3 * Multisite WordPress API
6 * @subpackage Multisite
11 * Gets the network's site and user counts.
14 * @uses get_blog_count()
15 * @uses get_user_count()
17 * @return array Site and user count for the network.
19 function get_sitestats() {
23 'blogs' => get_blog_count(),
24 'users' => get_user_count(),
31 * Get the admin for a domain/path combination.
35 * @param string $sitedomain Optional. Site domain.
36 * @param string $path Optional. Site path.
37 * @return array The network admins
39 function get_admin_users_for_domain( $sitedomain = '', $path = '' ) {
43 $site_id = $wpdb->siteid;
45 $site_id = $wpdb->get_var( $wpdb->prepare( "SELECT id FROM $wpdb->site WHERE domain = %s AND path = %s", $sitedomain, $path ) );
48 return $wpdb->get_results( $wpdb->prepare( "SELECT u.ID, u.user_login, u.user_pass FROM $wpdb->users AS u, $wpdb->sitemeta AS sm WHERE sm.meta_key = 'admin_user_id' AND u.ID = sm.meta_value AND sm.site_id = %d", $site_id ), ARRAY_A );
54 * Get one of a user's active blogs
56 * Returns the user's primary blog, if she has one and
57 * it is active. If it's inactive, function returns another
58 * active blog of the user. If none are found, the user
59 * is added as a Subscriber to the Dashboard Blog and that blog
63 * @uses get_blogs_of_user()
64 * @uses add_user_to_blog()
65 * @uses get_blog_details()
67 * @param int $user_id The unique ID of the user
68 * @return object The blog object
70 function get_active_blog_for_user( $user_id ) {
72 $blogs = get_blogs_of_user( $user_id );
73 if ( empty( $blogs ) )
76 if ( !is_multisite() )
77 return $blogs[$wpdb->blogid];
79 $primary_blog = get_user_meta( $user_id, 'primary_blog', true );
80 $first_blog = current($blogs);
81 if ( false !== $primary_blog ) {
82 if ( ! isset( $blogs[ $primary_blog ] ) ) {
83 update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id );
84 $primary = get_blog_details( $first_blog->userblog_id );
86 $primary = get_blog_details( $primary_blog );
89 //TODO Review this call to add_user_to_blog too - to get here the user must have a role on this blog?
90 add_user_to_blog( $first_blog->userblog_id, $user_id, 'subscriber' );
91 update_user_meta( $user_id, 'primary_blog', $first_blog->userblog_id );
92 $primary = $first_blog;
95 if ( ( ! is_object( $primary ) ) || ( $primary->archived == 1 || $primary->spam == 1 || $primary->deleted == 1 ) ) {
96 $blogs = get_blogs_of_user( $user_id, true ); // if a user's primary blog is shut down, check their other blogs.
98 if ( is_array( $blogs ) && count( $blogs ) > 0 ) {
99 foreach ( (array) $blogs as $blog_id => $blog ) {
100 if ( $blog->site_id != $wpdb->siteid )
102 $details = get_blog_details( $blog_id );
103 if ( is_object( $details ) && $details->archived == 0 && $details->spam == 0 && $details->deleted == 0 ) {
105 if ( get_user_meta( $user_id , 'primary_blog', true ) != $blog_id )
106 update_user_meta( $user_id, 'primary_blog', $blog_id );
107 if ( !get_user_meta($user_id , 'source_domain', true) )
108 update_user_meta( $user_id, 'source_domain', $blog->domain );
122 * The number of active users in your installation.
124 * The count is cached and updated twice daily. This is not a live count.
130 function get_user_count() {
131 return get_site_option( 'user_count' );
135 * The number of active sites on your installation.
137 * The count is cached and updated twice daily. This is not a live count.
141 * @param int $id Optional. A site_id.
144 function get_blog_count( $id = 0 ) {
145 return get_site_option( 'blog_count' );
149 * Get a blog post from any site on the network.
153 * @param int $blog_id ID of the blog.
154 * @param int $post_id ID of the post you're looking for.
155 * @return WP_Post|null WP_Post on success or null on failure
157 function get_blog_post( $blog_id, $post_id ) {
158 switch_to_blog( $blog_id );
159 $post = get_post( $post_id );
160 restore_current_blog();
166 * Add a user to a blog.
168 * Use the 'add_user_to_blog' action to fire an event when
169 * users are added to a blog.
173 * @param int $blog_id ID of the blog you're adding the user to.
174 * @param int $user_id ID of the user you're adding.
175 * @param string $role The role you want the user to have
178 function add_user_to_blog( $blog_id, $user_id, $role ) {
179 switch_to_blog($blog_id);
181 $user = get_userdata( $user_id );
184 restore_current_blog();
185 return new WP_Error( 'user_does_not_exist', __( 'The requested user does not exist.' ) );
188 if ( !get_user_meta($user_id, 'primary_blog', true) ) {
189 update_user_meta($user_id, 'primary_blog', $blog_id);
190 $details = get_blog_details($blog_id);
191 update_user_meta($user_id, 'source_domain', $details->domain);
194 $user->set_role($role);
196 do_action('add_user_to_blog', $user_id, $role, $blog_id);
197 wp_cache_delete( $user_id, 'users' );
198 restore_current_blog();
203 * Remove a user from a blog.
205 * Use the 'remove_user_from_blog' action to fire an event when
206 * users are removed from a blog.
208 * Accepts an optional $reassign parameter, if you want to
209 * reassign the user's blog posts to another user upon removal.
213 * @param int $user_id ID of the user you're removing.
214 * @param int $blog_id ID of the blog you're removing the user from.
215 * @param string $reassign Optional. A user to whom to reassign posts.
218 function remove_user_from_blog($user_id, $blog_id = '', $reassign = '') {
220 switch_to_blog($blog_id);
221 $user_id = (int) $user_id;
222 do_action('remove_user_from_blog', $user_id, $blog_id);
224 // If being removed from the primary blog, set a new primary if the user is assigned
225 // to multiple blogs.
226 $primary_blog = get_user_meta($user_id, 'primary_blog', true);
227 if ( $primary_blog == $blog_id ) {
230 $blogs = get_blogs_of_user($user_id);
231 foreach ( (array) $blogs as $blog ) {
232 if ( $blog->userblog_id == $blog_id )
234 $new_id = $blog->userblog_id;
235 $new_domain = $blog->domain;
239 update_user_meta($user_id, 'primary_blog', $new_id);
240 update_user_meta($user_id, 'source_domain', $new_domain);
243 // wp_revoke_user($user_id);
244 $user = get_userdata( $user_id );
246 restore_current_blog();
247 return new WP_Error('user_does_not_exist', __('That user does not exist.'));
250 $user->remove_all_caps();
252 $blogs = get_blogs_of_user($user_id);
253 if ( count($blogs) == 0 ) {
254 update_user_meta($user_id, 'primary_blog', '');
255 update_user_meta($user_id, 'source_domain', '');
258 if ( $reassign != '' ) {
259 $reassign = (int) $reassign;
260 $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET post_author = %d WHERE post_author = %d", $reassign, $user_id) );
261 $wpdb->query( $wpdb->prepare("UPDATE $wpdb->links SET link_owner = %d WHERE link_owner = %d", $reassign, $user_id) );
264 restore_current_blog();
270 * Create an empty blog.
273 * @uses install_blog()
275 * @param string $domain The new blog's domain.
276 * @param string $path The new blog's path.
277 * @param string $weblog_title The new blog's title.
278 * @param int $site_id Optional. Defaults to 1.
279 * @return int The ID of the newly created blog
281 function create_empty_blog( $domain, $path, $weblog_title, $site_id = 1 ) {
285 // Check if the domain has been used already. We should return an error message.
286 if ( domain_exists($domain, $path, $site_id) )
287 return __( '<strong>ERROR</strong>: Site URL already taken.' );
289 // Need to back up wpdb table names, and create a new wp_blogs entry for new blog.
290 // Need to get blog_id from wp_blogs, and create new table names.
291 // Must restore table names at the end of function.
293 if ( ! $blog_id = insert_blog($domain, $path, $site_id) )
294 return __( '<strong>ERROR</strong>: problem creating site entry.' );
296 switch_to_blog($blog_id);
297 install_blog($blog_id);
298 restore_current_blog();
304 * Get the permalink for a post on another blog.
308 * @param int $blog_id ID of the source blog.
309 * @param int $post_id ID of the desired post.
310 * @return string The post's permalink
312 function get_blog_permalink( $blog_id, $post_id ) {
313 switch_to_blog( $blog_id );
314 $link = get_permalink( $post_id );
315 restore_current_blog();
321 * Get a blog's numeric ID from its URL.
323 * On a subdirectory installation like example.com/blog1/,
324 * $domain will be the root 'example.com' and $path the
325 * subdirectory '/blog1/'. With subdomains like blog1.example.com,
326 * $domain is 'blog1.example.com' and $path is '/'.
330 * @param string $domain
331 * @param string $path Optional. Not required for subdomain installations.
332 * @return int 0 if no blog found, otherwise the ID of the matching blog
334 function get_blog_id_from_url( $domain, $path = '/' ) {
337 $domain = strtolower( $domain );
338 $path = strtolower( $path );
339 $id = wp_cache_get( md5( $domain . $path ), 'blog-id-cache' );
341 if ( $id == -1 ) // blog does not exist
346 $id = $wpdb->get_var( $wpdb->prepare( "SELECT blog_id FROM $wpdb->blogs WHERE domain = %s and path = %s /* get_blog_id_from_url */", $domain, $path ) );
349 wp_cache_set( md5( $domain . $path ), -1, 'blog-id-cache' );
353 wp_cache_set( md5( $domain . $path ), $id, 'blog-id-cache' );
361 * Checks an email address against a list of banned domains.
363 * This function checks against the Banned Email Domains list
364 * at wp-admin/network/settings.php. The check is only run on
365 * self-registrations; user creation at wp-admin/network/users.php
366 * bypasses this check.
370 * @param string $user_email The email provided by the user at registration.
371 * @return bool Returns true when the email address is banned.
373 function is_email_address_unsafe( $user_email ) {
374 $banned_names = get_site_option( 'banned_email_domains' );
375 if ( $banned_names && ! is_array( $banned_names ) )
376 $banned_names = explode( "\n", $banned_names );
378 $is_email_address_unsafe = false;
380 if ( $banned_names && is_array( $banned_names ) ) {
381 $banned_names = array_map( 'strtolower', $banned_names );
382 $normalized_email = strtolower( $user_email );
384 list( $email_local_part, $email_domain ) = explode( '@', $normalized_email );
386 foreach ( $banned_names as $banned_domain ) {
387 if ( ! $banned_domain )
390 if ( $email_domain == $banned_domain ) {
391 $is_email_address_unsafe = true;
395 $dotted_domain = ".$banned_domain";
396 if ( $dotted_domain === substr( $normalized_email, -strlen( $dotted_domain ) ) ) {
397 $is_email_address_unsafe = true;
403 return apply_filters( 'is_email_address_unsafe', $is_email_address_unsafe, $user_email );
407 * Processes new user registrations.
409 * Checks the data provided by the user during signup. Verifies
410 * the validity and uniqueness of user names and user email addresses,
411 * and checks email addresses against admin-provided domain
412 * whitelists and blacklists.
414 * The hook 'wpmu_validate_user_signup' provides an easy way
415 * to modify the signup process. The value $result, which is passed
416 * to the hook, contains both the user-provided info and the error
417 * messages created by the function. 'wpmu_validate_user_signup' allows
418 * you to process the data in any way you'd like, and unset the
419 * relevant errors if necessary.
422 * @uses is_email_address_unsafe()
423 * @uses username_exists()
424 * @uses email_exists()
426 * @param string $user_name The login name provided by the user.
427 * @param string $user_email The email provided by the user.
428 * @return array Contains username, email, and error messages.
430 function wpmu_validate_user_signup($user_name, $user_email) {
433 $errors = new WP_Error();
435 $orig_username = $user_name;
436 $user_name = preg_replace( '/\s+/', '', sanitize_user( $user_name, true ) );
438 if ( $user_name != $orig_username || preg_match( '/[^a-z0-9]/', $user_name ) ) {
439 $errors->add( 'user_name', __( 'Only lowercase letters (a-z) and numbers are allowed.' ) );
440 $user_name = $orig_username;
443 $user_email = sanitize_email( $user_email );
445 if ( empty( $user_name ) )
446 $errors->add('user_name', __( 'Please enter a username.' ) );
448 $illegal_names = get_site_option( 'illegal_names' );
449 if ( is_array( $illegal_names ) == false ) {
450 $illegal_names = array( 'www', 'web', 'root', 'admin', 'main', 'invite', 'administrator' );
451 add_site_option( 'illegal_names', $illegal_names );
453 if ( in_array( $user_name, $illegal_names ) == true )
454 $errors->add('user_name', __( 'That username is not allowed.' ) );
456 if ( is_email_address_unsafe( $user_email ) )
457 $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.'));
459 if ( strlen( $user_name ) < 4 )
460 $errors->add('user_name', __( 'Username must be at least 4 characters.' ) );
462 if ( strpos( ' ' . $user_name, '_' ) != false )
463 $errors->add( 'user_name', __( 'Sorry, usernames may not contain the character “_”!' ) );
466 if ( preg_match( '/^[0-9]*$/', $user_name ) )
467 $errors->add('user_name', __('Sorry, usernames must have letters too!'));
469 if ( !is_email( $user_email ) )
470 $errors->add('user_email', __( 'Please enter a valid email address.' ) );
472 $limited_email_domains = get_site_option( 'limited_email_domains' );
473 if ( is_array( $limited_email_domains ) && empty( $limited_email_domains ) == false ) {
474 $emaildomain = substr( $user_email, 1 + strpos( $user_email, '@' ) );
475 if ( in_array( $emaildomain, $limited_email_domains ) == false )
476 $errors->add('user_email', __('Sorry, that email address is not allowed!'));
479 // Check if the username has been used already.
480 if ( username_exists($user_name) )
481 $errors->add( 'user_name', __( 'Sorry, that username already exists!' ) );
483 // Check if the email address has been used already.
484 if ( email_exists($user_email) )
485 $errors->add( 'user_email', __( 'Sorry, that email address is already used!' ) );
487 // Has someone already signed up for this username?
488 $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE user_login = %s", $user_name) );
489 if ( $signup != null ) {
490 $registered_at = mysql2date('U', $signup->registered);
491 $now = current_time( 'timestamp', true );
492 $diff = $now - $registered_at;
493 // If registered more than two days ago, cancel registration and let this signup go through.
494 if ( $diff > 2 * DAY_IN_SECONDS )
495 $wpdb->delete( $wpdb->signups, array( 'user_login' => $user_name ) );
497 $errors->add('user_name', __('That username is currently reserved but may be available in a couple of days.'));
500 $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE user_email = %s", $user_email) );
501 if ( $signup != null ) {
502 $diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered);
503 // If registered more than two days ago, cancel registration and let this signup go through.
504 if ( $diff > 2 * DAY_IN_SECONDS )
505 $wpdb->delete( $wpdb->signups, array( 'user_email' => $user_email ) );
507 $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.'));
510 $result = array('user_name' => $user_name, 'orig_username' => $orig_username, 'user_email' => $user_email, 'errors' => $errors);
512 return apply_filters('wpmu_validate_user_signup', $result);
516 * Processes new site registrations.
518 * Checks the data provided by the user during blog signup. Verifies
519 * the validity and uniqueness of blog paths and domains.
521 * This function prevents the current user from registering a new site
522 * with a blogname equivalent to another user's login name. Passing the
523 * $user parameter to the function, where $user is the other user, is
524 * effectively an override of this limitation.
526 * Filter 'wpmu_validate_blog_signup' if you want to modify
527 * the way that WordPress validates new site signups.
530 * @uses domain_exists()
531 * @uses username_exists()
533 * @param string $blogname The blog name provided by the user. Must be unique.
534 * @param string $blog_title The blog title provided by the user.
535 * @return array Contains the new site data and error messages.
537 function wpmu_validate_blog_signup($blogname, $blog_title, $user = '') {
538 global $wpdb, $domain, $current_site;
540 $base = $current_site->path;
542 $blog_title = strip_tags( $blog_title );
543 $blog_title = substr( $blog_title, 0, 50 );
545 $errors = new WP_Error();
546 $illegal_names = get_site_option( 'illegal_names' );
547 if ( $illegal_names == false ) {
548 $illegal_names = array( 'www', 'web', 'root', 'admin', 'main', 'invite', 'administrator' );
549 add_site_option( 'illegal_names', $illegal_names );
552 // On sub dir installs, Some names are so illegal, only a filter can spring them from jail
553 if (! is_subdomain_install() )
554 $illegal_names = array_merge($illegal_names, apply_filters( 'subdirectory_reserved_names', array( 'page', 'comments', 'blog', 'files', 'feed' ) ) );
556 if ( empty( $blogname ) )
557 $errors->add('blogname', __( 'Please enter a site name.' ) );
559 if ( preg_match( '/[^a-z0-9]+/', $blogname ) )
560 $errors->add('blogname', __( 'Only lowercase letters (a-z) and numbers are allowed.' ) );
562 if ( in_array( $blogname, $illegal_names ) == true )
563 $errors->add('blogname', __( 'That name is not allowed.' ) );
565 if ( strlen( $blogname ) < 4 && !is_super_admin() )
566 $errors->add('blogname', __( 'Site name must be at least 4 characters.' ) );
568 if ( strpos( $blogname, '_' ) !== false )
569 $errors->add( 'blogname', __( 'Sorry, site names may not contain the character “_”!' ) );
571 // do not allow users to create a blog that conflicts with a page on the main blog.
572 if ( !is_subdomain_install() && $wpdb->get_var( $wpdb->prepare( "SELECT post_name FROM " . $wpdb->get_blog_prefix( $current_site->blog_id ) . "posts WHERE post_type = 'page' AND post_name = %s", $blogname ) ) )
573 $errors->add( 'blogname', __( 'Sorry, you may not use that site name.' ) );
576 if ( preg_match( '/^[0-9]*$/', $blogname ) )
577 $errors->add('blogname', __('Sorry, site names must have letters too!'));
579 $blogname = apply_filters( 'newblogname', $blogname );
581 $blog_title = wp_unslash( $blog_title );
583 if ( empty( $blog_title ) )
584 $errors->add('blog_title', __( 'Please enter a site title.' ) );
586 // Check if the domain/path has been used already.
587 if ( is_subdomain_install() ) {
588 $mydomain = $blogname . '.' . preg_replace( '|^www\.|', '', $domain );
591 $mydomain = "$domain";
592 $path = $base.$blogname.'/';
594 if ( domain_exists($mydomain, $path, $current_site->id) )
595 $errors->add( 'blogname', __( 'Sorry, that site already exists!' ) );
597 if ( username_exists( $blogname ) ) {
598 if ( is_object( $user ) == false || ( is_object($user) && ( $user->user_login != $blogname ) ) )
599 $errors->add( 'blogname', __( 'Sorry, that site is reserved!' ) );
602 // Has someone already signed up for this domain?
603 $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE domain = %s AND path = %s", $mydomain, $path) ); // TODO: Check email too?
604 if ( ! empty($signup) ) {
605 $diff = current_time( 'timestamp', true ) - mysql2date('U', $signup->registered);
606 // If registered more than two days ago, cancel registration and let this signup go through.
607 if ( $diff > 2 * DAY_IN_SECONDS )
608 $wpdb->delete( $wpdb->signups, array( 'domain' => $mydomain , 'path' => $path ) );
610 $errors->add('blogname', __('That site is currently reserved but may be available in a couple days.'));
613 $result = array('domain' => $mydomain, 'path' => $path, 'blogname' => $blogname, 'blog_title' => $blog_title, 'user' => $user, 'errors' => $errors);
614 return apply_filters('wpmu_validate_blog_signup', $result);
618 * Record site signup information for future activation.
621 * @uses wpmu_signup_blog_notification()
623 * @param string $domain The requested domain.
624 * @param string $path The requested path.
625 * @param string $title The requested site title.
626 * @param string $user The user's requested login name.
627 * @param string $user_email The user's email address.
628 * @param array $meta By default, contains the requested privacy setting and lang_id.
630 function wpmu_signup_blog($domain, $path, $title, $user, $user_email, $meta = '') {
633 $key = substr( md5( time() . rand() . $domain ), 0, 16 );
634 $meta = serialize($meta);
636 $wpdb->insert( $wpdb->signups, array(
640 'user_login' => $user,
641 'user_email' => $user_email,
642 'registered' => current_time('mysql', true),
643 'activation_key' => $key,
647 wpmu_signup_blog_notification($domain, $path, $title, $user, $user_email, $key, $meta);
651 * Record user signup information for future activation.
653 * This function is used when user registration is open but
654 * new site registration is not.
657 * @uses wpmu_signup_user_notification()
659 * @param string $user The user's requested login name.
660 * @param string $user_email The user's email address.
661 * @param array $meta By default, this is an empty array.
663 function wpmu_signup_user($user, $user_email, $meta = '') {
667 $user = preg_replace( '/\s+/', '', sanitize_user( $user, true ) );
668 $user_email = sanitize_email( $user_email );
669 $key = substr( md5( time() . rand() . $user_email ), 0, 16 );
670 $meta = serialize($meta);
672 $wpdb->insert( $wpdb->signups, array(
676 'user_login' => $user,
677 'user_email' => $user_email,
678 'registered' => current_time('mysql', true),
679 'activation_key' => $key,
683 wpmu_signup_user_notification($user, $user_email, $key, $meta);
687 * Notify user of signup success.
689 * This is the notification function used when site registration
692 * Filter 'wpmu_signup_blog_notification' to bypass this function or
693 * replace it with your own notification behavior.
695 * Filter 'wpmu_signup_blog_notification_email' and
696 * 'wpmu_signup_blog_notification_subject' to change the content
697 * and subject line of the email sent to newly registered users.
701 * @param string $domain The new blog domain.
702 * @param string $path The new blog path.
703 * @param string $title The site title.
704 * @param string $user The user's login name.
705 * @param string $user_email The user's email address.
706 * @param array $meta By default, contains the requested privacy setting and lang_id.
707 * @param string $key The activation key created in wpmu_signup_blog()
710 function wpmu_signup_blog_notification($domain, $path, $title, $user, $user_email, $key, $meta = '') {
711 global $current_site;
713 if ( !apply_filters('wpmu_signup_blog_notification', $domain, $path, $title, $user, $user_email, $key, $meta) )
716 // Send email with activation link.
717 if ( !is_subdomain_install() || $current_site->id != 1 )
718 $activate_url = network_site_url("wp-activate.php?key=$key");
720 $activate_url = "http://{$domain}{$path}wp-activate.php?key=$key"; // @todo use *_url() API
722 $activate_url = esc_url($activate_url);
723 $admin_email = get_site_option( 'admin_email' );
724 if ( $admin_email == '' )
725 $admin_email = 'support@' . $_SERVER['SERVER_NAME'];
726 $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) );
727 $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
729 apply_filters( 'wpmu_signup_blog_notification_email',
730 __( "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" ),
731 $domain, $path, $title, $user, $user_email, $key, $meta
734 esc_url( "http://{$domain}{$path}" ),
737 // TODO: Don't hard code activation link.
739 apply_filters( 'wpmu_signup_blog_notification_subject',
740 __( '[%1$s] Activate %2$s' ),
741 $domain, $path, $title, $user, $user_email, $key, $meta
744 esc_url( 'http://' . $domain . $path )
746 wp_mail($user_email, $subject, $message, $message_headers);
751 * Notify user of signup success.
753 * This is the notification function used when no new site has
756 * Filter 'wpmu_signup_user_notification' to bypass this function or
757 * replace it with your own notification behavior.
759 * Filter 'wpmu_signup_user_notification_email' and
760 * 'wpmu_signup_user_notification_subject' to change the content
761 * and subject line of the email sent to newly registered users.
765 * @param string $user The user's login name.
766 * @param string $user_email The user's email address.
767 * @param array $meta By default, an empty array.
768 * @param string $key The activation key created in wpmu_signup_user()
771 function wpmu_signup_user_notification($user, $user_email, $key, $meta = '') {
772 if ( !apply_filters('wpmu_signup_user_notification', $user, $user_email, $key, $meta) )
775 // Send email with activation link.
776 $admin_email = get_site_option( 'admin_email' );
777 if ( $admin_email == '' )
778 $admin_email = 'support@' . $_SERVER['SERVER_NAME'];
779 $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) );
780 $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
782 apply_filters( 'wpmu_signup_user_notification_email',
783 __( "To activate your user, please click the following link:\n\n%s\n\nAfter you activate, you will receive *another email* with your login." ),
784 $user, $user_email, $key, $meta
786 site_url( "wp-activate.php?key=$key" )
788 // TODO: Don't hard code activation link.
790 apply_filters( 'wpmu_signup_user_notification_subject',
791 __( '[%1$s] Activate %2$s' ),
792 $user, $user_email, $key, $meta
797 wp_mail($user_email, $subject, $message, $message_headers);
804 * Hook to 'wpmu_activate_user' or 'wpmu_activate_blog' for events
805 * that should happen only when users or sites are self-created (since
806 * those actions are not called when users and sites are created
810 * @uses wp_generate_password()
811 * @uses wpmu_welcome_user_notification()
812 * @uses add_user_to_blog()
813 * @uses wpmu_create_user()
814 * @uses wpmu_create_blog()
815 * @uses wpmu_welcome_notification()
817 * @param string $key The activation key provided to the user.
818 * @return array An array containing information about the activated user and/or blog
820 function wpmu_activate_signup($key) {
821 global $wpdb, $current_site;
823 $signup = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->signups WHERE activation_key = %s", $key) );
825 if ( empty( $signup ) )
826 return new WP_Error( 'invalid_key', __( 'Invalid activation key.' ) );
828 if ( $signup->active ) {
829 if ( empty( $signup->domain ) )
830 return new WP_Error( 'already_active', __( 'The user is already active.' ), $signup );
832 return new WP_Error( 'already_active', __( 'The site is already active.' ), $signup );
835 $meta = maybe_unserialize($signup->meta);
836 $password = wp_generate_password( 12, false );
838 $user_id = username_exists($signup->user_login);
841 $user_id = wpmu_create_user($signup->user_login, $password, $signup->user_email);
843 $user_already_exists = true;
846 return new WP_Error('create_user', __('Could not create user'), $signup);
848 $now = current_time('mysql', true);
850 if ( empty($signup->domain) ) {
851 $wpdb->update( $wpdb->signups, array('active' => 1, 'activated' => $now), array('activation_key' => $key) );
853 if ( isset( $user_already_exists ) )
854 return new WP_Error( 'user_already_exists', __( 'That username is already activated.' ), $signup);
856 wpmu_welcome_user_notification( $user_id, $password, $meta );
857 do_action( 'wpmu_activate_user', $user_id, $password, $meta );
858 return array( 'user_id' => $user_id, 'password' => $password, 'meta' => $meta );
861 $blog_id = wpmu_create_blog( $signup->domain, $signup->path, $signup->title, $user_id, $meta, $wpdb->siteid );
863 // TODO: What to do if we create a user but cannot create a blog?
864 if ( is_wp_error($blog_id) ) {
865 // If blog is taken, that means a previous attempt to activate this blog failed in between creating the blog and
866 // setting the activation flag. Let's just set the active flag and instruct the user to reset their password.
867 if ( 'blog_taken' == $blog_id->get_error_code() ) {
868 $blog_id->add_data( $signup );
869 $wpdb->update( $wpdb->signups, array( 'active' => 1, 'activated' => $now ), array( 'activation_key' => $key ) );
874 $wpdb->update( $wpdb->signups, array('active' => 1, 'activated' => $now), array('activation_key' => $key) );
875 wpmu_welcome_notification($blog_id, $user_id, $password, $signup->title, $meta);
876 do_action('wpmu_activate_blog', $blog_id, $user_id, $password, $signup->title, $meta);
878 return array('blog_id' => $blog_id, 'user_id' => $user_id, 'password' => $password, 'title' => $signup->title, 'meta' => $meta);
884 * This function runs when a user self-registers as well as when
885 * a Super Admin creates a new user. Hook to 'wpmu_new_user' for events
886 * that should affect all new users, but only on Multisite (otherwise
887 * use 'user_register').
890 * @uses wp_create_user()
892 * @param string $user_name The new user's login name.
893 * @param string $password The new user's password.
894 * @param string $email The new user's email address.
895 * @return mixed Returns false on failure, or int $user_id on success
897 function wpmu_create_user( $user_name, $password, $email ) {
898 $user_name = preg_replace( '/\s+/', '', sanitize_user( $user_name, true ) );
900 $user_id = wp_create_user( $user_name, $password, $email );
901 if ( is_wp_error( $user_id ) )
904 // Newly created users have no roles or caps until they are added to a blog.
905 delete_user_option( $user_id, 'capabilities' );
906 delete_user_option( $user_id, 'user_level' );
908 do_action( 'wpmu_new_user', $user_id );
916 * This function runs when a user self-registers a new site as well
917 * as when a Super Admin creates a new site. Hook to 'wpmu_new_blog'
918 * for events that should affect all new sites.
920 * On subdirectory installs, $domain is the same as the main site's
921 * domain, and the path is the subdirectory name (eg 'example.com'
922 * and '/blog1/'). On subdomain installs, $domain is the new subdomain +
923 * root domain (eg 'blog1.example.com'), and $path is '/'.
926 * @uses domain_exists()
927 * @uses insert_blog()
928 * @uses wp_install_defaults()
929 * @uses add_user_to_blog()
931 * @param string $domain The new site's domain.
932 * @param string $path The new site's path.
933 * @param string $title The new site's title.
934 * @param int $user_id The user ID of the new site's admin.
935 * @param array $meta Optional. Used to set initial site options.
936 * @param int $site_id Optional. Only relevant on multi-network installs.
937 * @return mixed Returns WP_Error object on failure, int $blog_id on success
939 function wpmu_create_blog($domain, $path, $title, $user_id, $meta = '', $site_id = 1) {
940 $domain = preg_replace( '/\s+/', '', sanitize_user( $domain, true ) );
942 if ( is_subdomain_install() )
943 $domain = str_replace( '@', '', $domain );
945 $title = strip_tags( $title );
946 $user_id = (int) $user_id;
951 // Check if the domain has been used already. We should return an error message.
952 if ( domain_exists($domain, $path, $site_id) )
953 return new WP_Error( 'blog_taken', __( 'Sorry, that site already exists!' ) );
955 if ( !defined('WP_INSTALLING') )
956 define( 'WP_INSTALLING', true );
958 if ( ! $blog_id = insert_blog($domain, $path, $site_id) )
959 return new WP_Error('insert_blog', __('Could not create site.'));
961 switch_to_blog($blog_id);
962 install_blog($blog_id, $title);
963 wp_install_defaults($user_id);
965 add_user_to_blog($blog_id, $user_id, 'administrator');
967 if ( is_array($meta) ) foreach ($meta as $key => $value) {
968 if ( $key == 'public' || $key == 'archived' || $key == 'mature' || $key == 'spam' || $key == 'deleted' || $key == 'lang_id' )
969 update_blog_status( $blog_id, $key, $value );
971 update_option( $key, $value );
974 add_option( 'WPLANG', get_site_option( 'WPLANG' ) );
975 update_option( 'blog_public', (int)$meta['public'] );
977 if ( ! is_super_admin( $user_id ) && ! get_user_meta( $user_id, 'primary_blog', true ) )
978 update_user_meta( $user_id, 'primary_blog', $blog_id );
980 restore_current_blog();
981 do_action( 'wpmu_new_blog', $blog_id, $user_id, $domain, $path, $site_id, $meta );
987 * Notifies the network admin that a new site has been activated.
989 * Filter 'newblog_notify_siteadmin' to change the content of
990 * the notification email.
994 * @param int $blog_id The new site's ID.
997 function newblog_notify_siteadmin( $blog_id, $deprecated = '' ) {
998 if ( get_site_option( 'registrationnotification' ) != 'yes' )
1001 $email = get_site_option( 'admin_email' );
1002 if ( is_email($email) == false )
1005 $options_site_url = esc_url(network_admin_url('settings.php'));
1007 switch_to_blog( $blog_id );
1008 $blogname = get_option( 'blogname' );
1009 $siteurl = site_url();
1010 restore_current_blog();
1012 $msg = sprintf( __( 'New Site: %1$s
1016 Disable these notifications: %4$s' ), $blogname, $siteurl, wp_unslash( $_SERVER['REMOTE_ADDR'] ), $options_site_url);
1017 $msg = apply_filters( 'newblog_notify_siteadmin', $msg );
1019 wp_mail( $email, sprintf( __( 'New Site Registration: %s' ), $siteurl ), $msg );
1024 * Notifies the network admin that a new user has been activated.
1026 * Filter 'newuser_notify_siteadmin' to change the content of
1027 * the notification email.
1030 * @uses apply_filters() Filter newuser_notify_siteadmin to change the content of the email message
1032 * @param int $user_id The new user's ID.
1035 function newuser_notify_siteadmin( $user_id ) {
1036 if ( get_site_option( 'registrationnotification' ) != 'yes' )
1039 $email = get_site_option( 'admin_email' );
1041 if ( is_email($email) == false )
1044 $user = get_userdata( $user_id );
1046 $options_site_url = esc_url(network_admin_url('settings.php'));
1047 $msg = sprintf(__('New User: %1$s
1050 Disable these notifications: %3$s'), $user->user_login, wp_unslash( $_SERVER['REMOTE_ADDR'] ), $options_site_url);
1052 $msg = apply_filters( 'newuser_notify_siteadmin', $msg, $user );
1053 wp_mail( $email, sprintf(__('New User Registration: %s'), $user->user_login), $msg );
1058 * Check whether a blogname is already taken.
1060 * Used during the new site registration process to ensure
1061 * that each blogname is unique.
1065 * @param string $domain The domain to be checked.
1066 * @param string $path The path to be checked.
1067 * @param int $site_id Optional. Relevant only on multi-network installs.
1070 function domain_exists($domain, $path, $site_id = 1) {
1072 $result = $wpdb->get_var( $wpdb->prepare("SELECT blog_id FROM $wpdb->blogs WHERE domain = %s AND path = %s AND site_id = %d", $domain, $path, $site_id) );
1073 return apply_filters( 'domain_exists', $result, $domain, $path, $site_id );
1077 * Store basic site info in the blogs table.
1079 * This function creates a row in the wp_blogs table and returns
1080 * the new blog's ID. It is the first step in creating a new blog.
1084 * @param string $domain The domain of the new site.
1085 * @param string $path The path of the new site.
1086 * @param int $site_id Unless you're running a multi-network install, be sure to set this value to 1.
1087 * @return int The ID of the new row
1089 function insert_blog($domain, $path, $site_id) {
1092 $path = trailingslashit($path);
1093 $site_id = (int) $site_id;
1095 $result = $wpdb->insert( $wpdb->blogs, array('site_id' => $site_id, 'domain' => $domain, 'path' => $path, 'registered' => current_time('mysql')) );
1099 $blog_id = $wpdb->insert_id;
1100 refresh_blog_details( $blog_id );
1105 * Install an empty blog.
1107 * Creates the new blog tables and options. If calling this function
1108 * directly, be sure to use switch_to_blog() first, so that $wpdb
1109 * points to the new blog.
1112 * @uses make_db_current_silent()
1113 * @uses populate_roles()
1115 * @param int $blog_id The value returned by insert_blog().
1116 * @param string $blog_title The title of the new site.
1118 function install_blog($blog_id, $blog_title = '') {
1119 global $wpdb, $wp_roles, $current_site;
1121 // Cast for security
1122 $blog_id = (int) $blog_id;
1124 require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
1126 $wpdb->suppress_errors();
1127 if ( $wpdb->get_results( "DESCRIBE {$wpdb->posts}" ) )
1128 die( '<h1>' . __( 'Already Installed' ) . '</h1><p>' . __( 'You appear to have already installed WordPress. To reinstall please clear your old database tables first.' ) . '</p></body></html>' );
1129 $wpdb->suppress_errors( false );
1131 $url = get_blogaddress_by_id( $blog_id );
1133 // Set everything up
1134 make_db_current_silent( 'blog' );
1139 $url = untrailingslashit( $url );
1141 update_option( 'siteurl', $url );
1142 update_option( 'home', $url );
1144 if ( get_site_option( 'ms_files_rewriting' ) )
1145 update_option( 'upload_path', UPLOADBLOGSDIR . "/$blog_id/files" );
1147 update_option( 'upload_path', get_blog_option( $current_site->blog_id, 'upload_path' ) );
1149 update_option( 'blogname', wp_unslash( $blog_title ) );
1150 update_option( 'admin_email', '' );
1153 $table_prefix = $wpdb->get_blog_prefix();
1154 delete_metadata( 'user', 0, $table_prefix . 'user_level', null, true ); // delete all
1155 delete_metadata( 'user', 0, $table_prefix . 'capabilities', null, true ); // delete all
1159 * Set blog defaults.
1161 * This function creates a row in the wp_blogs table.
1165 * @deprecated Use wp_install_defaults()
1166 * @uses wp_install_defaults()
1168 * @param int $blog_id Ignored in this function.
1169 * @param int $user_id
1171 function install_blog_defaults($blog_id, $user_id) {
1174 require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
1176 $wpdb->suppress_errors();
1178 wp_install_defaults($user_id);
1180 $wpdb->suppress_errors( false );
1184 * Notify a user that her blog activation has been successful.
1186 * Filter 'wpmu_welcome_notification' to disable or bypass.
1188 * Filter 'update_welcome_email' and 'update_welcome_subject' to
1189 * modify the content and subject line of the notification email.
1193 * @param int $blog_id
1194 * @param int $user_id
1195 * @param string $password
1196 * @param string $title The new blog's title
1197 * @param array $meta Optional. Not used in the default function, but is passed along to hooks for customization.
1200 function wpmu_welcome_notification($blog_id, $user_id, $password, $title, $meta = '') {
1201 global $current_site;
1203 if ( !apply_filters('wpmu_welcome_notification', $blog_id, $user_id, $password, $title, $meta) )
1206 $welcome_email = get_site_option( 'welcome_email' );
1207 if ( $welcome_email == false )
1208 $welcome_email = __( 'Dear User,
1210 Your new SITE_NAME site has been successfully set up at:
1213 You can log in to the administrator account with the following information:
1216 Log in here: BLOG_URLwp-login.php
1218 We hope you enjoy your new site. Thanks!
1220 --The Team @ SITE_NAME' );
1222 $url = get_blogaddress_by_id($blog_id);
1223 $user = get_userdata( $user_id );
1225 $welcome_email = str_replace( 'SITE_NAME', $current_site->site_name, $welcome_email );
1226 $welcome_email = str_replace( 'BLOG_TITLE', $title, $welcome_email );
1227 $welcome_email = str_replace( 'BLOG_URL', $url, $welcome_email );
1228 $welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email );
1229 $welcome_email = str_replace( 'PASSWORD', $password, $welcome_email );
1231 $welcome_email = apply_filters( 'update_welcome_email', $welcome_email, $blog_id, $user_id, $password, $title, $meta);
1232 $admin_email = get_site_option( 'admin_email' );
1234 if ( $admin_email == '' )
1235 $admin_email = 'support@' . $_SERVER['SERVER_NAME'];
1237 $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) );
1238 $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
1239 $message = $welcome_email;
1241 if ( empty( $current_site->site_name ) )
1242 $current_site->site_name = 'WordPress';
1244 $subject = apply_filters( 'update_welcome_subject', sprintf(__('New %1$s Site: %2$s'), $current_site->site_name, wp_unslash( $title ) ) );
1245 wp_mail($user->user_email, $subject, $message, $message_headers);
1250 * Notify a user that her account activation has been successful.
1252 * Filter 'wpmu_welcome_user_notification' to disable or bypass.
1254 * Filter 'update_welcome_user_email' and 'update_welcome_user_subject' to
1255 * modify the content and subject line of the notification email.
1259 * @param int $user_id
1260 * @param string $password
1261 * @param array $meta Optional. Not used in the default function, but is passed along to hooks for customization.
1264 function wpmu_welcome_user_notification($user_id, $password, $meta = '') {
1265 global $current_site;
1267 if ( !apply_filters('wpmu_welcome_user_notification', $user_id, $password, $meta) )
1270 $welcome_email = get_site_option( 'welcome_user_email' );
1272 $user = get_userdata( $user_id );
1274 $welcome_email = apply_filters( 'update_welcome_user_email', $welcome_email, $user_id, $password, $meta);
1275 $welcome_email = str_replace( 'SITE_NAME', $current_site->site_name, $welcome_email );
1276 $welcome_email = str_replace( 'USERNAME', $user->user_login, $welcome_email );
1277 $welcome_email = str_replace( 'PASSWORD', $password, $welcome_email );
1278 $welcome_email = str_replace( 'LOGINLINK', wp_login_url(), $welcome_email );
1280 $admin_email = get_site_option( 'admin_email' );
1282 if ( $admin_email == '' )
1283 $admin_email = 'support@' . $_SERVER['SERVER_NAME'];
1285 $from_name = get_site_option( 'site_name' ) == '' ? 'WordPress' : esc_html( get_site_option( 'site_name' ) );
1286 $message_headers = "From: \"{$from_name}\" <{$admin_email}>\n" . "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
1287 $message = $welcome_email;
1289 if ( empty( $current_site->site_name ) )
1290 $current_site->site_name = 'WordPress';
1292 $subject = apply_filters( 'update_welcome_user_subject', sprintf(__('New %1$s User: %2$s'), $current_site->site_name, $user->user_login) );
1293 wp_mail($user->user_email, $subject, $message, $message_headers);
1298 * Get the current site info.
1300 * Returns an object containing the ID, domain, path, and site_name
1301 * of the site being viewed.
1307 function get_current_site() {
1308 global $current_site;
1309 return $current_site;
1313 * Get a user's most recent post.
1315 * Walks through each of a user's blogs to find the post with
1316 * the most recent post_date_gmt.
1319 * @uses get_blogs_of_user()
1321 * @param int $user_id
1322 * @return array Contains the blog_id, post_id, post_date_gmt, and post_gmt_ts
1324 function get_most_recent_post_of_user( $user_id ) {
1327 $user_blogs = get_blogs_of_user( (int) $user_id );
1328 $most_recent_post = array();
1330 // Walk through each blog and get the most recent post
1331 // published by $user_id
1332 foreach ( (array) $user_blogs as $blog ) {
1333 $prefix = $wpdb->get_blog_prefix( $blog->userblog_id );
1334 $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", $user_id ), ARRAY_A);
1336 // Make sure we found a post
1337 if ( isset($recent_post['ID']) ) {
1338 $post_gmt_ts = strtotime($recent_post['post_date_gmt']);
1340 // If this is the first post checked or if this post is
1341 // newer than the current recent post, make it the new
1342 // most recent post.
1343 if ( !isset($most_recent_post['post_gmt_ts']) || ( $post_gmt_ts > $most_recent_post['post_gmt_ts'] ) ) {
1344 $most_recent_post = array(
1345 'blog_id' => $blog->userblog_id,
1346 'post_id' => $recent_post['ID'],
1347 'post_date_gmt' => $recent_post['post_date_gmt'],
1348 'post_gmt_ts' => $post_gmt_ts
1354 return $most_recent_post;
1360 * Get the size of a directory.
1362 * A helper function that is used primarily to check whether
1363 * a blog has exceeded its allowed upload space.
1366 * @uses recurse_dirsize()
1368 * @param string $directory
1371 function get_dirsize( $directory ) {
1372 $dirsize = get_transient( 'dirsize_cache' );
1373 if ( is_array( $dirsize ) && isset( $dirsize[ $directory ][ 'size' ] ) )
1374 return $dirsize[ $directory ][ 'size' ];
1376 if ( false == is_array( $dirsize ) )
1379 $dirsize[ $directory ][ 'size' ] = recurse_dirsize( $directory );
1381 set_transient( 'dirsize_cache', $dirsize, HOUR_IN_SECONDS );
1382 return $dirsize[ $directory ][ 'size' ];
1386 * Get the size of a directory recursively.
1388 * Used by get_dirsize() to get a directory's size when it contains
1389 * other directories.
1393 * @param string $directory
1396 function recurse_dirsize( $directory ) {
1399 $directory = untrailingslashit( $directory );
1401 if ( !file_exists($directory) || !is_dir( $directory ) || !is_readable( $directory ) )
1404 if ($handle = opendir($directory)) {
1405 while(($file = readdir($handle)) !== false) {
1406 $path = $directory.'/'.$file;
1407 if ($file != '.' && $file != '..') {
1408 if (is_file($path)) {
1409 $size += filesize($path);
1410 } elseif (is_dir($path)) {
1411 $handlesize = recurse_dirsize($path);
1412 if ($handlesize > 0)
1413 $size += $handlesize;
1423 * Check an array of MIME types against a whitelist.
1425 * WordPress ships with a set of allowed upload filetypes,
1426 * which is defined in wp-includes/functions.php in
1427 * get_allowed_mime_types(). This function is used to filter
1428 * that list against the filetype whitelist provided by Multisite
1429 * Super Admins at wp-admin/network/settings.php.
1433 * @param array $mimes
1436 function check_upload_mimes( $mimes ) {
1437 $site_exts = explode( ' ', get_site_option( 'upload_filetypes' ) );
1438 foreach ( $site_exts as $ext ) {
1439 foreach ( $mimes as $ext_pattern => $mime ) {
1440 if ( $ext != '' && strpos( $ext_pattern, $ext ) !== false )
1441 $site_mimes[$ext_pattern] = $mime;
1448 * Update a blog's post count.
1450 * WordPress MS stores a blog's post count as an option so as
1451 * to avoid extraneous COUNTs when a blog's details are fetched
1452 * with get_blog_details(). This function is called when posts
1453 * are published to make sure the count stays current.
1457 function update_posts_count( $deprecated = '' ) {
1459 update_option( 'post_count', (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->posts} WHERE post_status = 'publish' and post_type = 'post'" ) );
1463 * Logs user registrations.
1467 * @param int $blog_id
1468 * @param int $user_id
1470 function wpmu_log_new_registrations( $blog_id, $user_id ) {
1472 $user = get_userdata( (int) $user_id );
1473 $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')) );
1477 * Maintains a canonical list of terms by syncing terms created for each blog with the global terms table.
1481 * @see term_id_filter
1483 * @param int $term_id An ID for a term on the current blog.
1484 * @return int An ID from the global terms table mapped from $term_id.
1486 function global_terms( $term_id, $deprecated = '' ) {
1488 static $global_terms_recurse = null;
1490 if ( !global_terms_enabled() )
1493 // prevent a race condition
1494 $recurse_start = false;
1495 if ( $global_terms_recurse === null ) {
1496 $recurse_start = true;
1497 $global_terms_recurse = 1;
1498 } elseif ( 10 < $global_terms_recurse++ ) {
1502 $term_id = intval( $term_id );
1503 $c = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->terms WHERE term_id = %d", $term_id ) );
1505 $global_id = $wpdb->get_var( $wpdb->prepare( "SELECT cat_ID FROM $wpdb->sitecategories WHERE category_nicename = %s", $c->slug ) );
1506 if ( $global_id == null ) {
1507 $used_global_id = $wpdb->get_var( $wpdb->prepare( "SELECT cat_ID FROM $wpdb->sitecategories WHERE cat_ID = %d", $c->term_id ) );
1508 if ( null == $used_global_id ) {
1509 $wpdb->insert( $wpdb->sitecategories, array( 'cat_ID' => $term_id, 'cat_name' => $c->name, 'category_nicename' => $c->slug ) );
1510 $global_id = $wpdb->insert_id;
1511 if ( empty( $global_id ) )
1514 $max_global_id = $wpdb->get_var( "SELECT MAX(cat_ID) FROM $wpdb->sitecategories" );
1515 $max_local_id = $wpdb->get_var( "SELECT MAX(term_id) FROM $wpdb->terms" );
1516 $new_global_id = max( $max_global_id, $max_local_id ) + mt_rand( 100, 400 );
1517 $wpdb->insert( $wpdb->sitecategories, array( 'cat_ID' => $new_global_id, 'cat_name' => $c->name, 'category_nicename' => $c->slug ) );
1518 $global_id = $wpdb->insert_id;
1520 } elseif ( $global_id != $term_id ) {
1521 $local_id = $wpdb->get_row( $wpdb->prepare( "SELECT term_id FROM $wpdb->terms WHERE term_id = %d", $global_id ) );
1522 if ( null != $local_id )
1523 $local_id = global_terms( $local_id );
1524 if ( 10 < $global_terms_recurse )
1525 $global_id = $term_id;
1528 if ( $global_id != $term_id ) {
1529 if ( get_option( 'default_category' ) == $term_id )
1530 update_option( 'default_category', $global_id );
1532 $wpdb->update( $wpdb->terms, array('term_id' => $global_id), array('term_id' => $term_id) );
1533 $wpdb->update( $wpdb->term_taxonomy, array('term_id' => $global_id), array('term_id' => $term_id) );
1534 $wpdb->update( $wpdb->term_taxonomy, array('parent' => $global_id), array('parent' => $term_id) );
1536 clean_term_cache($term_id);
1538 if( $recurse_start )
1539 $global_terms_recurse = null;
1545 * Ensure that the current site's domain is listed in the allowed redirect host list.
1547 * @see wp_validate_redirect()
1550 * @return array The current site's domain
1552 function redirect_this_site( $deprecated = '' ) {
1553 global $current_site;
1554 return array( $current_site->domain );
1558 * Check whether an upload is too big.
1562 * @param array $upload
1563 * @return mixed If the upload is under the size limit, $upload is returned. Otherwise returns an error message.
1565 function upload_is_file_too_big( $upload ) {
1566 if ( is_array( $upload ) == false || defined( 'WP_IMPORTING' ) || get_site_option( 'upload_space_check_disabled' ) )
1569 if ( strlen( $upload['bits'] ) > ( 1024 * get_site_option( 'fileupload_maxk', 1500 ) ) )
1570 return sprintf( __( 'This file is too big. Files must be less than %d KB in size.' ) . '<br />', get_site_option( 'fileupload_maxk', 1500 ));
1576 * Add a nonce field to the signup page.
1579 * @uses wp_nonce_field()
1581 function signup_nonce_fields() {
1583 echo "<input type='hidden' name='signup_form_id' value='{$id}' />";
1584 wp_nonce_field('signup_form_' . $id, '_signup_form', false);
1588 * Process the signup nonce created in signup_nonce_fields().
1591 * @uses wp_create_nonce()
1593 * @param array $result
1596 function signup_nonce_check( $result ) {
1597 if ( !strpos( $_SERVER[ 'PHP_SELF' ], 'wp-signup.php' ) )
1600 if ( wp_create_nonce('signup_form_' . $_POST[ 'signup_form_id' ]) != $_POST['_signup_form'] )
1601 wp_die( __( 'Please try again.' ) );
1607 * Correct 404 redirects when NOBLOGREDIRECT is defined.
1611 function maybe_redirect_404() {
1612 global $current_site;
1613 if ( is_main_site() && is_404() && defined( 'NOBLOGREDIRECT' ) && ( $destination = apply_filters( 'blog_redirect_404', NOBLOGREDIRECT ) ) ) {
1614 if ( $destination == '%siteurl%' )
1615 $destination = network_home_url();
1616 wp_redirect( $destination );
1622 * Add a new user to a blog by visiting /newbloguser/username/.
1624 * This will only work when the user's details are saved as an option
1625 * keyed as 'new_user_x', where 'x' is the username of the user to be
1626 * added, as when a user is invited through the regular WP Add User interface.
1629 * @uses add_existing_user_to_blog()
1631 function maybe_add_existing_user_to_blog() {
1632 if ( false === strpos( $_SERVER[ 'REQUEST_URI' ], '/newbloguser/' ) )
1635 $parts = explode( '/', $_SERVER[ 'REQUEST_URI' ] );
1636 $key = array_pop( $parts );
1639 $key = array_pop( $parts );
1641 $details = get_option( 'new_user_' . $key );
1642 if ( !empty( $details ) )
1643 delete_option( 'new_user_' . $key );
1645 if ( empty( $details ) || is_wp_error( add_existing_user_to_blog( $details ) ) )
1646 wp_die( sprintf(__('An error occurred adding you to this site. Back to the <a href="%s">homepage</a>.'), home_url() ) );
1648 wp_die( sprintf( __( 'You have been added to this site. Please visit the <a href="%s">homepage</a> or <a href="%s">log in</a> using your username and password.' ), home_url(), admin_url() ), __( 'WordPress › Success' ) );
1652 * Add a user to a blog based on details from maybe_add_existing_user_to_blog().
1655 * @uses add_user_to_blog()
1657 * @param array $details
1659 function add_existing_user_to_blog( $details = false ) {
1662 if ( is_array( $details ) ) {
1663 $result = add_user_to_blog( $blog_id, $details[ 'user_id' ], $details[ 'role' ] );
1664 do_action( 'added_existing_user', $details[ 'user_id' ], $result );
1670 * Add a newly created user to the appropriate blog
1672 * To add a user in general, use add_user_to_blog(). This function
1673 * is specifically hooked into the wpmu_activate_user action.
1676 * @see add_user_to_blog()
1678 * @param int $user_id
1679 * @param mixed $password Ignored.
1680 * @param array $meta
1682 function add_new_user_to_blog( $user_id, $password, $meta ) {
1683 global $current_site;
1684 if ( !empty( $meta[ 'add_to_blog' ] ) ) {
1685 $blog_id = $meta[ 'add_to_blog' ];
1686 $role = $meta[ 'new_role' ];
1687 remove_user_from_blog($user_id, $current_site->blog_id); // remove user from main blog.
1688 add_user_to_blog( $blog_id, $user_id, $role );
1689 update_user_meta( $user_id, 'primary_blog', $blog_id );
1694 * Correct From host on outgoing mail to match the site domain
1698 function fix_phpmailer_messageid( $phpmailer ) {
1699 global $current_site;
1700 $phpmailer->Hostname = $current_site->domain;
1704 * Check to see whether a user is marked as a spammer, based on user login.
1707 * @uses get_user_by()
1709 * @param string $user_login Optional. Defaults to current user.
1712 function is_user_spammy( $user_login = null ) {
1714 $user = get_user_by( 'login', $user_login );
1716 $user = wp_get_current_user();
1718 return $user && isset( $user->spam ) && 1 == $user->spam;
1722 * Update this blog's 'public' setting in the global blogs table.
1724 * Public blogs have a setting of 1, private blogs are 0.
1727 * @uses update_blog_status()
1729 * @param int $old_value
1730 * @param int $value The new public value
1733 function update_blog_public( $old_value, $value ) {
1734 update_blog_status( get_current_blog_id(), 'public', (int) $value );
1736 add_action('update_option_blog_public', 'update_blog_public', 10, 2);
1739 * Get the "dashboard blog", the blog where users without a blog edit their profile data.
1742 * @uses get_blog_details()
1746 function get_dashboard_blog() {
1747 if ( $blog = get_site_option( 'dashboard_blog' ) )
1748 return get_blog_details( $blog );
1750 return get_blog_details( $GLOBALS['current_site']->blog_id );
1754 * Check whether a usermeta key has to do with the current blog.
1757 * @uses wp_get_current_user()
1759 * @param string $key
1760 * @param int $user_id Optional. Defaults to current user.
1761 * @param int $blog_id Optional. Defaults to current blog.
1764 function is_user_option_local( $key, $user_id = 0, $blog_id = 0 ) {
1767 $current_user = wp_get_current_user();
1768 if ( $user_id == 0 )
1769 $user_id = $current_user->ID;
1770 if ( $blog_id == 0 )
1771 $blog_id = $wpdb->blogid;
1773 $local_key = $wpdb->get_blog_prefix( $blog_id ) . $key;
1775 if ( isset( $current_user->$local_key ) )
1782 * Check whether users can self-register, based on Network settings.
1788 function users_can_register_signup_filter() {
1789 $registration = get_site_option('registration');
1790 if ( $registration == 'all' || $registration == 'user' )
1795 add_filter('option_users_can_register', 'users_can_register_signup_filter');
1798 * Ensure that the welcome message is not empty. Currently unused.
1802 * @param string $text
1805 function welcome_user_msg_filter( $text ) {
1807 remove_filter( 'site_option_welcome_user_email', 'welcome_user_msg_filter' );
1808 $text = __( 'Dear User,
1810 Your new account is set up.
1812 You can log in with the following information:
1819 --The Team @ SITE_NAME' );
1820 update_site_option( 'welcome_user_email', $text );
1824 add_filter( 'site_option_welcome_user_email', 'welcome_user_msg_filter' );
1827 * Whether to force SSL on content.
1831 * @param string|bool $force
1832 * @return bool True if forced, false if not forced.
1834 function force_ssl_content( $force = '' ) {
1835 static $forced_content;
1837 if ( '' != $force ) {
1838 $old_forced = $forced_content;
1839 $forced_content = $force;
1843 return $forced_content;
1847 * Formats a URL to use https.
1849 * Useful as a filter.
1854 * @return string URL with https as the scheme
1856 function filter_SSL( $url ) {
1857 if ( ! is_string( $url ) )
1858 return get_bloginfo( 'url' ); // Return home blog url with proper scheme
1860 if ( force_ssl_content() && is_ssl() )
1861 $url = set_url_scheme( $url, 'https' );
1867 * Schedule update of the network-wide counts for the current network.
1871 function wp_schedule_update_network_counts() {
1872 if ( !is_main_site() )
1875 if ( !wp_next_scheduled('update_network_counts') && !defined('WP_INSTALLING') )
1876 wp_schedule_event(time(), 'twicedaily', 'update_network_counts');
1880 * Update the network-wide counts for the current network.
1884 function wp_update_network_counts() {
1887 $count = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(blog_id) as c FROM $wpdb->blogs WHERE site_id = %d AND spam = '0' AND deleted = '0' and archived = '0'", $wpdb->siteid) );
1888 update_site_option( 'blog_count', $count );
1890 $count = $wpdb->get_var( "SELECT COUNT(ID) as c FROM $wpdb->users WHERE spam = '0' AND deleted = '0'" );
1891 update_site_option( 'user_count', $count );
1895 * Returns the space used by the current blog.
1899 * @return int Used space in megabytes
1901 function get_space_used() {
1902 // Allow for an alternative way of tracking storage space used
1903 $space_used = apply_filters( 'pre_get_space_used', false );
1904 if ( false === $space_used ) {
1905 $upload_dir = wp_upload_dir();
1906 $space_used = get_dirsize( $upload_dir['basedir'] ) / 1024 / 1024;
1913 * Returns the upload quota for the current blog.
1917 * @return int Quota in megabytes
1919 function get_space_allowed() {
1920 $space_allowed = get_option( 'blog_upload_space' );
1922 if ( ! is_numeric( $space_allowed ) )
1923 $space_allowed = get_site_option( 'blog_upload_space' );
1925 if ( empty( $space_allowed ) || ! is_numeric( $space_allowed ) )
1926 $space_allowed = 50;
1928 return $space_allowed;
1932 * Determines if there is any upload space left in the current blog's quota.
1936 * @return int of upload space available in bytes
1938 function get_upload_space_available() {
1939 $space_allowed = get_space_allowed() * 1024 * 1024;
1940 if ( get_site_option( 'upload_space_check_disabled' ) )
1941 return $space_allowed;
1943 $space_used = get_space_used() * 1024 * 1024;
1945 if ( ( $space_allowed - $space_used ) <= 0 )
1948 return $space_allowed - $space_used;
1952 * Determines if there is any upload space left in the current blog's quota.
1955 * @return bool True if space is available, false otherwise.
1957 function is_upload_space_available() {
1958 if ( get_site_option( 'upload_space_check_disabled' ) )
1961 return (bool) get_upload_space_available();
1967 * @return int of upload size limit in bytes
1969 function upload_size_limit_filter( $size ) {
1970 $fileupload_maxk = 1024 * get_site_option( 'fileupload_maxk', 1500 );
1971 if ( get_site_option( 'upload_space_check_disabled' ) )
1972 return min( $size, $fileupload_maxk );
1974 return min( $size, $fileupload_maxk, get_upload_space_available() );
1978 * Whether or not we have a large network.
1980 * The default criteria for a large network is either more than 10,000 users or more than 10,000 sites.
1981 * Plugins can alter this criteria using the 'wp_is_large_network' filter.
1984 * @param string $using 'sites or 'users'. Default is 'sites'.
1985 * @return bool True if the network meets the criteria for large. False otherwise.
1987 function wp_is_large_network( $using = 'sites' ) {
1988 if ( 'users' == $using ) {
1989 $count = get_user_count();
1990 return apply_filters( 'wp_is_large_network', $count > 10000, 'users', $count );
1993 $count = get_blog_count();
1994 return apply_filters( 'wp_is_large_network', $count > 10000, 'sites', $count );