9 * Authenticate user with remember capability.
11 * The credentials is an array that has 'user_login', 'user_password', and
12 * 'remember' indices. If the credentials is not given, then the log in form
13 * will be assumed and used if set.
15 * The various authentication cookies will be set by this function and will be
16 * set for a longer period depending on if the 'remember' credential is set to
21 * @param array $credentials Optional. User info in order to sign on.
22 * @param bool $secure_cookie Optional. Whether to use secure cookie.
23 * @return object Either WP_Error on failure, or WP_User on success.
25 function wp_signon( $credentials = '', $secure_cookie = '' ) {
26 if ( empty($credentials) ) {
27 if ( ! empty($_POST['log']) )
28 $credentials['user_login'] = $_POST['log'];
29 if ( ! empty($_POST['pwd']) )
30 $credentials['user_password'] = $_POST['pwd'];
31 if ( ! empty($_POST['rememberme']) )
32 $credentials['remember'] = $_POST['rememberme'];
35 if ( !empty($credentials['remember']) )
36 $credentials['remember'] = true;
38 $credentials['remember'] = false;
40 // TODO do we deprecate the wp_authentication action?
41 do_action_ref_array('wp_authenticate', array(&$credentials['user_login'], &$credentials['user_password']));
43 if ( '' === $secure_cookie )
44 $secure_cookie = is_ssl();
46 $secure_cookie = apply_filters('secure_signon_cookie', $secure_cookie, $credentials);
48 global $auth_secure_cookie; // XXX ugly hack to pass this to wp_authenticate_cookie
49 $auth_secure_cookie = $secure_cookie;
51 add_filter('authenticate', 'wp_authenticate_cookie', 30, 3);
53 $user = wp_authenticate($credentials['user_login'], $credentials['user_password']);
55 if ( is_wp_error($user) ) {
56 if ( $user->get_error_codes() == array('empty_username', 'empty_password') ) {
57 $user = new WP_Error('', '');
63 wp_set_auth_cookie($user->ID, $credentials['remember'], $secure_cookie);
64 do_action('wp_login', $user->user_login, $user);
70 * Authenticate the user using the username and password.
72 add_filter('authenticate', 'wp_authenticate_username_password', 20, 3);
73 function wp_authenticate_username_password($user, $username, $password) {
74 if ( is_a($user, 'WP_User') ) { return $user; }
76 if ( empty($username) || empty($password) ) {
77 $error = new WP_Error();
79 if ( empty($username) )
80 $error->add('empty_username', __('<strong>ERROR</strong>: The username field is empty.'));
82 if ( empty($password) )
83 $error->add('empty_password', __('<strong>ERROR</strong>: The password field is empty.'));
88 $userdata = get_user_by('login', $username);
91 return new WP_Error('invalid_username', sprintf(__('<strong>ERROR</strong>: Invalid username. <a href="%s" title="Password Lost and Found">Lost your password</a>?'), wp_lostpassword_url()));
93 if ( is_multisite() ) {
94 // Is user marked as spam?
95 if ( 1 == $userdata->spam)
96 return new WP_Error('invalid_username', __('<strong>ERROR</strong>: Your account has been marked as a spammer.'));
98 // Is a user's blog marked as spam?
99 if ( !is_super_admin( $userdata->ID ) && isset($userdata->primary_blog) ) {
100 $details = get_blog_details( $userdata->primary_blog );
101 if ( is_object( $details ) && $details->spam == 1 )
102 return new WP_Error('blog_suspended', __('Site Suspended.'));
106 $userdata = apply_filters('wp_authenticate_user', $userdata, $password);
107 if ( is_wp_error($userdata) )
110 if ( !wp_check_password($password, $userdata->user_pass, $userdata->ID) )
111 return new WP_Error( 'incorrect_password', sprintf( __( '<strong>ERROR</strong>: The password you entered for the username <strong>%1$s</strong> is incorrect. <a href="%2$s" title="Password Lost and Found">Lost your password</a>?' ),
112 $username, wp_lostpassword_url() ) );
114 $user = new WP_User($userdata->ID);
119 * Authenticate the user using the WordPress auth cookie.
121 function wp_authenticate_cookie($user, $username, $password) {
122 if ( is_a($user, 'WP_User') ) { return $user; }
124 if ( empty($username) && empty($password) ) {
125 $user_id = wp_validate_auth_cookie();
127 return new WP_User($user_id);
129 global $auth_secure_cookie;
131 if ( $auth_secure_cookie )
132 $auth_cookie = SECURE_AUTH_COOKIE;
134 $auth_cookie = AUTH_COOKIE;
136 if ( !empty($_COOKIE[$auth_cookie]) )
137 return new WP_Error('expired_session', __('Please log in again.'));
139 // If the cookie is not set, be silent.
146 * Number of posts user has written.
149 * @uses $wpdb WordPress database object for queries.
151 * @param int $userid User ID.
152 * @return int Amount of posts user has written.
154 function count_user_posts($userid) {
157 $where = get_posts_by_author_sql('post', TRUE, $userid);
159 $count = $wpdb->get_var( "SELECT COUNT(*) FROM $wpdb->posts $where" );
161 return apply_filters('get_usernumposts', $count, $userid);
165 * Number of posts written by a list of users.
168 * @param array $user_ids Array of user IDs.
169 * @param string|array $post_type Optional. Post type to check. Defaults to post.
170 * @return array Amount of posts each user has written.
172 function count_many_users_posts($users, $post_type = 'post' ) {
176 if ( empty( $users ) || ! is_array( $users ) )
179 $userlist = implode( ',', array_map( 'absint', $users ) );
180 $where = get_posts_by_author_sql( $post_type );
182 $result = $wpdb->get_results( "SELECT post_author, COUNT(*) FROM $wpdb->posts $where AND post_author IN ($userlist) GROUP BY post_author", ARRAY_N );
183 foreach ( $result as $row ) {
184 $count[ $row[0] ] = $row[1];
187 foreach ( $users as $id ) {
188 if ( ! isset( $count[ $id ] ) )
196 * Check that the user login name and password is correct.
199 * @todo xmlrpc only. Maybe move to xmlrpc.php.
201 * @param string $user_login User name.
202 * @param string $user_pass User password.
203 * @return bool False if does not authenticate, true if username and password authenticates.
205 function user_pass_ok($user_login, $user_pass) {
206 $user = wp_authenticate($user_login, $user_pass);
207 if ( is_wp_error($user) )
214 // User option functions
218 * Get the current user's ID
222 * @uses wp_get_current_user
224 * @return int The current user's ID
226 function get_current_user_id() {
227 $user = wp_get_current_user();
228 return ( isset( $user->ID ) ? (int) $user->ID : 0 );
232 * Retrieve user option that can be either per Site or per Network.
234 * If the user ID is not given, then the current user will be used instead. If
235 * the user ID is given, then the user data will be retrieved. The filter for
236 * the result, will also pass the original option name and finally the user data
237 * object as the third parameter.
239 * The option will first check for the per site name and then the per Network name.
242 * @uses $wpdb WordPress database object for queries.
243 * @uses apply_filters() Calls 'get_user_option_$option' hook with result,
244 * option parameter, and user data object.
246 * @param string $option User option name.
247 * @param int $user Optional. User ID.
248 * @param bool $deprecated Use get_option() to check for an option in the options table.
251 function get_user_option( $option, $user = 0, $deprecated = '' ) {
254 if ( !empty( $deprecated ) )
255 _deprecated_argument( __FUNCTION__, '3.0' );
257 if ( empty( $user ) )
258 $user = wp_get_current_user();
260 $user = new WP_User( $user );
262 if ( ! isset( $user->ID ) )
265 if ( $user->has_prop( $wpdb->prefix . $option ) ) // Blog specific
266 $result = $user->get( $wpdb->prefix . $option );
267 elseif ( $user->has_prop( $option ) ) // User specific and cross-blog
268 $result = $user->get( $option );
272 return apply_filters("get_user_option_{$option}", $result, $option, $user);
276 * Update user option with global blog capability.
278 * User options are just like user metadata except that they have support for
279 * global blog options. If the 'global' parameter is false, which it is by default
280 * it will prepend the WordPress table prefix to the option name.
282 * Deletes the user option if $newvalue is empty.
285 * @uses $wpdb WordPress database object for queries
287 * @param int $user_id User ID
288 * @param string $option_name User option name.
289 * @param mixed $newvalue User option value.
290 * @param bool $global Optional. Whether option name is global or blog specific. Default false (blog specific).
293 function update_user_option( $user_id, $option_name, $newvalue, $global = false ) {
297 $option_name = $wpdb->prefix . $option_name;
299 // For backward compatibility. See differences between update_user_meta() and deprecated update_usermeta().
300 // http://core.trac.wordpress.org/ticket/13088
301 if ( is_null( $newvalue ) || is_scalar( $newvalue ) && empty( $newvalue ) )
302 return delete_user_meta( $user_id, $option_name );
304 return update_user_meta( $user_id, $option_name, $newvalue );
308 * Delete user option with global blog capability.
310 * User options are just like user metadata except that they have support for
311 * global blog options. If the 'global' parameter is false, which it is by default
312 * it will prepend the WordPress table prefix to the option name.
315 * @uses $wpdb WordPress database object for queries
317 * @param int $user_id User ID
318 * @param string $option_name User option name.
319 * @param bool $global Optional. Whether option name is global or blog specific. Default false (blog specific).
322 function delete_user_option( $user_id, $option_name, $global = false ) {
326 $option_name = $wpdb->prefix . $option_name;
327 return delete_user_meta( $user_id, $option_name );
331 * WordPress User Query class.
335 class WP_User_Query {
338 * List of found user ids
347 * Total number of found users for the current query
353 var $total_users = 0;
368 * @param string|array $args The query variables
369 * @return WP_User_Query
371 function __construct( $query = null ) {
372 if ( !empty( $query ) ) {
373 $this->query_vars = wp_parse_args( $query, array(
374 'blog_id' => $GLOBALS['blog_id'],
378 'meta_compare' => '',
379 'include' => array(),
380 'exclude' => array(),
382 'orderby' => 'login',
386 'count_total' => true,
391 $this->prepare_query();
397 * Prepare the query variables
402 function prepare_query() {
405 $qv = &$this->query_vars;
407 if ( is_array( $qv['fields'] ) ) {
408 $qv['fields'] = array_unique( $qv['fields'] );
410 $this->query_fields = array();
411 foreach ( $qv['fields'] as $field )
412 $this->query_fields[] = $wpdb->users . '.' . esc_sql( $field );
413 $this->query_fields = implode( ',', $this->query_fields );
414 } elseif ( 'all' == $qv['fields'] ) {
415 $this->query_fields = "$wpdb->users.*";
417 $this->query_fields = "$wpdb->users.ID";
420 if ( $this->query_vars['count_total'] )
421 $this->query_fields = 'SQL_CALC_FOUND_ROWS ' . $this->query_fields;
423 $this->query_from = "FROM $wpdb->users";
424 $this->query_where = "WHERE 1=1";
427 if ( in_array( $qv['orderby'], array('nicename', 'email', 'url', 'registered') ) ) {
428 $orderby = 'user_' . $qv['orderby'];
429 } elseif ( in_array( $qv['orderby'], array('user_nicename', 'user_email', 'user_url', 'user_registered') ) ) {
430 $orderby = $qv['orderby'];
431 } elseif ( 'name' == $qv['orderby'] || 'display_name' == $qv['orderby'] ) {
432 $orderby = 'display_name';
433 } elseif ( 'post_count' == $qv['orderby'] ) {
434 // todo: avoid the JOIN
435 $where = get_posts_by_author_sql('post');
436 $this->query_from .= " LEFT OUTER JOIN (
437 SELECT post_author, COUNT(*) as post_count
441 ) p ON ({$wpdb->users}.ID = p.post_author)
443 $orderby = 'post_count';
444 } elseif ( 'ID' == $qv['orderby'] || 'id' == $qv['orderby'] ) {
447 $orderby = 'user_login';
450 $qv['order'] = strtoupper( $qv['order'] );
451 if ( 'ASC' == $qv['order'] )
455 $this->query_orderby = "ORDER BY $orderby $order";
458 if ( $qv['number'] ) {
460 $this->query_limit = $wpdb->prepare("LIMIT %d, %d", $qv['offset'], $qv['number']);
462 $this->query_limit = $wpdb->prepare("LIMIT %d", $qv['number']);
465 $search = trim( $qv['search'] );
467 $leading_wild = ( ltrim($search, '*') != $search );
468 $trailing_wild = ( rtrim($search, '*') != $search );
469 if ( $leading_wild && $trailing_wild )
471 elseif ( $leading_wild )
473 elseif ( $trailing_wild )
478 $search = trim($search, '*');
480 if ( false !== strpos( $search, '@') )
481 $search_columns = array('user_email');
482 elseif ( is_numeric($search) )
483 $search_columns = array('user_login', 'ID');
484 elseif ( preg_match('|^https?://|', $search) )
485 $search_columns = array('user_url');
487 $search_columns = array('user_login', 'user_nicename');
489 $this->query_where .= $this->get_search_sql( $search, $search_columns, $wild );
492 $blog_id = absint( $qv['blog_id'] );
494 if ( 'authors' == $qv['who'] && $blog_id ) {
495 $qv['meta_key'] = $wpdb->get_blog_prefix( $blog_id ) . 'user_level';
496 $qv['meta_value'] = 0;
497 $qv['meta_compare'] = '!=';
498 $qv['blog_id'] = $blog_id = 0; // Prevent extra meta query
501 $role = trim( $qv['role'] );
503 if ( $blog_id && ( $role || is_multisite() ) ) {
504 $cap_meta_query = array();
505 $cap_meta_query['key'] = $wpdb->get_blog_prefix( $blog_id ) . 'capabilities';
508 $cap_meta_query['value'] = '"' . $role . '"';
509 $cap_meta_query['compare'] = 'like';
512 $qv['meta_query'][] = $cap_meta_query;
515 $meta_query = new WP_Meta_Query();
516 $meta_query->parse_query_vars( $qv );
518 if ( !empty( $meta_query->queries ) ) {
519 $clauses = $meta_query->get_sql( 'user', $wpdb->users, 'ID', $this );
520 $this->query_from .= $clauses['join'];
521 $this->query_where .= $clauses['where'];
523 if ( 'OR' == $meta_query->relation )
524 $this->query_fields = 'DISTINCT ' . $this->query_fields;
527 if ( !empty( $qv['include'] ) ) {
528 $ids = implode( ',', wp_parse_id_list( $qv['include'] ) );
529 $this->query_where .= " AND $wpdb->users.ID IN ($ids)";
530 } elseif ( !empty($qv['exclude']) ) {
531 $ids = implode( ',', wp_parse_id_list( $qv['exclude'] ) );
532 $this->query_where .= " AND $wpdb->users.ID NOT IN ($ids)";
535 do_action_ref_array( 'pre_user_query', array( &$this ) );
539 * Execute the query, with the current variables
547 if ( is_array( $this->query_vars['fields'] ) || 'all' == $this->query_vars['fields'] ) {
548 $this->results = $wpdb->get_results("SELECT $this->query_fields $this->query_from $this->query_where $this->query_orderby $this->query_limit");
550 $this->results = $wpdb->get_col("SELECT $this->query_fields $this->query_from $this->query_where $this->query_orderby $this->query_limit");
553 if ( $this->query_vars['count_total'] )
554 $this->total_users = $wpdb->get_var( apply_filters( 'found_users_query', 'SELECT FOUND_ROWS()' ) );
556 if ( !$this->results )
559 if ( 'all_with_meta' == $this->query_vars['fields'] ) {
560 cache_users( $this->results );
563 foreach ( $this->results as $userid )
564 $r[ $userid ] = new WP_User( $userid, '', $this->query_vars['blog_id'] );
571 * Used internally to generate an SQL string for searching across multiple columns
576 * @param string $string
578 * @param bool $wild Whether to allow wildcard searches. Default is false for Network Admin, true for
579 * single site. Single site allows leading and trailing wildcards, Network Admin only trailing.
582 function get_search_sql( $string, $cols, $wild = false ) {
583 $string = esc_sql( $string );
586 $leading_wild = ( 'leading' == $wild || 'both' == $wild ) ? '%' : '';
587 $trailing_wild = ( 'trailing' == $wild || 'both' == $wild ) ? '%' : '';
588 foreach ( $cols as $col ) {
590 $searches[] = "$col = '$string'";
592 $searches[] = "$col LIKE '$leading_wild" . like_escape($string) . "$trailing_wild'";
595 return ' AND (' . implode(' OR ', $searches) . ')';
599 * Return the list of users
606 function get_results() {
607 return $this->results;
611 * Return the total number of users for the current query
618 function get_total() {
619 return $this->total_users;
624 * Retrieve list of users matching criteria.
628 * @uses WP_User_Query See for default arguments and information.
630 * @param array $args Optional.
631 * @return array List of users.
633 function get_users( $args = array() ) {
635 $args = wp_parse_args( $args );
636 $args['count_total'] = false;
638 $user_search = new WP_User_Query($args);
640 return (array) $user_search->get_results();
644 * Get the blogs a user belongs to.
648 * @param int $user_id User ID
649 * @param bool $all Whether to retrieve all blogs, or only blogs that are not marked as deleted, archived, or spam.
650 * @return array A list of the user's blogs. False if the user was not found or an empty array if the user has no blogs.
652 function get_blogs_of_user( $user_id, $all = false ) {
655 $user_id = (int) $user_id;
657 // Logged out users can't have blogs
658 if ( empty( $user_id ) )
661 $keys = get_user_meta( $user_id );
662 if ( empty( $keys ) )
665 if ( ! is_multisite() ) {
666 $blog_id = get_current_blog_id();
667 $blogs = array( $blog_id => new stdClass );
668 $blogs[ $blog_id ]->userblog_id = $blog_id;
669 $blogs[ $blog_id ]->blogname = get_option('blogname');
670 $blogs[ $blog_id ]->domain = '';
671 $blogs[ $blog_id ]->path = '';
672 $blogs[ $blog_id ]->site_id = 1;
673 $blogs[ $blog_id ]->siteurl = get_option('siteurl');
679 if ( isset( $keys[ $wpdb->base_prefix . 'capabilities' ] ) && defined( 'MULTISITE' ) ) {
680 $blog = get_blog_details( 1 );
681 if ( $blog && isset( $blog->domain ) && ( $all || ( ! $blog->archived && ! $blog->spam && ! $blog->deleted ) ) ) {
682 $blogs[ 1 ] = (object) array(
684 'blogname' => $blog->blogname,
685 'domain' => $blog->domain,
686 'path' => $blog->path,
687 'site_id' => $blog->site_id,
688 'siteurl' => $blog->siteurl,
691 unset( $keys[ $wpdb->base_prefix . 'capabilities' ] );
694 $keys = array_keys( $keys );
696 foreach ( $keys as $key ) {
697 if ( 'capabilities' !== substr( $key, -12 ) )
699 if ( 0 !== strpos( $key, $wpdb->base_prefix ) )
701 $blog_id = str_replace( array( $wpdb->base_prefix, '_capabilities' ), '', $key );
702 if ( ! is_numeric( $blog_id ) )
705 $blog_id = (int) $blog_id;
706 $blog = get_blog_details( $blog_id );
707 if ( $blog && isset( $blog->domain ) && ( $all || ( ! $blog->archived && ! $blog->spam && ! $blog->deleted ) ) ) {
708 $blogs[ $blog_id ] = (object) array(
709 'userblog_id' => $blog_id,
710 'blogname' => $blog->blogname,
711 'domain' => $blog->domain,
712 'path' => $blog->path,
713 'site_id' => $blog->site_id,
714 'siteurl' => $blog->siteurl,
719 return apply_filters( 'get_blogs_of_user', $blogs, $user_id, $all );
723 * Find out whether a user is a member of a given blog.
726 * @uses get_blogs_of_user()
728 * @param int $user_id The unique ID of the user
729 * @param int $blog Optional. If no blog_id is provided, current site is used
732 function is_user_member_of_blog( $user_id = 0, $blog_id = 0 ) {
733 $user_id = (int) $user_id;
734 $blog_id = (int) $blog_id;
736 if ( empty( $user_id ) )
737 $user_id = get_current_user_id();
739 if ( empty( $blog_id ) )
740 $blog_id = get_current_blog_id();
742 $blogs = get_blogs_of_user( $user_id );
743 if ( is_array( $blogs ) )
744 return array_key_exists( $blog_id, $blogs );
750 * Add meta data field to a user.
752 * Post meta data is called "Custom Fields" on the Administration Screens.
755 * @uses add_metadata()
756 * @link http://codex.wordpress.org/Function_Reference/add_user_meta
758 * @param int $user_id Post ID.
759 * @param string $meta_key Metadata name.
760 * @param mixed $meta_value Metadata value.
761 * @param bool $unique Optional, default is false. Whether the same key should not be added.
762 * @return bool False for failure. True for success.
764 function add_user_meta($user_id, $meta_key, $meta_value, $unique = false) {
765 return add_metadata('user', $user_id, $meta_key, $meta_value, $unique);
769 * Remove metadata matching criteria from a user.
771 * You can match based on the key, or key and value. Removing based on key and
772 * value, will keep from removing duplicate metadata with the same key. It also
773 * allows removing all metadata matching key, if needed.
776 * @uses delete_metadata()
777 * @link http://codex.wordpress.org/Function_Reference/delete_user_meta
779 * @param int $user_id user ID
780 * @param string $meta_key Metadata name.
781 * @param mixed $meta_value Optional. Metadata value.
782 * @return bool False for failure. True for success.
784 function delete_user_meta($user_id, $meta_key, $meta_value = '') {
785 return delete_metadata('user', $user_id, $meta_key, $meta_value);
789 * Retrieve user meta field for a user.
792 * @uses get_metadata()
793 * @link http://codex.wordpress.org/Function_Reference/get_user_meta
795 * @param int $user_id Post ID.
796 * @param string $key The meta key to retrieve.
797 * @param bool $single Whether to return a single value.
798 * @return mixed Will be an array if $single is false. Will be value of meta data field if $single
801 function get_user_meta($user_id, $key = '', $single = false) {
802 return get_metadata('user', $user_id, $key, $single);
806 * Update user meta field based on user ID.
808 * Use the $prev_value parameter to differentiate between meta fields with the
809 * same key and user ID.
811 * If the meta field for the user does not exist, it will be added.
814 * @uses update_metadata
815 * @link http://codex.wordpress.org/Function_Reference/update_user_meta
817 * @param int $user_id Post ID.
818 * @param string $meta_key Metadata key.
819 * @param mixed $meta_value Metadata value.
820 * @param mixed $prev_value Optional. Previous value to check before removing.
821 * @return bool False on failure, true if success.
823 function update_user_meta($user_id, $meta_key, $meta_value, $prev_value = '') {
824 return update_metadata('user', $user_id, $meta_key, $meta_value, $prev_value);
828 * Count number of users who have each of the user roles.
830 * Assumes there are neither duplicated nor orphaned capabilities meta_values.
831 * Assumes role names are unique phrases. Same assumption made by WP_User_Query::prepare_query()
832 * Using $strategy = 'time' this is CPU-intensive and should handle around 10^7 users.
833 * Using $strategy = 'memory' this is memory-intensive and should handle around 10^5 users, but see WP Bug #12257.
836 * @param string $strategy 'time' or 'memory'
837 * @return array Includes a grand total and an array of counts indexed by role strings.
839 function count_users($strategy = 'time') {
840 global $wpdb, $wp_roles;
843 $id = get_current_blog_id();
844 $blog_prefix = $wpdb->get_blog_prefix($id);
847 if ( 'time' == $strategy ) {
850 if ( ! isset( $wp_roles ) )
851 $wp_roles = new WP_Roles();
853 $avail_roles = $wp_roles->get_names();
855 // Build a CPU-intensive query that will return concise information.
856 $select_count = array();
857 foreach ( $avail_roles as $this_role => $name ) {
858 $select_count[] = "COUNT(NULLIF(`meta_value` LIKE '%" . like_escape($this_role) . "%', FALSE))";
860 $select_count = implode(', ', $select_count);
862 // Add the meta_value index to the selection list, then run the query.
863 $row = $wpdb->get_row( "SELECT $select_count, COUNT(*) FROM $wpdb->usermeta WHERE meta_key = '{$blog_prefix}capabilities'", ARRAY_N );
865 // Run the previous loop again to associate results with role names.
867 $role_counts = array();
868 foreach ( $avail_roles as $this_role => $name ) {
869 $count = (int) $row[$col++];
871 $role_counts[$this_role] = $count;
875 // Get the meta_value index from the end of the result set.
876 $total_users = (int) $row[$col];
878 $result['total_users'] = $total_users;
879 $result['avail_roles'] =& $role_counts;
881 $avail_roles = array();
883 $users_of_blog = $wpdb->get_col( "SELECT meta_value FROM $wpdb->usermeta WHERE meta_key = '{$blog_prefix}capabilities'" );
885 foreach ( $users_of_blog as $caps_meta ) {
886 $b_roles = unserialize($caps_meta);
887 if ( is_array($b_roles) ) {
888 foreach ( $b_roles as $b_role => $val ) {
889 if ( isset($avail_roles[$b_role]) ) {
890 $avail_roles[$b_role]++;
892 $avail_roles[$b_role] = 1;
898 $result['total_users'] = count( $users_of_blog );
899 $result['avail_roles'] =& $avail_roles;
906 // Private helper functions
910 * Set up global user vars.
912 * Used by wp_set_current_user() for back compat. Might be deprecated in the future.
915 * @global string $userdata User description.
916 * @global string $user_login The user username for logging in
917 * @global int $user_level The level of the user
918 * @global int $user_ID The ID of the user
919 * @global string $user_email The email address of the user
920 * @global string $user_url The url in the user's profile
921 * @global string $user_pass_md5 MD5 of the user's password
922 * @global string $user_identity The display name of the user
924 * @param int $for_user_id Optional. User ID to set up global data.
926 function setup_userdata($for_user_id = '') {
927 global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_pass_md5, $user_identity;
929 if ( '' == $for_user_id )
930 $user = wp_get_current_user();
932 $user = new WP_User($for_user_id);
934 $userdata = $user->data;
935 $user_ID = (int) $user->ID;
936 $user_level = (int) isset($user->user_level) ? $user->user_level : 0;
938 if ( 0 == $user->ID ) {
939 $user_login = $user_email = $user_url = $user_pass_md5 = $user_identity = '';
943 $user_login = $user->user_login;
944 $user_email = $user->user_email;
945 $user_url = $user->user_url;
946 $user_pass_md5 = md5($user->user_pass);
947 $user_identity = $user->display_name;
951 * Create dropdown HTML content of users.
953 * The content can either be displayed, which it is by default or retrieved by
954 * setting the 'echo' argument. The 'include' and 'exclude' arguments do not
955 * need to be used; all users will be displayed in that case. Only one can be
956 * used, either 'include' or 'exclude', but not both.
958 * The available arguments are as follows:
960 * <li>show_option_all - Text to show all and whether HTML option exists.</li>
961 * <li>show_option_none - Text for show none and whether HTML option exists.</li>
962 * <li>hide_if_only_one_author - Don't create the dropdown if there is only one user.</li>
963 * <li>orderby - SQL order by clause for what order the users appear. Default is 'display_name'.</li>
964 * <li>order - Default is 'ASC'. Can also be 'DESC'.</li>
965 * <li>include - User IDs to include.</li>
966 * <li>exclude - User IDs to exclude.</li>
967 * <li>multi - Default is 'false'. Whether to skip the ID attribute on the 'select' element. A 'true' value is overridden when id argument is set.</li>
968 * <li>show - Default is 'display_name'. User table column to display. If the selected item is empty then the user_login will be displayed in parentheses</li>
969 * <li>echo - Default is '1'. Whether to display or retrieve content.</li>
970 * <li>selected - Which User ID is selected.</li>
971 * <li>include_selected - Always include the selected user ID in the dropdown. Default is false.</li>
972 * <li>name - Default is 'user'. Name attribute of select element.</li>
973 * <li>id - Default is the value of the 'name' parameter. ID attribute of select element.</li>
974 * <li>class - Class attribute of select element.</li>
975 * <li>blog_id - ID of blog (Multisite only). Defaults to ID of current blog.</li>
976 * <li>who - Which users to query. Currently only 'authors' is supported. Default is all users.</li>
980 * @uses $wpdb WordPress database object for queries
982 * @param string|array $args Optional. Override defaults.
983 * @return string|null Null on display. String of HTML content on retrieve.
985 function wp_dropdown_users( $args = '' ) {
987 'show_option_all' => '', 'show_option_none' => '', 'hide_if_only_one_author' => '',
988 'orderby' => 'display_name', 'order' => 'ASC',
989 'include' => '', 'exclude' => '', 'multi' => 0,
990 'show' => 'display_name', 'echo' => 1,
991 'selected' => 0, 'name' => 'user', 'class' => '', 'id' => '',
992 'blog_id' => $GLOBALS['blog_id'], 'who' => '', 'include_selected' => false
995 $defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
997 $r = wp_parse_args( $args, $defaults );
998 extract( $r, EXTR_SKIP );
1000 $query_args = wp_array_slice_assoc( $r, array( 'blog_id', 'include', 'exclude', 'orderby', 'order', 'who' ) );
1001 $query_args['fields'] = array( 'ID', $show );
1002 $users = get_users( $query_args );
1005 if ( !empty($users) && ( empty($hide_if_only_one_author) || count($users) > 1 ) ) {
1006 $name = esc_attr( $name );
1007 if ( $multi && ! $id )
1010 $id = $id ? " id='" . esc_attr( $id ) . "'" : " id='$name'";
1012 $output = "<select name='{$name}'{$id} class='$class'>\n";
1014 if ( $show_option_all )
1015 $output .= "\t<option value='0'>$show_option_all</option>\n";
1017 if ( $show_option_none ) {
1018 $_selected = selected( -1, $selected, false );
1019 $output .= "\t<option value='-1'$_selected>$show_option_none</option>\n";
1022 $found_selected = false;
1023 foreach ( (array) $users as $user ) {
1024 $user->ID = (int) $user->ID;
1025 $_selected = selected( $user->ID, $selected, false );
1027 $found_selected = true;
1028 $display = !empty($user->$show) ? $user->$show : '('. $user->user_login . ')';
1029 $output .= "\t<option value='$user->ID'$_selected>" . esc_html($display) . "</option>\n";
1032 if ( $include_selected && ! $found_selected && ( $selected > 0 ) ) {
1033 $user = get_userdata( $selected );
1034 $_selected = selected( $user->ID, $selected, false );
1035 $display = !empty($user->$show) ? $user->$show : '('. $user->user_login . ')';
1036 $output .= "\t<option value='$user->ID'$_selected>" . esc_html($display) . "</option>\n";
1039 $output .= "</select>";
1042 $output = apply_filters('wp_dropdown_users', $output);
1051 * Sanitize user field based on context.
1053 * Possible context values are: 'raw', 'edit', 'db', 'display', 'attribute' and 'js'. The
1054 * 'display' context is used by default. 'attribute' and 'js' contexts are treated like 'display'
1055 * when calling filters.
1058 * @uses apply_filters() Calls 'edit_$field' and '{$field_no_prefix}_edit_pre' passing $value and
1059 * $user_id if $context == 'edit' and field name prefix == 'user_'.
1061 * @uses apply_filters() Calls 'edit_user_$field' passing $value and $user_id if $context == 'db'.
1062 * @uses apply_filters() Calls 'pre_$field' passing $value if $context == 'db' and field name prefix == 'user_'.
1063 * @uses apply_filters() Calls '{$field}_pre' passing $value if $context == 'db' and field name prefix != 'user_'.
1065 * @uses apply_filters() Calls '$field' passing $value, $user_id and $context if $context == anything
1066 * other than 'raw', 'edit' and 'db' and field name prefix == 'user_'.
1067 * @uses apply_filters() Calls 'user_$field' passing $value if $context == anything other than 'raw',
1068 * 'edit' and 'db' and field name prefix != 'user_'.
1070 * @param string $field The user Object field name.
1071 * @param mixed $value The user Object value.
1072 * @param int $user_id user ID.
1073 * @param string $context How to sanitize user fields. Looks for 'raw', 'edit', 'db', 'display',
1074 * 'attribute' and 'js'.
1075 * @return mixed Sanitized value.
1077 function sanitize_user_field($field, $value, $user_id, $context) {
1078 $int_fields = array('ID');
1079 if ( in_array($field, $int_fields) )
1080 $value = (int) $value;
1082 if ( 'raw' == $context )
1085 if ( !is_string($value) && !is_numeric($value) )
1089 if ( false !== strpos($field, 'user_') ) {
1091 $field_no_prefix = str_replace('user_', '', $field);
1094 if ( 'edit' == $context ) {
1096 $value = apply_filters("edit_{$field}", $value, $user_id);
1098 $value = apply_filters("edit_user_{$field}", $value, $user_id);
1101 if ( 'description' == $field )
1102 $value = esc_html( $value ); // textarea_escaped?
1104 $value = esc_attr($value);
1105 } else if ( 'db' == $context ) {
1107 $value = apply_filters("pre_{$field}", $value);
1109 $value = apply_filters("pre_user_{$field}", $value);
1112 // Use display filters by default.
1114 $value = apply_filters($field, $value, $user_id, $context);
1116 $value = apply_filters("user_{$field}", $value, $user_id, $context);
1119 if ( 'user_url' == $field )
1120 $value = esc_url($value);
1122 if ( 'attribute' == $context )
1123 $value = esc_attr($value);
1124 else if ( 'js' == $context )
1125 $value = esc_js($value);
1131 * Update all user caches
1135 * @param object $user User object to be cached
1137 function update_user_caches($user) {
1138 wp_cache_add($user->ID, $user, 'users');
1139 wp_cache_add($user->user_login, $user->ID, 'userlogins');
1140 wp_cache_add($user->user_email, $user->ID, 'useremail');
1141 wp_cache_add($user->user_nicename, $user->ID, 'userslugs');
1145 * Clean all user caches
1149 * @param int $id User ID
1151 function clean_user_cache($id) {
1152 $user = WP_User::get_data_by( 'id', $id );
1154 wp_cache_delete($id, 'users');
1155 wp_cache_delete($user->user_login, 'userlogins');
1156 wp_cache_delete($user->user_email, 'useremail');
1157 wp_cache_delete($user->user_nicename, 'userslugs');
1161 * Checks whether the given username exists.
1165 * @param string $username Username.
1166 * @return null|int The user's ID on success, and null on failure.
1168 function username_exists( $username ) {
1169 if ( $user = get_user_by('login', $username ) ) {
1177 * Checks whether the given email exists.
1182 * @param string $email Email.
1183 * @return bool|int The user's ID on success, and false on failure.
1185 function email_exists( $email ) {
1186 if ( $user = get_user_by('email', $email) )
1193 * Checks whether an username is valid.
1196 * @uses apply_filters() Calls 'validate_username' hook on $valid check and $username as parameters
1198 * @param string $username Username.
1199 * @return bool Whether username given is valid
1201 function validate_username( $username ) {
1202 $sanitized = sanitize_user( $username, true );
1203 $valid = ( $sanitized == $username );
1204 return apply_filters( 'validate_username', $valid, $username );
1208 * Insert an user into the database.
1210 * Can update a current user or insert a new user based on whether the user's ID
1213 * Can be used to update the user's info (see below), set the user's role, and
1214 * set the user's preference on whether they want the rich editor on.
1216 * Most of the $userdata array fields have filters associated with the values.
1217 * The exceptions are 'rich_editing', 'role', 'jabber', 'aim', 'yim',
1218 * 'user_registered', and 'ID'. The filters have the prefix 'pre_user_' followed
1219 * by the field name. An example using 'description' would have the filter
1220 * called, 'pre_user_description' that can be hooked into.
1222 * The $userdata array can contain the following fields:
1223 * 'ID' - An integer that will be used for updating an existing user.
1224 * 'user_pass' - A string that contains the plain text password for the user.
1225 * 'user_login' - A string that contains the user's username for logging in.
1226 * 'user_nicename' - A string that contains a nicer looking name for the user.
1227 * The default is the user's username.
1228 * 'user_url' - A string containing the user's URL for the user's web site.
1229 * 'user_email' - A string containing the user's email address.
1230 * 'display_name' - A string that will be shown on the site. Defaults to user's
1231 * username. It is likely that you will want to change this, for appearance.
1232 * 'nickname' - The user's nickname, defaults to the user's username.
1233 * 'first_name' - The user's first name.
1234 * 'last_name' - The user's last name.
1235 * 'description' - A string containing content about the user.
1236 * 'rich_editing' - A string for whether to enable the rich editor. False
1238 * 'user_registered' - The date the user registered. Format is 'Y-m-d H:i:s'.
1239 * 'role' - A string used to set the user's role.
1240 * 'jabber' - User's Jabber account.
1241 * 'aim' - User's AOL IM account.
1242 * 'yim' - User's Yahoo IM account.
1245 * @uses $wpdb WordPress database layer.
1246 * @uses apply_filters() Calls filters for most of the $userdata fields with the prefix 'pre_user'. See note above.
1247 * @uses do_action() Calls 'profile_update' hook when updating giving the user's ID
1248 * @uses do_action() Calls 'user_register' hook when creating a new user giving the user's ID
1250 * @param array $userdata An array of user data.
1251 * @return int|WP_Error The newly created user's ID or a WP_Error object if the user could not be created.
1253 function wp_insert_user($userdata) {
1256 extract($userdata, EXTR_SKIP);
1258 // Are we updating or creating?
1259 if ( !empty($ID) ) {
1262 $old_user_data = WP_User::get_data_by( 'id', $ID );
1265 // Hash the password
1266 $user_pass = wp_hash_password($user_pass);
1269 $user_login = sanitize_user($user_login, true);
1270 $user_login = apply_filters('pre_user_login', $user_login);
1272 //Remove any non-printable chars from the login string to see if we have ended up with an empty username
1273 $user_login = trim($user_login);
1275 if ( empty($user_login) )
1276 return new WP_Error('empty_user_login', __('Cannot create a user with an empty login name.') );
1278 if ( !$update && username_exists( $user_login ) )
1279 return new WP_Error('existing_user_login', __('This username is already registered.') );
1281 if ( empty($user_nicename) )
1282 $user_nicename = sanitize_title( $user_login );
1283 $user_nicename = apply_filters('pre_user_nicename', $user_nicename);
1285 if ( empty($user_url) )
1287 $user_url = apply_filters('pre_user_url', $user_url);
1289 if ( empty($user_email) )
1291 $user_email = apply_filters('pre_user_email', $user_email);
1293 if ( !$update && ! defined( 'WP_IMPORTING' ) && email_exists($user_email) )
1294 return new WP_Error('existing_user_email', __('This email address is already registered.') );
1296 if ( empty($display_name) )
1297 $display_name = $user_login;
1298 $display_name = apply_filters('pre_user_display_name', $display_name);
1300 if ( empty($nickname) )
1301 $nickname = $user_login;
1302 $nickname = apply_filters('pre_user_nickname', $nickname);
1304 if ( empty($first_name) )
1306 $first_name = apply_filters('pre_user_first_name', $first_name);
1308 if ( empty($last_name) )
1310 $last_name = apply_filters('pre_user_last_name', $last_name);
1312 if ( empty($description) )
1314 $description = apply_filters('pre_user_description', $description);
1316 if ( empty($rich_editing) )
1317 $rich_editing = 'true';
1319 if ( empty($comment_shortcuts) )
1320 $comment_shortcuts = 'false';
1322 if ( empty($admin_color) )
1323 $admin_color = 'fresh';
1324 $admin_color = preg_replace('|[^a-z0-9 _.\-@]|i', '', $admin_color);
1326 if ( empty($use_ssl) )
1329 if ( empty($user_registered) )
1330 $user_registered = gmdate('Y-m-d H:i:s');
1332 if ( empty($show_admin_bar_front) )
1333 $show_admin_bar_front = 'true';
1335 $user_nicename_check = $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->users WHERE user_nicename = %s AND user_login != %s LIMIT 1" , $user_nicename, $user_login));
1337 if ( $user_nicename_check ) {
1339 while ($user_nicename_check) {
1340 $alt_user_nicename = $user_nicename . "-$suffix";
1341 $user_nicename_check = $wpdb->get_var( $wpdb->prepare("SELECT ID FROM $wpdb->users WHERE user_nicename = %s AND user_login != %s LIMIT 1" , $alt_user_nicename, $user_login));
1344 $user_nicename = $alt_user_nicename;
1347 $data = compact( 'user_pass', 'user_email', 'user_url', 'user_nicename', 'display_name', 'user_registered' );
1348 $data = stripslashes_deep( $data );
1351 $wpdb->update( $wpdb->users, $data, compact( 'ID' ) );
1352 $user_id = (int) $ID;
1354 $wpdb->insert( $wpdb->users, $data + compact( 'user_login' ) );
1355 $user_id = (int) $wpdb->insert_id;
1358 $user = new WP_User( $user_id );
1360 foreach ( _get_additional_user_keys( $user ) as $key ) {
1361 if ( isset( $$key ) )
1362 update_user_meta( $user_id, $key, $$key );
1366 $user->set_role($role);
1368 $user->set_role(get_option('default_role'));
1370 wp_cache_delete($user_id, 'users');
1371 wp_cache_delete($user_login, 'userlogins');
1374 do_action('profile_update', $user_id, $old_user_data);
1376 do_action('user_register', $user_id);
1382 * Update an user in the database.
1384 * It is possible to update a user's password by specifying the 'user_pass'
1385 * value in the $userdata parameter array.
1387 * If $userdata does not contain an 'ID' key, then a new user will be created
1388 * and the new user's ID will be returned.
1390 * If current user's password is being updated, then the cookies will be
1394 * @see wp_insert_user() For what fields can be set in $userdata
1395 * @uses wp_insert_user() Used to update existing user or add new one if user doesn't exist already
1397 * @param array $userdata An array of user data.
1398 * @return int The updated user's ID.
1400 function wp_update_user($userdata) {
1401 $ID = (int) $userdata['ID'];
1403 // First, get all of the original fields
1404 $user_obj = get_userdata( $ID );
1406 $user = get_object_vars( $user_obj->data );
1408 // Add additional custom fields
1409 foreach ( _get_additional_user_keys( $user_obj ) as $key ) {
1410 $user[ $key ] = get_user_meta( $ID, $key, true );
1413 // Escape data pulled from DB.
1414 $user = add_magic_quotes( $user );
1416 // If password is changing, hash it now.
1417 if ( ! empty($userdata['user_pass']) ) {
1418 $plaintext_pass = $userdata['user_pass'];
1419 $userdata['user_pass'] = wp_hash_password($userdata['user_pass']);
1422 wp_cache_delete($user[ 'user_email' ], 'useremail');
1424 // Merge old and new fields with new fields overwriting old ones.
1425 $userdata = array_merge($user, $userdata);
1426 $user_id = wp_insert_user($userdata);
1428 // Update the cookies if the password changed.
1429 $current_user = wp_get_current_user();
1430 if ( $current_user->ID == $ID ) {
1431 if ( isset($plaintext_pass) ) {
1432 wp_clear_auth_cookie();
1433 wp_set_auth_cookie($ID);
1441 * A simpler way of inserting an user into the database.
1443 * Creates a new user with just the username, password, and email. For more
1444 * complex user creation use wp_insert_user() to specify more information.
1447 * @see wp_insert_user() More complete way to create a new user
1449 * @param string $username The user's username.
1450 * @param string $password The user's password.
1451 * @param string $email The user's email (optional).
1452 * @return int The new user's ID.
1454 function wp_create_user($username, $password, $email = '') {
1455 $user_login = esc_sql( $username );
1456 $user_email = esc_sql( $email );
1457 $user_pass = $password;
1459 $userdata = compact('user_login', 'user_email', 'user_pass');
1460 return wp_insert_user($userdata);
1465 * Return a list of meta keys that wp_insert_user() is supposed to set.
1470 * @param object $user WP_User instance
1473 function _get_additional_user_keys( $user ) {
1474 $keys = array( 'first_name', 'last_name', 'nickname', 'description', 'rich_editing', 'comment_shortcuts', 'admin_color', 'use_ssl', 'show_admin_bar_front' );
1475 return array_merge( $keys, array_keys( _wp_get_user_contactmethods( $user ) ) );
1479 * Set up the default contact methods
1484 * @param object $user User data object (optional)
1485 * @return array $user_contactmethods Array of contact methods and their labels.
1487 function _wp_get_user_contactmethods( $user = null ) {
1488 $user_contactmethods = array(
1490 'yim' => __('Yahoo IM'),
1491 'jabber' => __('Jabber / Google Talk')
1493 return apply_filters( 'user_contactmethods', $user_contactmethods, $user );