not exist.' ) ); } if ( !get_user_meta($user_id, 'primary_blog', true) ) { update_user_meta($user_id, 'primary_blog', $blog_id); $site = get_site( $blog_id ); update_user_meta( $user_id, 'source_domain', $site->domain ); } $user->set_role($role); /** * Fires immediately after a user is added to a site. * * @since MU * * @param int $user_id User ID. * @param string $role User role. * @param int $blog_id Blog ID. */ do_action( 'add_user_to_blog', $user_id, $role, $blog_id ); wp_cache_delete( $user_id, 'users' ); wp_cache_delete( $blog_id . '_user_count', 'blog-details' ); restore_current_blog(); return true; } /** * Remove a user from a blog. * * Use the {@see 'remove_user_from_blog'} action to fire an event when * users are removed from a blog. * * Accepts an optional `$reassign` parameter, if you want to * reassign the user's blog posts to another user upon removal. * * @since MU 1.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $user_id ID of the user you're removing. * @param int $blog_id ID of the blog you're removing the user from. * @param string $reassign Optional. A user to whom to reassign posts. * @return true|WP_Error */ function remove_user_from_blog($user_id, $blog_id = '', $reassign = '') { global $wpdb; switch_to_blog($blog_id); $user_id = (int) $user_id; /** * Fires before a user is removed from a site. * * @since MU * * @param int $user_id User ID. * @param int $blog_id Blog ID. */ do_action( 'remove_user_from_blog', $user_id, $blog_id ); // If being removed from the primary blog, set a new primary if the user is assigned // to multiple blogs. $primary_blog = get_user_meta($user_id, 'primary_blog', true); if ( $primary_blog == $blog_id ) { $new_id = ''; $new_domain = ''; $blogs = get_blogs_of_user($user_id); foreach ( (array) $blogs as $blog ) { if ( $blog->userblog_id == $blog_id ) continue; $new_id = $blog->userblog_id; $new_domain = $blog->domain; break; } update_user_meta($user_id, 'primary_blog', $new_id); update_user_meta($user_id, 'source_domain', $new_domain); } // wp_revoke_user($user_id); $user = get_userdata( $user_id ); if ( ! $user ) { restore_current_blog(); return new WP_Error('user_does_not_exist', __('That user does not exist.')); } $user->remove_all_caps(); $blogs = get_blogs_of_user($user_id); if ( count($blogs) == 0 ) { update_user_meta($user_id, 'primary_blog', ''); update_user_meta($user_id, 'source_domain', ''); } if ( $reassign != '' ) { $reassign = (int) $reassign; $post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d", $user_id ) ); $link_ids = $wpdb->get_col( $wpdb->prepare( "SELECT link_id FROM $wpdb->links WHERE link_owner = %d", $user_id ) ); if ( ! empty( $post_ids ) ) { $wpdb->query( $wpdb->prepare( "UPDATE $wpdb->posts SET post_author = %d WHERE post_author = %d", $reassign, $user_id ) ); array_walk( $post_ids, 'clean_post_cache' ); } if ( ! empty( $link_ids ) ) { $wpdb->query( $wpdb->prepare( "UPDATE $wpdb->links SET link_owner = %d WHERE link_owner = %d", $reassign, $user_id ) ); array_walk( $link_ids, 'clean_bookmark_cache' ); } } restore_current_blog(); return true; } /** * Get the permalink for a post on another blog. * * @since MU 1.0 * * @param int $blog_id ID of the source blog. * @param int $post_id ID of the desired post. * @return string The post's permalink */ function get_blog_permalink( $blog_id, $post_id ) { switch_to_blog( $blog_id ); $link = get_permalink( $post_id ); restore_current_blog(); return $link; } /** * Get a blog's numeric ID from its URL. * * On a subdirectory installation like example.com/blog1/, * $domain will be the root 'example.com' and $path the * subdirectory '/blog1/'. With subdomains like blog1.example.com, * $domain is 'blog1.example.com' and $path is '/'. * * @since MU 2.6.5 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $domain * @param string $path Optional. Not required for subdomain installations. * @return int 0 if no blog found, otherwise the ID of the matching blog */ function get_blog_id_from_url( $domain, $path = '/' ) { $domain = strtolower( $domain ); $path = strtolower( $path ); $id = wp_cache_get( md5( $domain . $path ), 'blog-id-cache' ); if ( $id == -1 ) // blog does not exist return 0; elseif ( $id ) return (int) $id; $args = array( 'domain' => $domain, 'path' => $path, 'fields' => 'ids', ); $result = get_sites( $args ); $id = array_shift( $result ); if ( ! $id ) { wp_cache_set( md5( $domain . $path ), -1, 'blog-id-cache' ); return 0; } wp_cache_set( md5( $domain . $path ), $id, 'blog-id-cache' ); return $id; } // Admin functions /** * Checks an email address against a list of banned domains. * * This function checks against the Banned Email Domains list * at wp-admin/network/settings.php. The check is only run on * self-registrations; user creation at wp-admin/network/users.php * bypasses this check. * * @since MU * * @param string $user_email The email provided by the user at registration. * @return bool Returns true when the email address is banned. */ function is_email_address_unsafe( $user_email ) { $banned_names = get_site_option( 'banned_email_domains' ); if ( $banned_names && ! is_array( $banned_names ) ) $banned_names = explode( "\n", $banned_names ); $is_email_address_unsafe = false; if ( $banned_names && is_array( $banned_names ) ) { $banned_names = array_map( 'strtolower', $banned_names ); $normalized_email = strtolower( $user_email ); list( $email_local_part, $email_domain ) = explode( '@', $normalized_email ); foreach ( $banned_names as $banned_domain ) { if ( ! $banned_domain ) continue; if ( $email_domain == $banned_domain ) { $is_email_address_unsafe = true; break; } $dotted_domain = ".$banned_domain"; if ( $dotted_domain === substr( $normalized_email, -strlen( $dotted_domain ) ) ) { $is_email_address_unsafe = true; break; } } } /** * Filters whether an email address is unsafe. * * @since 3.5.0 * * @param bool $is_email_address_unsafe Whether the email address is "unsafe". Default false. * @param string $user_email User email address. */ return apply_filters( 'is_email_address_unsafe', $is_email_address_unsafe, $user_email ); } /** * Sanitize and validate data required for a user sign-up. * * Verifies the validity and uniqueness of user names and user email addresses, * and checks email addresses against admin-provided domain whitelists and blacklists. * * The {@see 'wpmu_validate_user_signup'} hook provides an easy way to modify the sign-up * process. The value $result, which is passed to the hook, contains both the user-provided * info and the error messages created by the function. {@see 'wpmu_validate_user_signup'} * allows you to process the data in any way you'd like, and unset the relevant errors if * necessary. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $user_name The login name provided by the user. * @param string $user_email The email provided by the user. * @return array Contains username, email, and error messages. */ function wpmu_validate_user_signup($user_name, $user_email) { global $wpdb; $errors = new WP_Error(); $orig_username = $user_name; $user_name = preg_replace( '/\s+/', '', sanitize_user( $user_name, true ) ); if ( $user_name != $orig_username || preg_match( '/[^a-z0-9]/', $user_name ) ) { $errors->add( 'user_name', __( 'Usernames can only contain lowercase letters (a-z) and numbers.' ) ); $user_name = $orig_username; } $user_email = sanitize_email( $user_email ); if ( empty( $user_name ) ) $errors->add('user_name', __( 'Please enter a username.' ) ); $illegal_names = get_site_option( 'illegal_names' ); if ( ! is_array( $illegal_names ) ) { $illegal_names = array( 'www', 'web', 'root', 'admin', 'main', 'invite', 'administrator' ); add_site_option( 'illegal_names', $illegal_names ); } if ( in_array( $user_name, $illegal_names ) ) { $errors->add( 'user_name', __( 'Sorry, that username is not allowed.' ) ); } /** This filter is documented in wp-includes/user.php */ $illegal_logins = (array) apply_filters( 'illegal_user_logins', array() ); if ( in_array( strtolower( $user_name ), array_map( 'strtolower', $illegal_logins ) ) ) { $errors->add( 'user_name', __( 'Sorry, that username is not allowed.' ) ); } if ( is_email_address_unsafe( $user_email ) ) $errors->add('user_email', __('You cannot use that email address to signup. We are having problems with them blocking some of our email. Please use another email provider.')); if ( strlen( $user_name ) < 4 ) $errors->add('user_name', __( 'Username must be at least 4 characters.' ) ); if ( strlen( $user_name ) > 60 ) { $errors->add( 'user_name', __( 'Username may not be longer than 60 characters.' ) ); } // all numeric? if ( preg_match( '/^[0-9]*$/', $user_name ) ) $errors->add('user_name', __('Sorry, usernames must have letters too!')); if ( !is_email( $user_email ) ) $errors->add('user_email', __( 'Please enter a valid email address.' ) ); $limited_email_domains = get_site_option( 'limited_email_domains' ); if ( is_array( $limited_email_domains ) && ! empty( $limited_email_domains ) ) { $emaildomain = substr( $user_email, 1 + strpos( $user_email, '@' ) ); if ( ! in_array( $emaildomain, $limited_email_domains ) ) { $errors->add('user_email', __('Sorry, that email address is not allowed!')); } } // Check if the username has been used already. if ( username_exists($user_name) ) $errors->add( 'user_name', __( 'Sorry, that username already exists!' ) ); // Check if the email address has been used already. if ( email_exists($user_email) ) $errors->add( 'user_email', __( 'Sorry, that email address is already used!' ) ); // Has someone already signed up for this username? $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE user_login = %s", $user_name) ); if ( $signup != null ) { $registered_at = mysql2date('U', $signup->registered); $now = current_time( 'timestamp', true ); $diff = $now - $registered_at; // If registered more than two days ago, cancel registration and let this signup go through. if ( $diff > 2 * DAY_IN_SECONDS ) $wpdb->delete( $wpdb->signups, array( 'user_login' => $user_name ) ); else $errors->add('user_name', __('That username is currently reserved but may be available in a couple of days.')); } $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE user_email = %s", $user_email) ); if ( $signup != null ) { $diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered); // If registered more than two days ago, cancel registration and let this signup go through. if ( $diff > 2 * DAY_IN_SECONDS ) $wpdb->delete( $wpdb->signups, array( 'user_email' => $user_email ) ); else $errors->add('user_email', __('That email address has already been used. Please check your inbox for an activation email. It will become available in a couple of days if you do nothing.')); } $result = array('user_name' => $user_name, 'orig_username' => $orig_username, 'user_email' => $user_email, 'errors' => $errors); /** * Filters the validated user registration details. * * This does not allow you to override the username or email of the user during * registration. The values are solely used for validation and error handling. * * @since MU * * @param array $result { * The array of user name, email and the error messages. * * @type string $user_name Sanitized and unique username. * @type string $orig_username Original username. * @type string $user_email User email address. * @type WP_Error $errors WP_Error object containing any errors found. * } */ return apply_filters( 'wpmu_validate_user_signup', $result ); } /** * Processes new site registrations. * * Checks the data provided by the user during blog signup. Verifies * the validity and uniqueness of blog paths and domains. * * This function prevents the current user from registering a new site * with a blogname equivalent to another user's login name. Passing the * $user parameter to the function, where $user is the other user, is * effectively an override of this limitation. * * Filter {@see 'wpmu_validate_blog_signup'} if you want to modify * the way that WordPress validates new site signups. * * @since MU * * @global wpdb $wpdb * @global string $domain * * @param string $blogname The blog name provided by the user. Must be unique. * @param string $blog_title The blog title provided by the user. * @param WP_User|string $user Optional. The user object to check against the new site name. * @return array Contains the new site data and error messages. */ function wpmu_validate_blog_signup( $blogname, $blog_title, $user = '' ) { global $wpdb, $domain; $current_network = get_network(); $base = $current_network->path; $blog_title = strip_tags( $blog_title ); $errors = new WP_Error(); $illegal_names = get_site_option( 'illegal_names' ); if ( $illegal_names == false ) { $illegal_names = array( 'www', 'web', 'root', 'admin', 'main', 'invite', 'administrator' ); add_site_option( 'illegal_names', $illegal_names ); } /* * On sub dir installs, some names are so illegal, only a filter can * spring them from jail. */ if ( ! is_subdomain_install() ) { $illegal_names = array_merge( $illegal_names, get_subdirectory_reserved_names() ); } if ( empty( $blogname ) ) $errors->add('blogname', __( 'Please enter a site name.' ) ); if ( preg_match( '/[^a-z0-9]+/', $blogname ) ) { $errors->add( 'blogname', __( 'Site names can only contain lowercase letters (a-z) and numbers.' ) ); } if ( in_array( $blogname, $illegal_names ) ) $errors->add('blogname', __( 'That name is not allowed.' ) ); /** * Filters the minimum site name length required when validating a site signup. * * @since 4.8.0 * * @param int $length The minimum site name length. Default 4. */ $minimum_site_name_length = apply_filters( 'minimum_site_name_length', 4 ); if ( strlen( $blogname ) < $minimum_site_name_length ) { /* translators: %s: minimum site name length */ $errors->add( 'blogname', sprintf( _n( 'Site name must be at least %s character.', 'Site name must be at least %s characters.', $minimum_site_name_length ), number_format_i18n( $minimum_site_name_length ) ) ); } // do not allow users to create a blog that conflicts with a page on the main blog. if ( !is_subdomain_install() && $wpdb->get_var( $wpdb->prepare( "SELECT post_name FROM " . $wpdb->get_blog_prefix( $current_network->site_id ) . "posts WHERE post_type = 'page' AND post_name = %s", $blogname ) ) ) $errors->add( 'blogname', __( 'Sorry, you may not use that site name.' ) ); // all numeric? if ( preg_match( '/^[0-9]*$/', $blogname ) ) $errors->add('blogname', __('Sorry, site names must have letters too!')); /** * Filters the new site name during registration. * * The name is the site's subdomain or the site's subdirectory * path depending on the network settings. * * @since MU * * @param string $blogname Site name. */ $blogname = apply_filters( 'newblogname', $blogname ); $blog_title = wp_unslash( $blog_title ); if ( empty( $blog_title ) ) $errors->add('blog_title', __( 'Please enter a site title.' ) ); // Check if the domain/path has been used already. if ( is_subdomain_install() ) { $mydomain = $blogname . '.' . preg_replace( '|^www\.|', '', $domain ); $path = $base; } else { $mydomain = "$domain"; $path = $base.$blogname.'/'; } if ( domain_exists($mydomain, $path, $current_network->id) ) $errors->add( 'blogname', __( 'Sorry, that site already exists!' ) ); if ( username_exists( $blogname ) ) { if ( ! is_object( $user ) || ( is_object($user) && ( $user->user_login != $blogname ) ) ) $errors->add( 'blogname', __( 'Sorry, that site is reserved!' ) ); } // Has someone already signed up for this domain? $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE domain = %s AND path = %s", $mydomain, $path) ); // TODO: Check email too? if ( ! empty($signup) ) { $diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered); // If registered more than two days ago, cancel registration and let this signup go through. if ( $diff > 2 * DAY_IN_SECONDS ) $wpdb->delete( $wpdb->signups, array( 'domain' => $mydomain , 'path' => $path ) ); else $errors->add('blogname', __('That site is currently reserved but may be available in a couple days.')); } $result = array('domain' => $mydomain, 'path' => $path, 'blogname' => $blogname, 'blog_title' => $blog_title, 'user' => $user, 'errors' => $errors); /** * Filters site details and error messages following registration. * * @since MU * * @param array $result { * Array of domain, path, blog name, blog title, user and error messages. * * @type string $domain Domain for the site. * @type string $path Path for the site. Used in subdirectory installs. * @type string $blogname The unique site name (slug). * @type string $blog_title Blog title. * @type string|WP_User $user By default, an empty string. A user object if provided. * @type WP_Error $errors WP_Error containing any errors found. * } */ return apply_filters( 'wpmu_validate_blog_signup', $result ); } /** * Record site signup information for future activation. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $domain The requested domain. * @param string $path The requested path. * @param string $title The requested site title. * @param string $user The user's requested login name. * @param string $user_email The user's email address. * @param array $meta Optional. Signup meta data. By default, contains the requested privacy setting and lang_id. */ function wpmu_signup_blog( $domain, $path, $title, $user, $user_email, $meta = array() ) { global $wpdb; $key = substr( md5( time() . wp_rand() . $domain ), 0, 16 ); /** * Filters the metadata for a site signup. * * The metadata will be serialized prior to storing it in the database. * * @since 4.8.0 * * @param array $meta Signup meta data. Default empty array. * @param string $domain The requested domain. * @param string $path The requested path. * @param string $title The requested site title. * @param string $user The user's requested login name. * @param string $user_email The user's email address. * @param string $key The user's activation key. */ $meta = apply_filters( 'signup_site_meta', $meta, $domain, $path, $title, $user, $user_email, $key ); $wpdb->insert( $wpdb->signups, array( 'domain' => $domain, 'path' => $path, 'title' => $title, 'user_login' => $user, 'user_email' => $user_email, 'registered' => current_time('mysql', true), 'activation_key' => $key, 'meta' => serialize( $meta ) ) ); /** * Fires after site signup information has been written to the database. * * @since 4.4.0 * * @param string $domain The requested domain. * @param string $path The requested path. * @param string $title The requested site title. * @param string $user The user's requested login name. * @param string $user_email The user's email address. * @param string $key The user's activation key. * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ do_action( 'after_signup_site', $domain, $path, $title, $user, $user_email, $key, $meta ); } /** * Record user signup information for future activation. * * This function is used when user registration is open but * new site registration is not. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $user The user's requested login name. * @param string $user_email The user's email address. * @param array $meta Optional. Signup meta data. Default empty array. */ function wpmu_signup_user( $user, $user_email, $meta = array() ) { global $wpdb; // Format data $user = preg_replace( '/\s+/', '', sanitize_user( $user, true ) ); $user_email = sanitize_email( $user_email ); $key = substr( md5( time() . wp_rand() . $user_email ), 0, 16 ); /** * Filters the metadata for a user signup. * * The metadata will be serialized prior to storing it in the database. * * @since 4.8.0 * * @param array $meta Signup meta data. Default empty array. * @param string $user The user's requested login name. * @param string $user_email The user's email address. * @param string $key The user's activation key. */ $meta = apply_filters( 'signup_user_meta', $meta, $user, $user_email, $key ); $wpdb->insert( $wpdb->signups, array( 'domain' => '', 'path' => '', 'title' => '', 'user_login' => $user, 'user_email' => $user_email, 'registered' => current_time('mysql', true), 'activation_key' => $key, 'meta' => serialize( $meta ) ) ); /** * Fires after a user's signup information has been written to the database. * * @since 4.4.0 * * @param string $user The user's requested login name. * @param string $user_email The user's email address. * @param string $key The user's activation key. * @param array $meta Signup meta data. Default empty array. */ do_action( 'after_signup_user', $user, $user_email, $key, $meta ); } /** * Notify user of signup success. * * This is the notification function used when site registration * is enabled. * * Filter {@see 'wpmu_signup_blog_notification'} to bypass this function or * replace it with your own notification behavior. * * Filter {@see 'wpmu_signup_blog_notification_email'} and * {@see 'wpmu_signup_blog_notification_subject'} to change the content * and subject line of the email sent to newly registered users. * * @since MU * * @param string $domain The new blog domain. * @param string $path The new blog path. * @param string $title The site title. * @param string $user_login The user's login name. * @param string $user_email The user's email address. * @param string $key The activation key created in wpmu_signup_blog() * @param array $meta Optional. Signup meta data. By default, contains the requested privacy setting and lang_id. * @return bool */ function wpmu_signup_blog_notification( $domain, $path, $title, $user_login, $user_email, $key, $meta = array() ) { /** * Filters whether to bypass the new site email notification. * * @since MU * * @param string|bool $domain Site domain. * @param string $path Site path. * @param string $title Site title. * @param string $user_login User login name. * @param string $user_email User email address. * @param string $key Activation key created in wpmu_signup_blog(). * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ if ( ! apply_filters( 'wpmu_signup_blog_notification', $domain, $path, $title, $user_login, $user_email, $key, $meta ) ) { return false; } // Send email with activation link. if ( !is_subdomain_install() || get_current_network_id() != 1 ) $activate_url = network_site_url("wp-activate.php?key=$key"); else $activate_url = "http://{$domain}{$path}wp-activate.php?key=$key"; // @todo use *_url() API $activate_url = esc_url($activate_url); $admin_email = get_site_option( 'admin_email' ); if ( $admin_email == '' ) $admin_email = 'support@' . $_SERVER['SERVER_NAME']; $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) ); $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n"; $user = get_user_by( 'login', $user_login ); $switched_locale = switch_to_locale( get_user_locale( $user ) ); $message = sprintf( /** * Filters the message content of the new blog notification email. * * Content should be formatted for transmission via wp_mail(). * * @since MU * * @param string $content Content of the notification email. * @param string $domain Site domain. * @param string $path Site path. * @param string $title Site title. * @param string $user_login User login name. * @param string $user_email User email address. * @param string $key Activation key created in wpmu_signup_blog(). * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ apply_filters( 'wpmu_signup_blog_notification_email', __( "To activate your blog, please click the following link:\n\n%s\n\nAfter you activate, you will receive *another email* with your login.\n\nAfter you activate, you can visit your site here:\n\n%s" ), $domain, $path, $title, $user_login, $user_email, $key, $meta ), $activate_url, esc_url( "http://{$domain}{$path}" ), $key ); // TODO: Don't hard code activation link. $subject = sprintf( /** * Filters the subject of the new blog notification email. * * @since MU * * @param string $subject Subject of the notification email. * @param string $domain Site domain. * @param string $path Site path. * @param string $title Site title. * @param string $user_login User login name. * @param string $user_email User email address. * @param string $key Activation key created in wpmu_signup_blog(). * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ apply_filters( 'wpmu_signup_blog_notification_subject', /* translators: New site notification email subject. 1: Network name, 2: New site URL */ _x( '[%1$s] Activate %2$s', 'New site notification email subject' ), $domain, $path, $title, $user_login, $user_email, $key, $meta ), $from_name, esc_url( 'http://' . $domain . $path ) ); wp_mail( $user_email, wp_specialchars_decode( $subject ), $message, $message_headers ); if ( $switched_locale ) { restore_previous_locale(); } return true; } /** * Notify user of signup success. * * This is the notification function used when no new site has * been requested. * * Filter {@see 'wpmu_signup_user_notification'} to bypass this function or * replace it with your own notification behavior. * * Filter {@see 'wpmu_signup_user_notification_email'} and * {@see 'wpmu_signup_user_notification_subject'} to change the content * and subject line of the email sent to newly registered users. * * @since MU * * @param string $user_login The user's login name. * @param string $user_email The user's email address. * @param string $key The activation key created in wpmu_signup_user() * @param array $meta Optional. Signup meta data. Default empty array. * @return bool */ function wpmu_signup_user_notification( $user_login, $user_email, $key, $meta = array() ) { /** * Filters whether to bypass the email notification for new user sign-up. * * @since MU * * @param string $user_login User login name. * @param string $user_email User email address. * @param string $key Activation key created in wpmu_signup_user(). * @param array $meta Signup meta data. Default empty array. */ if ( ! apply_filters( 'wpmu_signup_user_notification', $user_login, $user_email, $key, $meta ) ) return false; $user = get_user_by( 'login', $user_login ); $switched_locale = switch_to_locale( get_user_locale( $user ) ); // Send email with activation link. $admin_email = get_site_option( 'admin_email' ); if ( $admin_email == '' ) $admin_email = 'support@' . $_SERVER['SERVER_NAME']; $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) ); $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n"; $message = sprintf( /** * Filters the content of the notification email for new user sign-up. * * Content should be formatted for transmission via wp_mail(). * * @since MU * * @param string $content Content of the notification email. * @param string $user_login User login name. * @param string $user_email User email address. * @param string $key Activation key created in wpmu_signup_user(). * @param array $meta Signup meta data. Default empty array. */ apply_filters( 'wpmu_signup_user_notification_email', __( "To activate your user, please click the following link:\n\n%s\n\nAfter you activate, you will receive *another email* with your login." ), $user_login, $user_email, $key, $meta ), site_url( "wp-activate.php?key=$key" ) ); // TODO: Don't hard code activation link. $subject = sprintf( /** * Filters the subject of the notification email of new user signup. * * @since MU * * @param string $subject Subject of the notification email. * @param string $user_login User login name. * @param string $user_email User email address. * @param string $key Activation key created in wpmu_signup_user(). * @param array $meta Signup meta data. Default empty array. */ apply_filters( 'wpmu_signup_user_notification_subject', /* translators: New user notification email subject. 1: Network name, 2: New user login */ _x( '[%1$s] Activate %2$s', 'New user notification email subject' ), $user_login, $user_email, $key, $meta ), $from_name, $user_login ); wp_mail( $user_email, wp_specialchars_decode( $subject ), $message, $message_headers ); if ( $switched_locale ) { restore_previous_locale(); } return true; } /** * Activate a signup. * * Hook to {@see 'wpmu_activate_user'} or {@see 'wpmu_activate_blog'} for events * that should happen only when users or sites are self-created (since * those actions are not called when users and sites are created * by a Super Admin). * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $key The activation key provided to the user. * @return array|WP_Error An array containing information about the activated user and/or blog */ function wpmu_activate_signup($key) { global $wpdb; $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE activation_key = %s", $key) ); if ( empty( $signup ) ) return new WP_Error( 'invalid_key', __( 'Invalid activation key.' ) ); if ( $signup->active ) { if ( empty( $signup->domain ) ) return new WP_Error( 'already_active', __( 'The user is already active.' ), $signup ); else return new WP_Error( 'already_active', __( 'The site is already active.' ), $signup ); } $meta = maybe_unserialize($signup->meta); $password = wp_generate_password( 12, false ); $user_id = username_exists($signup->user_login); if ( ! $user_id ) $user_id = wpmu_create_user($signup->user_login, $password, $signup->user_email); else $user_already_exists = true; if ( ! $user_id ) return new WP_Error('create_user', __('Could not create user'), $signup); $now = current_time('mysql', true); if ( empty($signup->domain) ) { $wpdb->update( $wpdb->signups, array('active' => 1, 'activated' => $now), array('activation_key' => $key) ); if ( isset( $user_already_exists ) ) return new WP_Error( 'user_already_exists', __( 'That username is already activated.' ), $signup); /** * Fires immediately after a new user is activated. * * @since MU * * @param int $user_id User ID. * @param int $password User password. * @param array $meta Signup meta data. */ do_action( 'wpmu_activate_user', $user_id, $password, $meta ); return array( 'user_id' => $user_id, 'password' => $password, 'meta' => $meta ); } $blog_id = wpmu_create_blog( $signup->domain, $signup->path, $signup->title, $user_id, $meta, $wpdb->siteid ); // TODO: What to do if we create a user but cannot create a blog? if ( is_wp_error($blog_id) ) { // If blog is taken, that means a previous attempt to activate this blog failed in between creating the blog and // setting the activation flag. Let's just set the active flag and instruct the user to reset their password. if ( 'blog_taken' == $blog_id->get_error_code() ) { $blog_id->add_data( $signup ); $wpdb->update( $wpdb->signups, array( 'active' => 1, 'activated' => $now ), array( 'activation_key' => $key ) ); } return $blog_id; } $wpdb->update( $wpdb->signups, array('active' => 1, 'activated' => $now), array('activation_key' => $key) ); /** * Fires immediately after a site is activated. * * @since MU * * @param int $blog_id Blog ID. * @param int $user_id User ID. * @param int $password User password. * @param string $signup_title Site title. * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ do_action( 'wpmu_activate_blog', $blog_id, $user_id, $password, $signup->title, $meta ); return array('blog_id' => $blog_id, 'user_id' => $user_id, 'password' => $password, 'title' => $signup->title, 'meta' => $meta); } /** * Create a user. * * This function runs when a user self-registers as well as when * a Super Admin creates a new user. Hook to {@see 'wpmu_new_user'} for events * that should affect all new users, but only on Multisite (otherwise * use {@see'user_register'}). * * @since MU * * @param string $user_name The new user's login name. * @param string $password The new user's password. * @param string $email The new user's email address. * @return int|false Returns false on failure, or int $user_id on success */ function wpmu_create_user( $user_name, $password, $email ) { $user_name = preg_replace( '/\s+/', '', sanitize_user( $user_name, true ) ); $user_id = wp_create_user( $user_name, $password, $email ); if ( is_wp_error( $user_id ) ) return false; // Newly created users have no roles or caps until they are added to a blog. delete_user_option( $user_id, 'capabilities' ); delete_user_option( $user_id, 'user_level' ); /** * Fires immediately after a new user is created. * * @since MU * * @param int $user_id User ID. */ do_action( 'wpmu_new_user', $user_id ); return $user_id; } /** * Create a site. * * This function runs when a user self-registers a new site as well * as when a Super Admin creates a new site. Hook to {@see 'wpmu_new_blog'} * for events that should affect all new sites. * * On subdirectory installs, $domain is the same as the main site's * domain, and the path is the subdirectory name (eg 'example.com' * and '/blog1/'). On subdomain installs, $domain is the new subdomain + * root domain (eg 'blog1.example.com'), and $path is '/'. * * @since MU * * @param string $domain The new site's domain. * @param string $path The new site's path. * @param string $title The new site's title. * @param int $user_id The user ID of the new site's admin. * @param array $meta Optional. Used to set initial site options. * @param int $site_id Optional. Only relevant on multi-network installs. * @return int|WP_Error Returns WP_Error object on failure, int $blog_id on success */ function wpmu_create_blog( $domain, $path, $title, $user_id, $meta = array(), $site_id = 1 ) { $defaults = array( 'public' => 0, 'WPLANG' => get_site_option( 'WPLANG' ), ); $meta = wp_parse_args( $meta, $defaults ); $domain = preg_replace( '/\s+/', '', sanitize_user( $domain, true ) ); if ( is_subdomain_install() ) $domain = str_replace( '@', '', $domain ); $title = strip_tags( $title ); $user_id = (int) $user_id; if ( empty($path) ) $path = '/'; // Check if the domain has been used already. We should return an error message. if ( domain_exists($domain, $path, $site_id) ) return new WP_Error( 'blog_taken', __( 'Sorry, that site already exists!' ) ); if ( ! wp_installing() ) { wp_installing( true ); } if ( ! $blog_id = insert_blog($domain, $path, $site_id) ) return new WP_Error('insert_blog', __('Could not create site.')); switch_to_blog($blog_id); install_blog($blog_id, $title); wp_install_defaults($user_id); add_user_to_blog($blog_id, $user_id, 'administrator'); foreach ( $meta as $key => $value ) { if ( in_array( $key, array( 'public', 'archived', 'mature', 'spam', 'deleted', 'lang_id' ) ) ) update_blog_status( $blog_id, $key, $value ); else update_option( $key, $value ); } update_option( 'blog_public', (int) $meta['public'] ); if ( ! is_super_admin( $user_id ) && ! get_user_meta( $user_id, 'primary_blog', true ) ) update_user_meta( $user_id, 'primary_blog', $blog_id ); restore_current_blog(); /** * Fires immediately after a new site is created. * * @since MU * * @param int $blog_id Blog ID. * @param int $user_id User ID. * @param string $domain Site domain. * @param string $path Site path. * @param int $site_id Site ID. Only relevant on multi-network installs. * @param array $meta Meta data. Used to set initial site options. */ do_action( 'wpmu_new_blog', $blog_id, $user_id, $domain, $path, $site_id, $meta ); wp_cache_set( 'last_changed', microtime(), 'sites' ); return $blog_id; } /** * Notifies the network admin that a new site has been activated. * * Filter {@see 'newblog_notify_siteadmin'} to change the content of * the notification email. * * @since MU * * @param int $blog_id The new site's ID. * @param string $deprecated Not used. * @return bool */ function newblog_notify_siteadmin( $blog_id, $deprecated = '' ) { if ( get_site_option( 'registrationnotification' ) != 'yes' ) return false; $email = get_site_option( 'admin_email' ); if ( is_email($email) == false ) return false; $options_site_url = esc_url(network_admin_url('settings.php')); switch_to_blog( $blog_id ); $blogname = get_option( 'blogname' ); $siteurl = site_url(); restore_current_blog(); /* translators: New site notification email. 1: Site URL, 2: User IP address, 3: Settings screen URL */ $msg = sprintf( __( 'New Site: %1$s URL: %2$s Remote IP: %3$s Disable these notifications: %4$s' ), $blogname, $siteurl, wp_unslash( $_SERVER['REMOTE_ADDR'] ), $options_site_url); /** * Filters the message body of the new site activation email sent * to the network administrator. * * @since MU * * @param string $msg Email body. */ $msg = apply_filters( 'newblog_notify_siteadmin', $msg ); wp_mail( $email, sprintf( __( 'New Site Registration: %s' ), $siteurl ), $msg ); return true; } /** * Notifies the network admin that a new user has been activated. * * Filter {@see 'newuser_notify_siteadmin'} to change the content of * the notification email. * * @since MU * * @param int $user_id The new user's ID. * @return bool */ function newuser_notify_siteadmin( $user_id ) { if ( get_site_option( 'registrationnotification' ) != 'yes' ) return false; $email = get_site_option( 'admin_email' ); if ( is_email($email) == false ) return false; $user = get_userdata( $user_id ); $options_site_url = esc_url(network_admin_url('settings.php')); /* translators: New user notification email. 1: User login, 2: User IP address, 3: Settings screen URL */ $msg = sprintf(__('New User: %1$s Remote IP: %2$s Disable these notifications: %3$s'), $user->user_login, wp_unslash( $_SERVER['REMOTE_ADDR'] ), $options_site_url); /** * Filters the message body of the new user activation email sent * to the network administrator. * * @since MU * * @param string $msg Email body. * @param WP_User $user WP_User instance of the new user. */ $msg = apply_filters( 'newuser_notify_siteadmin', $msg, $user ); wp_mail( $email, sprintf(__('New User Registration: %s'), $user->user_login), $msg ); return true; } /** * Check whether a blogname is already taken. * * Used during the new site registration process to ensure * that each blogname is unique. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $domain The domain to be checked. * @param string $path The path to be checked. * @param int $site_id Optional. Relevant only on multi-network installs. * @return int */ function domain_exists($domain, $path, $site_id = 1) { $path = trailingslashit( $path ); $args = array( 'network_id' => $site_id, 'domain' => $domain, 'path' => $path, 'fields' => 'ids', ); $result = get_sites( $args ); $result = array_shift( $result ); /** * Filters whether a blogname is taken. * * @since 3.5.0 * * @param int|null $result The blog_id if the blogname exists, null otherwise. * @param string $domain Domain to be checked. * @param string $path Path to be checked. * @param int $site_id Site ID. Relevant only on multi-network installs. */ return apply_filters( 'domain_exists', $result, $domain, $path, $site_id ); } /** * Store basic site info in the blogs table. * * This function creates a row in the wp_blogs table and returns * the new blog's ID. It is the first step in creating a new blog. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $domain The domain of the new site. * @param string $path The path of the new site. * @param int $site_id Unless you're running a multi-network install, be sure to set this value to 1. * @return int|false The ID of the new row */ function insert_blog($domain, $path, $site_id) { global $wpdb; $path = trailingslashit($path); $site_id = (int) $site_id; $result = $wpdb->insert( $wpdb->blogs, array('site_id' => $site_id, 'domain' => $domain, 'path' => $path, 'registered' => current_time('mysql')) ); if ( ! $result ) return false; $blog_id = $wpdb->insert_id; refresh_blog_details( $blog_id ); wp_maybe_update_network_site_counts(); return $blog_id; } /** * Install an empty blog. * * Creates the new blog tables and options. If calling this function * directly, be sure to use switch_to_blog() first, so that $wpdb * points to the new blog. * * @since MU * * @global wpdb $wpdb * @global WP_Roles $wp_roles * * @param int $blog_id The value returned by insert_blog(). * @param string $blog_title The title of the new site. */ function install_blog( $blog_id, $blog_title = '' ) { global $wpdb, $wp_roles; // Cast for security $blog_id = (int) $blog_id; require_once( ABSPATH . 'wp-admin/includes/upgrade.php' ); $suppress = $wpdb->suppress_errors(); if ( $wpdb->get_results( "DESCRIBE {$wpdb->posts}" ) ) die( '

' . __( 'Already Installed' ) . '

' . __( 'You appear to have already installed WordPress. To reinstall please clear your old database tables first.' ) . '

' ); $wpdb->suppress_errors( $suppress ); $url = get_blogaddress_by_id( $blog_id ); // Set everything up make_db_current_silent( 'blog' ); populate_options(); populate_roles(); // populate_roles() clears previous role definitions so we start over. $wp_roles = new WP_Roles(); $siteurl = $home = untrailingslashit( $url ); if ( ! is_subdomain_install() ) { if ( 'https' === parse_url( get_site_option( 'siteurl' ), PHP_URL_SCHEME ) ) { $siteurl = set_url_scheme( $siteurl, 'https' ); } if ( 'https' === parse_url( get_home_url( get_network()->site_id ), PHP_URL_SCHEME ) ) { $home = set_url_scheme( $home, 'https' ); } } update_option( 'siteurl', $siteurl ); update_option( 'home', $home ); if ( get_site_option( 'ms_files_rewriting' ) ) update_option( 'upload_path', UPLOADBLOGSDIR . "/$blog_id/files" ); else update_option( 'upload_path', get_blog_option( get_network()->site_id, 'upload_path' ) ); update_option( 'blogname', wp_unslash( $blog_title ) ); update_option( 'admin_email', '' ); // remove all perms $table_prefix = $wpdb->get_blog_prefix(); delete_metadata( 'user', 0, $table_prefix . 'user_level', null, true ); // delete all delete_metadata( 'user', 0, $table_prefix . 'capabilities', null, true ); // delete all } /** * Set blog defaults. * * This function creates a row in the wp_blogs table. * * @since MU * @deprecated MU * @deprecated Use wp_install_defaults() * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $blog_id Ignored in this function. * @param int $user_id */ function install_blog_defaults($blog_id, $user_id) { global $wpdb; require_once( ABSPATH . 'wp-admin/includes/upgrade.php' ); $suppress = $wpdb->suppress_errors(); wp_install_defaults($user_id); $wpdb->suppress_errors( $suppress ); } /** * Notify a user that their blog activation has been successful. * * Filter {@see 'wpmu_welcome_notification'} to disable or bypass. * * Filter {@see 'update_welcome_email'} and {@see 'update_welcome_subject'} to * modify the content and subject line of the notification email. * * @since MU * * @param int $blog_id Blog ID. * @param int $user_id User ID. * @param string $password User password. * @param string $title Site title. * @param array $meta Optional. Signup meta data. By default, contains the requested privacy setting and lang_id. * @return bool */ function wpmu_welcome_notification( $blog_id, $user_id, $password, $title, $meta = array() ) { $current_network = get_network(); /** * Filters whether to bypass the welcome email after site activation. * * Returning false disables the welcome email. * * @since MU * * @param int|bool $blog_id Blog ID. * @param int $user_id User ID. * @param string $password User password. * @param string $title Site title. * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ if ( ! apply_filters( 'wpmu_welcome_notification', $blog_id, $user_id, $password, $title, $meta ) ) return false; $user = get_userdata( $user_id ); $switched_locale = switch_to_locale( get_user_locale( $user ) ); $welcome_email = get_site_option( 'welcome_email' ); if ( $welcome_email == false ) { /* translators: Do not translate USERNAME, SITE_NAME, BLOG_URL, PASSWORD: those are placeholders. */ $welcome_email = __( 'Howdy USERNAME, Your new SITE_NAME site has been successfully set up at: BLOG_URL You can log in to the administrator account with the following information: Username: USERNAME Password: PASSWORD Log in here: BLOG_URLwp-login.php We hope you enjoy your new site. Thanks! --The Team @ SITE_NAME' ); } $url = get_blogaddress_by_id($blog_id); $welcome_email = str_replace( 'SITE_NAME', $current_network->site_name, $welcome_email ); $welcome_email = str_replace( 'BLOG_TITLE', $title, $welcome_email ); $welcome_email = str_replace( 'BLOG_URL', $url, $welcome_email ); $welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email ); $welcome_email = str_replace( 'PASSWORD', $password, $welcome_email ); /** * Filters the content of the welcome email after site activation. * * Content should be formatted for transmission via wp_mail(). * * @since MU * * @param string $welcome_email Message body of the email. * @param int $blog_id Blog ID. * @param int $user_id User ID. * @param string $password User password. * @param string $title Site title. * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. */ $welcome_email = apply_filters( 'update_welcome_email', $welcome_email, $blog_id, $user_id, $password, $title, $meta ); $admin_email = get_site_option( 'admin_email' ); if ( $admin_email == '' ) $admin_email = 'support@' . $_SERVER['SERVER_NAME']; $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) ); $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n"; $message = $welcome_email; if ( empty( $current_network->site_name ) ) $current_network->site_name = 'WordPress'; /* translators: New site notification email subject. 1: Network name, 2: New site name */ $subject = __( 'New %1$s Site: %2$s' ); /** * Filters the subject of the welcome email after site activation. * * @since MU * * @param string $subject Subject of the email. */ $subject = apply_filters( 'update_welcome_subject', sprintf( $subject, $current_network->site_name, wp_unslash( $title ) ) ); wp_mail( $user->user_email, wp_specialchars_decode( $subject ), $message, $message_headers ); if ( $switched_locale ) { restore_previous_locale(); } return true; } /** * Notify a user that their account activation has been successful. * * Filter {@see 'wpmu_welcome_user_notification'} to disable or bypass. * * Filter {@see 'update_welcome_user_email'} and {@see 'update_welcome_user_subject'} to * modify the content and subject line of the notification email. * * @since MU * * @param int $user_id User ID. * @param string $password User password. * @param array $meta Optional. Signup meta data. Default empty array. * @return bool */ function wpmu_welcome_user_notification( $user_id, $password, $meta = array() ) { $current_network = get_network(); /** * Filters whether to bypass the welcome email after user activation. * * Returning false disables the welcome email. * * @since MU * * @param int $user_id User ID. * @param string $password User password. * @param array $meta Signup meta data. Default empty array. */ if ( ! apply_filters( 'wpmu_welcome_user_notification', $user_id, $password, $meta ) ) return false; $welcome_email = get_site_option( 'welcome_user_email' ); $user = get_userdata( $user_id ); $switched_locale = switch_to_locale( get_user_locale( $user ) ); /** * Filters the content of the welcome email after user activation. * * Content should be formatted for transmission via wp_mail(). * * @since MU * * @param string $welcome_email The message body of the account activation success email. * @param int $user_id User ID. * @param string $password User password. * @param array $meta Signup meta data. Default empty array. */ $welcome_email = apply_filters( 'update_welcome_user_email', $welcome_email, $user_id, $password, $meta ); $welcome_email = str_replace( 'SITE_NAME', $current_network->site_name, $welcome_email ); $welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email ); $welcome_email = str_replace( 'PASSWORD', $password, $welcome_email ); $welcome_email = str_replace( 'LOGINLINK', wp_login_url(), $welcome_email ); $admin_email = get_site_option( 'admin_email' ); if ( $admin_email == '' ) $admin_email = 'support@' . $_SERVER['SERVER_NAME']; $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) ); $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n"; $message = $welcome_email; if ( empty( $current_network->site_name ) ) $current_network->site_name = 'WordPress'; /* translators: New user notification email subject. 1: Network name, 2: New user login */ $subject = __( 'New %1$s User: %2$s' ); /** * Filters the subject of the welcome email after user activation. * * @since MU * * @param string $subject Subject of the email. */ $subject = apply_filters( 'update_welcome_user_subject', sprintf( $subject, $current_network->site_name, $user->user_login) ); wp_mail( $user->user_email, wp_specialchars_decode( $subject ), $message, $message_headers ); if ( $switched_locale ) { restore_previous_locale(); } return true; } /** * Get the current network. * * Returns an object containing the 'id', 'domain', 'path', and 'site_name' * properties of the network being viewed. * * @see wpmu_current_site() * * @since MU * * @global WP_Network $current_site * * @return WP_Network */ function get_current_site() { global $current_site; return $current_site; } /** * Get a user's most recent post. * * Walks through each of a user's blogs to find the post with * the most recent post_date_gmt. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $user_id * @return array Contains the blog_id, post_id, post_date_gmt, and post_gmt_ts */ function get_most_recent_post_of_user( $user_id ) { global $wpdb; $user_blogs = get_blogs_of_user( (int) $user_id ); $most_recent_post = array(); // Walk through each blog and get the most recent post // published by $user_id foreach ( (array) $user_blogs as $blog ) { $prefix = $wpdb->get_blog_prefix( $blog->userblog_id ); $recent_post = $wpdb->get_row( $wpdb->prepare("SELECT ID, post_date_gmt FROM {$prefix}posts WHERE post_author = %d AND post_type = 'post' AND post_status = 'publish' ORDER BY post_date_gmt DESC LIMIT 1", $user_id ), ARRAY_A); // Make sure we found a post if ( isset($recent_post['ID']) ) { $post_gmt_ts = strtotime($recent_post['post_date_gmt']); // If this is the first post checked or if this post is // newer than the current recent post, make it the new // most recent post. if ( !isset($most_recent_post['post_gmt_ts']) || ( $post_gmt_ts > $most_recent_post['post_gmt_ts'] ) ) { $most_recent_post = array( 'blog_id' => $blog->userblog_id, 'post_id' => $recent_post['ID'], 'post_date_gmt' => $recent_post['post_date_gmt'], 'post_gmt_ts' => $post_gmt_ts ); } } } return $most_recent_post; } // Misc functions /** * Get the size of a directory. * * A helper function that is used primarily to check whether * a blog has exceeded its allowed upload space. * * @since MU * * @param string $directory Full path of a directory. * @return int Size of the directory in MB. */ function get_dirsize( $directory ) { $dirsize = get_transient( 'dirsize_cache' ); if ( is_array( $dirsize ) && isset( $dirsize[ $directory ][ 'size' ] ) ) return $dirsize[ $directory ][ 'size' ]; if ( ! is_array( $dirsize ) ) $dirsize = array(); // Exclude individual site directories from the total when checking the main site, // as they are subdirectories and should not be counted. if ( is_main_site() ) { $dirsize[ $directory ][ 'size' ] = recurse_dirsize( $directory, $directory . '/sites' ); } else { $dirsize[ $directory ][ 'size' ] = recurse_dirsize( $directory ); } set_transient( 'dirsize_cache', $dirsize, HOUR_IN_SECONDS ); return $dirsize[ $directory ][ 'size' ]; } /** * Get the size of a directory recursively. * * Used by get_dirsize() to get a directory's size when it contains * other directories. * * @since MU * @since 4.3.0 $exclude parameter added. * * @param string $directory Full path of a directory. * @param string $exclude Optional. Full path of a subdirectory to exclude from the total. * @return int|false Size in MB if a valid directory. False if not. */ function recurse_dirsize( $directory, $exclude = null ) { $size = 0; $directory = untrailingslashit( $directory ); if ( ! file_exists( $directory ) || ! is_dir( $directory ) || ! is_readable( $directory ) || $directory === $exclude ) { return false; } if ($handle = opendir($directory)) { while(($file = readdir($handle)) !== false) { $path = $directory.'/'.$file; if ($file != '.' && $file != '..') { if (is_file($path)) { $size += filesize($path); } elseif (is_dir($path)) { $handlesize = recurse_dirsize( $path, $exclude ); if ($handlesize > 0) $size += $handlesize; } } } closedir($handle); } return $size; } /** * Check an array of MIME types against a whitelist. * * WordPress ships with a set of allowed upload filetypes, * which is defined in wp-includes/functions.php in * get_allowed_mime_types(). This function is used to filter * that list against the filetype whitelist provided by Multisite * Super Admins at wp-admin/network/settings.php. * * @since MU * * @param array $mimes * @return array */ function check_upload_mimes( $mimes ) { $site_exts = explode( ' ', get_site_option( 'upload_filetypes', 'jpg jpeg png gif' ) ); $site_mimes = array(); foreach ( $site_exts as $ext ) { foreach ( $mimes as $ext_pattern => $mime ) { if ( $ext != '' && strpos( $ext_pattern, $ext ) !== false ) $site_mimes[$ext_pattern] = $mime; } } return $site_mimes; } /** * Update a blog's post count. * * WordPress MS stores a blog's post count as an option so as * to avoid extraneous COUNTs when a blog's details are fetched * with get_site(). This function is called when posts are published * or unpublished to make sure the count stays current. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $deprecated Not used. */ function update_posts_count( $deprecated = '' ) { global $wpdb; update_option( 'post_count', (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->posts} WHERE post_status = 'publish' and post_type = 'post'" ) ); } /** * Logs user registrations. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $blog_id * @param int $user_id */ function wpmu_log_new_registrations( $blog_id, $user_id ) { global $wpdb; $user = get_userdata( (int) $user_id ); if ( $user ) $wpdb->insert( $wpdb->registration_log, array('email' => $user->user_email, 'IP' => preg_replace( '/[^0-9., ]/', '', wp_unslash( $_SERVER['REMOTE_ADDR'] ) ), 'blog_id' => $blog_id, 'date_registered' => current_time('mysql')) ); } /** * Maintains a canonical list of terms by syncing terms created for each blog with the global terms table. * * @since 3.0.0 * * @see term_id_filter * * @global wpdb $wpdb WordPress database abstraction object. * @staticvar int $global_terms_recurse * * @param int $term_id An ID for a term on the current blog. * @param string $deprecated Not used. * @return int An ID from the global terms table mapped from $term_id. */ function global_terms( $term_id, $deprecated = '' ) { global $wpdb; static $global_terms_recurse = null; if ( !global_terms_enabled() ) return $term_id; // prevent a race condition $recurse_start = false; if ( $global_terms_recurse === null ) { $recurse_start = true; $global_terms_recurse = 1; } elseif ( 10 < $global_terms_recurse++ ) { return $term_id; } $term_id = intval( $term_id ); $c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->terms WHERE term_id = %d", $term_id ) ); $global_id = $wpdb->get_var( $wpdb->prepare( "SELECT cat_ID FROM $wpdb->sitecategories WHERE category_nicename = %s", $c->slug ) ); if ( $global_id == null ) { $used_global_id = $wpdb->get_var( $wpdb->prepare( "SELECT cat_ID FROM $wpdb->sitecategories WHERE cat_ID = %d", $c->term_id ) ); if ( null == $used_global_id ) { $wpdb->insert( $wpdb->sitecategories, array( 'cat_ID' => $term_id, 'cat_name' => $c->name, 'category_nicename' => $c->slug ) ); $global_id = $wpdb->insert_id; if ( empty( $global_id ) ) return $term_id; } else { $max_global_id = $wpdb->get_var( "SELECT MAX(cat_ID) FROM $wpdb->sitecategories" ); $max_local_id = $wpdb->get_var( "SELECT MAX(term_id) FROM $wpdb->terms" ); $new_global_id = max( $max_global_id, $max_local_id ) + mt_rand( 100, 400 ); $wpdb->insert( $wpdb->sitecategories, array( 'cat_ID' => $new_global_id, 'cat_name' => $c->name, 'category_nicename' => $c->slug ) ); $global_id = $wpdb->insert_id; } } elseif ( $global_id != $term_id ) { $local_id = $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->terms WHERE term_id = %d", $global_id ) ); if ( null != $local_id ) { global_terms( $local_id ); if ( 10 < $global_terms_recurse ) { $global_id = $term_id; } } } if ( $global_id != $term_id ) { if ( get_option( 'default_category' ) == $term_id ) update_option( 'default_category', $global_id ); $wpdb->update( $wpdb->terms, array('term_id' => $global_id), array('term_id' => $term_id) ); $wpdb->update( $wpdb->term_taxonomy, array('term_id' => $global_id), array('term_id' => $term_id) ); $wpdb->update( $wpdb->term_taxonomy, array('parent' => $global_id), array('parent' => $term_id) ); clean_term_cache($term_id); } if ( $recurse_start ) $global_terms_recurse = null; return $global_id; } /** * Ensure that the current site's domain is listed in the allowed redirect host list. * * @see wp_validate_redirect() * @since MU * * @param array|string $deprecated Not used. * @return array The current site's domain */ function redirect_this_site( $deprecated = '' ) { return array( get_network()->domain ); } /** * Check whether an upload is too big. * * @since MU * * @blessed * * @param array $upload * @return string|array If the upload is under the size limit, $upload is returned. Otherwise returns an error message. */ function upload_is_file_too_big( $upload ) { if ( ! is_array( $upload ) || defined( 'WP_IMPORTING' ) || get_site_option( 'upload_space_check_disabled' ) ) return $upload; if ( strlen( $upload['bits'] ) > ( KB_IN_BYTES * get_site_option( 'fileupload_maxk', 1500 ) ) ) { return sprintf( __( 'This file is too big. Files must be less than %d KB in size.' ) . '
', get_site_option( 'fileupload_maxk', 1500 ) ); } return $upload; } /** * Add a nonce field to the signup page. * * @since MU */ function signup_nonce_fields() { $id = mt_rand(); echo ""; wp_nonce_field('signup_form_' . $id, '_signup_form', false); } /** * Process the signup nonce created in signup_nonce_fields(). * * @since MU * * @param array $result * @return array */ function signup_nonce_check( $result ) { if ( !strpos( $_SERVER[ 'PHP_SELF' ], 'wp-signup.php' ) ) return $result; if ( wp_create_nonce('signup_form_' . $_POST[ 'signup_form_id' ]) != $_POST['_signup_form'] ) wp_die( __( 'Please try again.' ) ); return $result; } /** * Correct 404 redirects when NOBLOGREDIRECT is defined. * * @since MU */ function maybe_redirect_404() { /** * Filters the redirect URL for 404s on the main site. * * The filter is only evaluated if the NOBLOGREDIRECT constant is defined. * * @since 3.0.0 * * @param string $no_blog_redirect The redirect URL defined in NOBLOGREDIRECT. */ if ( is_main_site() && is_404() && defined( 'NOBLOGREDIRECT' ) && ( $destination = apply_filters( 'blog_redirect_404', NOBLOGREDIRECT ) ) ) { if ( $destination == '%siteurl%' ) $destination = network_home_url(); wp_redirect( $destination ); exit(); } } /** * Add a new user to a blog by visiting /newbloguser/username/. * * This will only work when the user's details are saved as an option * keyed as 'new_user_x', where 'x' is the username of the user to be * added, as when a user is invited through the regular WP Add User interface. * * @since MU */ function maybe_add_existing_user_to_blog() { if ( false === strpos( $_SERVER[ 'REQUEST_URI' ], '/newbloguser/' ) ) return; $parts = explode( '/', $_SERVER[ 'REQUEST_URI' ] ); $key = array_pop( $parts ); if ( $key == '' ) $key = array_pop( $parts ); $details = get_option( 'new_user_' . $key ); if ( !empty( $details ) ) delete_option( 'new_user_' . $key ); if ( empty( $details ) || is_wp_error( add_existing_user_to_blog( $details ) ) ) wp_die( sprintf(__('An error occurred adding you to this site. Back to the homepage.'), home_url() ) ); wp_die( sprintf( __( 'You have been added to this site. Please visit the homepage or log in using your username and password.' ), home_url(), admin_url() ), __( 'WordPress › Success' ), array( 'response' => 200 ) ); } /** * Add a user to a blog based on details from maybe_add_existing_user_to_blog(). * * @since MU * * @param array $details * @return true|WP_Error|void */ function add_existing_user_to_blog( $details = false ) { if ( is_array( $details ) ) { $blog_id = get_current_blog_id(); $result = add_user_to_blog( $blog_id, $details[ 'user_id' ], $details[ 'role' ] ); /** * Fires immediately after an existing user is added to a site. * * @since MU * * @param int $user_id User ID. * @param mixed $result True on success or a WP_Error object if the user doesn't exist. */ do_action( 'added_existing_user', $details['user_id'], $result ); return $result; } } /** * Adds a newly created user to the appropriate blog * * To add a user in general, use add_user_to_blog(). This function * is specifically hooked into the {@see 'wpmu_activate_user'} action. * * @since MU * @see add_user_to_blog() * * @param int $user_id * @param mixed $password Ignored. * @param array $meta */ function add_new_user_to_blog( $user_id, $password, $meta ) { if ( !empty( $meta[ 'add_to_blog' ] ) ) { $blog_id = $meta[ 'add_to_blog' ]; $role = $meta[ 'new_role' ]; remove_user_from_blog($user_id, get_network()->site_id); // remove user from main blog. add_user_to_blog( $blog_id, $user_id, $role ); update_user_meta( $user_id, 'primary_blog', $blog_id ); } } /** * Correct From host on outgoing mail to match the site domain * * @since MU * * @param PHPMailer $phpmailer The PHPMailer instance, passed by reference. */ function fix_phpmailer_messageid( $phpmailer ) { $phpmailer->Hostname = get_network()->domain; } /** * Check to see whether a user is marked as a spammer, based on user login. * * @since MU * * @param string|WP_User $user Optional. Defaults to current user. WP_User object, * or user login name as a string. * @return bool */ function is_user_spammy( $user = null ) { if ( ! ( $user instanceof WP_User ) ) { if ( $user ) { $user = get_user_by( 'login', $user ); } else { $user = wp_get_current_user(); } } return $user && isset( $user->spam ) && 1 == $user->spam; } /** * Update this blog's 'public' setting in the global blogs table. * * Public blogs have a setting of 1, private blogs are 0. * * @since MU * * @param int $old_value * @param int $value The new public value */ function update_blog_public( $old_value, $value ) { update_blog_status( get_current_blog_id(), 'public', (int) $value ); } /** * Check whether a usermeta key has to do with the current blog. * * @since MU * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $key * @param int $user_id Optional. Defaults to current user. * @param int $blog_id Optional. Defaults to current blog. * @return bool */ function is_user_option_local( $key, $user_id = 0, $blog_id = 0 ) { global $wpdb; $current_user = wp_get_current_user(); if ( $blog_id == 0 ) { $blog_id = $wpdb->blogid; } $local_key = $wpdb->get_blog_prefix( $blog_id ) . $key; return isset( $current_user->$local_key ); } /** * Check whether users can self-register, based on Network settings. * * @since MU * * @return bool */ function users_can_register_signup_filter() { $registration = get_site_option('registration'); return ( $registration == 'all' || $registration == 'user' ); } /** * Ensure that the welcome message is not empty. Currently unused. * * @since MU * * @param string $text * @return string */ function welcome_user_msg_filter( $text ) { if ( !$text ) { remove_filter( 'site_option_welcome_user_email', 'welcome_user_msg_filter' ); /* translators: Do not translate USERNAME, PASSWORD, LOGINLINK, SITE_NAME: those are placeholders. */ $text = __( 'Howdy USERNAME, Your new account is set up. You can log in with the following information: Username: USERNAME Password: PASSWORD LOGINLINK Thanks! --The Team @ SITE_NAME' ); update_site_option( 'welcome_user_email', $text ); } return $text; } /** * Whether to force SSL on content. * * @since 2.8.5 * * @staticvar bool $forced_content * * @param bool $force * @return bool True if forced, false if not forced. */ function force_ssl_content( $force = '' ) { static $forced_content = false; if ( '' != $force ) { $old_forced = $forced_content; $forced_content = $force; return $old_forced; } return $forced_content; } /** * Formats a URL to use https. * * Useful as a filter. * * @since 2.8.5 * * @param string $url URL * @return string URL with https as the scheme */ function filter_SSL( $url ) { if ( ! is_string( $url ) ) return get_bloginfo( 'url' ); // Return home blog url with proper scheme if ( force_ssl_content() && is_ssl() ) $url = set_url_scheme( $url, 'https' ); return $url; } /** * Schedule update of the network-wide counts for the current network. * * @since 3.1.0 */ function wp_schedule_update_network_counts() { if ( !is_main_site() ) return; if ( ! wp_next_scheduled('update_network_counts') && ! wp_installing() ) wp_schedule_event(time(), 'twicedaily', 'update_network_counts'); } /** * Update the network-wide counts for the current network. * * @since 3.1.0 * @since 4.8.0 The $network_id parameter has been added. * * @param int|null $network_id ID of the network. Default is the current network. */ function wp_update_network_counts( $network_id = null ) { wp_update_network_user_counts( $network_id ); wp_update_network_site_counts( $network_id ); } /** * Update the count of sites for the current network. * * If enabled through the {@see 'enable_live_network_counts'} filter, update the sites count * on a network when a site is created or its status is updated. * * @since 3.7.0 * @since 4.8.0 The $network_id parameter has been added. * * @param int|null $network_id ID of the network. Default is the current network. */ function wp_maybe_update_network_site_counts( $network_id = null ) { $is_small_network = ! wp_is_large_network( 'sites', $network_id ); /** * Filters whether to update network site or user counts when a new site is created. * * @since 3.7.0 * * @see wp_is_large_network() * * @param bool $small_network Whether the network is considered small. * @param string $context Context. Either 'users' or 'sites'. */ if ( ! apply_filters( 'enable_live_network_counts', $is_small_network, 'sites' ) ) return; wp_update_network_site_counts( $network_id ); } /** * Update the network-wide users count. * * If enabled through the {@see 'enable_live_network_counts'} filter, update the users count * on a network when a user is created or its status is updated. * * @since 3.7.0 * @since 4.8.0 The $network_id parameter has been added. * * @param int|null $network_id ID of the network. Default is the current network. */ function wp_maybe_update_network_user_counts( $network_id = null ) { $is_small_network = ! wp_is_large_network( 'users', $network_id ); /** This filter is documented in wp-includes/ms-functions.php */ if ( ! apply_filters( 'enable_live_network_counts', $is_small_network, 'users' ) ) return; wp_update_network_user_counts( $network_id ); } /** * Update the network-wide site count. * * @since 3.7.0 * @since 4.8.0 The $network_id parameter has been added. * * @param int|null $network_id ID of the network. Default is the current network. */ function wp_update_network_site_counts( $network_id = null ) { $network_id = (int) $network_id; if ( ! $network_id ) { $network_id = get_current_network_id(); } $count = get_sites( array( 'network_id' => $network_id, 'spam' => 0, 'deleted' => 0, 'archived' => 0, 'count' => true, ) ); update_network_option( $network_id, 'blog_count', $count ); } /** * Update the network-wide user count. * * @since 3.7.0 * @since 4.8.0 The $network_id parameter has been added. * * @global wpdb $wpdb WordPress database abstraction object. * * @param int|null $network_id ID of the network. Default is the current network. */ function wp_update_network_user_counts( $network_id = null ) { global $wpdb; $count = $wpdb->get_var( "SELECT COUNT(ID) as c FROM $wpdb->users WHERE spam = '0' AND deleted = '0'" ); update_network_option( $network_id, 'user_count', $count ); } /** * Returns the space used by the current blog. * * @since 3.5.0 * * @return int Used space in megabytes */ function get_space_used() { /** * Filters the amount of storage space used by the current site. * * @since 3.5.0 * * @param int|bool $space_used The amount of used space, in megabytes. Default false. */ $space_used = apply_filters( 'pre_get_space_used', false ); if ( false === $space_used ) { $upload_dir = wp_upload_dir(); $space_used = get_dirsize( $upload_dir['basedir'] ) / MB_IN_BYTES; } return $space_used; } /** * Returns the upload quota for the current blog. * * @since MU * * @return int Quota in megabytes */ function get_space_allowed() { $space_allowed = get_option( 'blog_upload_space' ); if ( ! is_numeric( $space_allowed ) ) $space_allowed = get_site_option( 'blog_upload_space' ); if ( ! is_numeric( $space_allowed ) ) $space_allowed = 100; /** * Filters the upload quota for the current site. * * @since 3.7.0 * * @param int $space_allowed Upload quota in megabytes for the current blog. */ return apply_filters( 'get_space_allowed', $space_allowed ); } /** * Determines if there is any upload space left in the current blog's quota. * * @since 3.0.0 * * @return int of upload space available in bytes */ function get_upload_space_available() { $allowed = get_space_allowed(); if ( $allowed < 0 ) { $allowed = 0; } $space_allowed = $allowed * MB_IN_BYTES; if ( get_site_option( 'upload_space_check_disabled' ) ) return $space_allowed; $space_used = get_space_used() * MB_IN_BYTES; if ( ( $space_allowed - $space_used ) <= 0 ) return 0; return $space_allowed - $space_used; } /** * Determines if there is any upload space left in the current blog's quota. * * @since 3.0.0 * @return bool True if space is available, false otherwise. */ function is_upload_space_available() { if ( get_site_option( 'upload_space_check_disabled' ) ) return true; return (bool) get_upload_space_available(); } /** * Filters the maximum upload file size allowed, in bytes. * * @since 3.0.0 * * @param int $size Upload size limit in bytes. * @return int Upload size limit in bytes. */ function upload_size_limit_filter( $size ) { $fileupload_maxk = KB_IN_BYTES * get_site_option( 'fileupload_maxk', 1500 ); if ( get_site_option( 'upload_space_check_disabled' ) ) return min( $size, $fileupload_maxk ); return min( $size, $fileupload_maxk, get_upload_space_available() ); } /** * Whether or not we have a large network. * * The default criteria for a large network is either more than 10,000 users or more than 10,000 sites. * Plugins can alter this criteria using the {@see 'wp_is_large_network'} filter. * * @since 3.3.0 * @since 4.8.0 The $network_id parameter has been added. * * @param string $using 'sites or 'users'. Default is 'sites'. * @param int|null $network_id ID of the network. Default is the current network. * @return bool True if the network meets the criteria for large. False otherwise. */ function wp_is_large_network( $using = 'sites', $network_id = null ) { $network_id = (int) $network_id; if ( ! $network_id ) { $network_id = get_current_network_id(); } if ( 'users' == $using ) { $count = get_user_count( $network_id ); /** * Filters whether the network is considered large. * * @since 3.3.0 * @since 4.8.0 The $network_id parameter has been added. * * @param bool $is_large_network Whether the network has more than 10000 users or sites. * @param string $component The component to count. Accepts 'users', or 'sites'. * @param int $count The count of items for the component. * @param int $network_id The ID of the network being checked. */ return apply_filters( 'wp_is_large_network', $count > 10000, 'users', $count, $network_id ); } $count = get_blog_count( $network_id ); /** This filter is documented in wp-includes/ms-functions.php */ return apply_filters( 'wp_is_large_network', $count > 10000, 'sites', $count, $network_id ); } /** * Retrieves a list of reserved site on a sub-directory Multisite install. * * @since 4.4.0 * * @return array $names Array of reserved subdirectory names. */ function get_subdirectory_reserved_names() { $names = array( 'page', 'comments', 'blog', 'files', 'feed', 'wp-admin', 'wp-content', 'wp-includes', 'wp-json', 'embed' ); /** * Filters reserved site names on a sub-directory Multisite install. * * @since 3.0.0 * @since 4.4.0 'wp-admin', 'wp-content', 'wp-includes', 'wp-json', and 'embed' were added * to the reserved names list. * * @param array $subdirectory_reserved_names Array of reserved names. */ return apply_filters( 'subdirectory_reserved_names', $names ); }