get_error_codes() == array('empty_username', 'empty_password') ) {
$user = new WP_Error('', '');
}
return $user;
}
wp_set_auth_cookie($user->ID, $credentials['remember'], $secure_cookie);
do_action('wp_login', $credentials['user_login']);
return $user;
}
/**
* Authenticate the user using the username and password.
*/
add_filter('authenticate', 'wp_authenticate_username_password', 20, 3);
function wp_authenticate_username_password($user, $username, $password) {
if ( is_a($user, 'WP_User') ) { return $user; }
if ( empty($username) || empty($password) ) {
$error = new WP_Error();
if ( empty($username) )
$error->add('empty_username', __('ERROR: The username field is empty.'));
if ( empty($password) )
$error->add('empty_password', __('ERROR: The password field is empty.'));
return $error;
}
$userdata = get_user_by('login', $username);
if ( !$userdata )
return new WP_Error('invalid_username', sprintf(__('ERROR: Invalid username. Lost your password?'), site_url('wp-login.php?action=lostpassword', 'login')));
if ( is_multisite() ) {
// Is user marked as spam?
if ( 1 == $userdata->spam)
return new WP_Error('invalid_username', __('ERROR: Your account has been marked as a spammer.'));
// Is a user's blog marked as spam?
if ( !is_super_admin( $userdata->ID ) && isset($userdata->primary_blog) ) {
$details = get_blog_details( $userdata->primary_blog );
if ( is_object( $details ) && $details->spam == 1 )
return new WP_Error('blog_suspended', __('Site Suspended.'));
}
}
$userdata = apply_filters('wp_authenticate_user', $userdata, $password);
if ( is_wp_error($userdata) )
return $userdata;
if ( !wp_check_password($password, $userdata->user_pass, $userdata->ID) )
return new WP_Error('incorrect_password', sprintf(__('ERROR: Incorrect password. Lost your password?'), site_url('wp-login.php?action=lostpassword', 'login')));
$user = new WP_User($userdata->ID);
return $user;
}
/**
* Authenticate the user using the WordPress auth cookie.
*/
function wp_authenticate_cookie($user, $username, $password) {
if ( is_a($user, 'WP_User') ) { return $user; }
if ( empty($username) && empty($password) ) {
$user_id = wp_validate_auth_cookie();
if ( $user_id )
return new WP_User($user_id);
global $auth_secure_cookie;
if ( $auth_secure_cookie )
$auth_cookie = SECURE_AUTH_COOKIE;
else
$auth_cookie = AUTH_COOKIE;
if ( !empty($_COOKIE[$auth_cookie]) )
return new WP_Error('expired_session', __('Please log in again.'));
// If the cookie is not set, be silent.
}
return $user;
}
/**
* Number of posts user has written.
*
* @since 3.0.0
* @uses $wpdb WordPress database object for queries.
*
* @param int $userid User ID.
* @return int Amount of posts user has written.
*/
function count_user_posts($userid) {
global $wpdb;
$where = get_posts_by_author_sql('post', TRUE, $userid);
$count = $wpdb->get_var( "SELECT COUNT(*) FROM $wpdb->posts $where" );
return apply_filters('get_usernumposts', $count, $userid);
}
/**
* Number of posts written by a list of users.
*
* @since 3.0.0
* @param array $users User ID number list.
* @return array Amount of posts each user has written.
*/
function count_many_users_posts($users) {
global $wpdb;
$count = array();
if ( ! is_array($users) || empty( $users ) )
return $count;
$userlist = implode( ',', $users );
$where = get_posts_by_author_sql( 'post' );
$result = $wpdb->get_results( "SELECT post_author, COUNT(*) FROM $wpdb->posts $where AND post_author IN ($userlist) GROUP BY post_author", ARRAY_N );
foreach ( $result as $row ) {
$count[ $row[0] ] = $row[1];
}
foreach ( $users as $id ) {
if ( ! isset( $count[ $id ] ) )
$count[ $id ] = 0;
}
return $count;
}
/**
* Check that the user login name and password is correct.
*
* @since 0.71
* @todo xmlrpc only. Maybe move to xmlrpc.php.
*
* @param string $user_login User name.
* @param string $user_pass User password.
* @return bool False if does not authenticate, true if username and password authenticates.
*/
function user_pass_ok($user_login, $user_pass) {
$user = wp_authenticate($user_login, $user_pass);
if ( is_wp_error($user) )
return false;
return true;
}
//
// User option functions
//
/**
* Get the current user's ID
*
* @since MU
*
* @uses wp_get_current_user
*
* @return int The current user's ID
*/
function get_current_user_id() {
$user = wp_get_current_user();
return ( isset( $user->ID ) ? (int) $user->ID : 0 );
}
/**
* Retrieve user option that can be either per Site or per Network.
*
* If the user ID is not given, then the current user will be used instead. If
* the user ID is given, then the user data will be retrieved. The filter for
* the result, will also pass the original option name and finally the user data
* object as the third parameter.
*
* The option will first check for the per site name and then the per Network name.
*
* @since 2.0.0
* @uses $wpdb WordPress database object for queries.
* @uses apply_filters() Calls 'get_user_option_$option' hook with result,
* option parameter, and user data object.
*
* @param string $option User option name.
* @param int $user Optional. User ID.
* @param bool $deprecated Use get_option() to check for an option in the options table.
* @return mixed
*/
function get_user_option( $option, $user = 0, $deprecated = '' ) {
global $wpdb;
if ( !empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, '3.0' );
if ( empty($user) ) {
$user = wp_get_current_user();
$user = $user->ID;
}
$user = get_userdata($user);
// Keys used as object vars cannot have dashes.
$key = str_replace('-', '', $option);
if ( isset( $user->{$wpdb->prefix . $key} ) ) // Blog specific
$result = $user->{$wpdb->prefix . $key};
elseif ( isset( $user->{$key} ) ) // User specific and cross-blog
$result = $user->{$key};
else
$result = false;
return apply_filters("get_user_option_{$option}", $result, $option, $user);
}
/**
* Update user option with global blog capability.
*
* User options are just like user metadata except that they have support for
* global blog options. If the 'global' parameter is false, which it is by default
* it will prepend the WordPress table prefix to the option name.
*
* Deletes the user option if $newvalue is empty.
*
* @since 2.0.0
* @uses $wpdb WordPress database object for queries
*
* @param int $user_id User ID
* @param string $option_name User option name.
* @param mixed $newvalue User option value.
* @param bool $global Optional. Whether option name is global or blog specific. Default false (blog specific).
* @return unknown
*/
function update_user_option( $user_id, $option_name, $newvalue, $global = false ) {
global $wpdb;
if ( !$global )
$option_name = $wpdb->prefix . $option_name;
// For backward compatibility. See differences between update_user_meta() and deprecated update_usermeta().
// http://core.trac.wordpress.org/ticket/13088
if ( is_null( $newvalue ) || is_scalar( $newvalue ) && empty( $newvalue ) )
return delete_user_meta( $user_id, $option_name );
return update_user_meta( $user_id, $option_name, $newvalue );
}
/**
* Delete user option with global blog capability.
*
* User options are just like user metadata except that they have support for
* global blog options. If the 'global' parameter is false, which it is by default
* it will prepend the WordPress table prefix to the option name.
*
* @since 3.0.0
* @uses $wpdb WordPress database object for queries
*
* @param int $user_id User ID
* @param string $option_name User option name.
* @param bool $global Optional. Whether option name is global or blog specific. Default false (blog specific).
* @return unknown
*/
function delete_user_option( $user_id, $option_name, $global = false ) {
global $wpdb;
if ( !$global )
$option_name = $wpdb->prefix . $option_name;
return delete_user_meta( $user_id, $option_name );
}
/**
* WordPress User Query class.
*
* @since 3.1.0
*/
class WP_User_Query {
/**
* List of found user ids
*
* @since 3.1.0
* @access private
* @var array
*/
var $results;
/**
* Total number of found users for the current query
*
* @since 3.1.0
* @access private
* @var int
*/
var $total_users = 0;
// SQL pieces
var $query_from;
var $query_where;
var $query_orderby;
var $query_limit;
/**
* PHP4 constructor
*/
function WP_User_Query( $query = null ) {
$this->__construct( $query );
}
/**
* PHP5 constructor
*
* @since 3.1.0
*
* @param string|array $args The query variables
* @return WP_User_Query
*/
function __construct( $query = null ) {
if ( !empty( $query ) ) {
$this->query_vars = wp_parse_args( $query, array(
'role' => '', 'blog_id' => $GLOBALS['blog_id'],
'meta_key' => '', 'meta_value' => '', 'meta_compare' => '',
'include' => array(), 'exclude' => array(),
'search' => '',
'orderby' => 'login', 'order' => 'ASC',
'offset' => '', 'number' => '', 'count_total' => true,
'fields' => 'all',
) );
$this->prepare_query();
$this->query();
}
}
/**
* Prepare the query variables
*
* @since 3.1.0
* @access private
*/
function prepare_query() {
global $wpdb;
$qv = &$this->query_vars;
$this->query_from = " FROM $wpdb->users";
$this->query_where = " WHERE 1=1";
// sorting
if ( in_array( $qv['orderby'], array('email', 'url', 'registered') ) ) {
$orderby = 'user_' . $qv['orderby'];
}
elseif ( 'name' == $qv['orderby'] ) {
$orderby = 'display_name';
}
elseif ( 'post_count' == $qv['orderby'] ) {
$where = get_posts_by_author_sql('post');
$this->query_from .= " LEFT OUTER JOIN (
SELECT post_author, COUNT(*) as post_count
FROM wp_posts
$where
GROUP BY post_author
) p ON ({$wpdb->users}.ID = p.post_author)
";
$orderby = 'post_count';
}
else {
$orderby = 'user_login';
}
$qv['order'] = strtoupper( $qv['order'] );
if ( 'ASC' == $qv['order'] )
$order = 'ASC';
else
$order = 'DESC';
$this->query_orderby = " ORDER BY $orderby $order";
// limit
if ( $qv['number'] ) {
if ( $qv['offset'] )
$this->query_limit = $wpdb->prepare(" LIMIT %d, %d", $qv['offset'], $qv['offset'] + $qv['number']);
else
$this->query_limit = $wpdb->prepare(" LIMIT %d", $qv['number']);
}
$search = trim( $qv['search'] );
if ( $search ) {
$this->query_where .= _wp_search_sql( $search, array('user_login', 'user_nicename', 'user_email', 'user_url', 'display_name') );
}
$role = trim( $qv['role'] );
$blog_id = absint( $qv['blog_id'] );
$meta_queries = array();
if ( $blog_id ) {
$cap_meta_query = array();
$cap_meta_query['key'] = $wpdb->get_blog_prefix( $blog_id ) . 'capabilities';
if ( $role ) {
$cap_meta_query['value'] = $role;
$cap_meta_query['compare'] = 'like';
}
$meta_queries[] = $cap_meta_query;
}
$meta_query = array();
foreach ( array( 'key', 'value', 'compare' ) as $key ) {
if ( !empty( $qv[ "meta_$key" ] ) )
$meta_query[ $key ] = $qv[ "meta_$key" ];
}
if ( !empty( $meta_query ) ) {
$meta_queries[] = $meta_query;
}
list( $meta_join, $meta_where ) = _wp_meta_sql( $meta_queries, $wpdb->users, 'ID', $wpdb->usermeta, 'user_id' );
$this->query_from .= $meta_join;
$this->query_where .= $meta_where;
if ( !empty($qv['include']) ) {
$ids = implode( ',', wp_parse_id_list( $qv['include'] ) );
$this->query_where .= " AND $wpdb->users.ID IN ($ids)";
}
elseif ( !empty($qv['exclude']) ) {
$ids = implode( ',', wp_parse_id_list( $qv['exclude'] ) );
$this->query_where .= " AND $wpdb->users.ID NOT IN ($ids)";
}
do_action_ref_array( 'pre_user_query', array( &$this ) );
}
/**
* Execute the query, with the current variables
*
* @since 3.1.0
* @access private
*/
function query() {
global $wpdb;
$this->results = $wpdb->get_col("SELECT $wpdb->users.ID" . $this->query_from . $this->query_where . $this->query_orderby . $this->query_limit);
if ( !$this->results )
return;
if ( $this->query_vars['count_total'] )
$this->total_users = $wpdb->get_var("SELECT COUNT($wpdb->users.ID)" . $this->query_from . $this->query_where);
if ( 'all' == $this->query_vars['fields'] ) {
cache_users($this->results);
$r = array();
foreach ( $this->results as $userid )
$r[ $userid ] = new WP_User( $userid, '', $this->query_vars['blog_id'] );
$this->results = $r;
}
}
/**
* Return the list of users
*
* @since 3.1.0
* @access public
*
* @return array
*/
function get_results() {
return $this->results;
}
/**
* Return the total number of users for the current query
*
* @since 3.1.0
* @access public
*
* @return array
*/
function get_total() {
return $this->total_users;
}
}
/**
* Retrieve list of users matching criteria.
*
* @since 3.1.0
* @uses $wpdb
* @uses WP_User_Query See for default arguments and information.
*
* @param array $args
* @return array List of users.
*/
function get_users( $args ) {
$args = wp_parse_args( $args );
$args['count_total'] = false;
$user_search = new WP_User_Query($args);
return (array) $user_search->get_results();
}
/**
* Get users for the blog.
*
* For setups that use the multi-blog feature. Can be used outside of the
* multi-blog feature.
*
* @since 2.2.0
* @uses get_users() for queries
* @uses $blog_id The Blog id of the blog for those that use more than one blog
*
* @param int $id Blog ID.
* @return array List of users that are part of that Blog ID
*/
function get_users_of_blog( $id = '' ) {
global $blog_id;
if ( empty($id) )
$id = (int) $blog_id;
return get_users( array( 'blog_id' => $id ) );
}
/**
* Get the blogs a user belong to.
*
* $since 3.0.0
*
* @param int $id User Id
* @param bool $all Whether to retrieve all blog details or an abbreviated set of details. Default is abbreviated.
* @return array A list of the user's blogs.
*/
function get_blogs_of_user( $id, $all = false ) {
global $wpdb;
if ( !is_multisite() ) {
global $blog_id;
$blogs = array();
$blogs[ $blog_id ]->userblog_id = $blog_id;
$blogs[ $blog_id ]->blogname = get_option('blogname');
$blogs[ $blog_id ]->domain = '';
$blogs[ $blog_id ]->path = '';
$blogs[ $blog_id ]->site_id = 1;
$blogs[ $blog_id ]->siteurl = get_option('siteurl');
return $blogs;
}
$cache_suffix = $all ? '_all' : '_short';
$return = wp_cache_get( 'blogs_of_user_' . $id . $cache_suffix, 'users' );
if ( $return )
return apply_filters( 'get_blogs_of_user', $return, $id, $all );
$user = get_userdata( (int) $id );
if ( !$user )
return false;
$blogs = $match = array();
$prefix_length = strlen($wpdb->base_prefix);
foreach ( (array) $user as $key => $value ) {
if ( $prefix_length && substr($key, 0, $prefix_length) != $wpdb->base_prefix )
continue;
if ( substr($key, -12, 12) != 'capabilities' )
continue;
if ( preg_match( '/^' . $wpdb->base_prefix . '((\d+)_)?capabilities$/', $key, $match ) ) {
if ( count( $match ) > 2 )
$blog_id = $match[ 2 ];
else
$blog_id = 1;
$blog = get_blog_details( $blog_id );
if ( $blog && isset( $blog->domain ) && ( $all == true || $all == false && ( $blog->archived == 0 && $blog->spam == 0 && $blog->deleted == 0 ) ) ) {
$blogs[ $blog_id ]->userblog_id = $blog_id;
$blogs[ $blog_id ]->blogname = $blog->blogname;
$blogs[ $blog_id ]->domain = $blog->domain;
$blogs[ $blog_id ]->path = $blog->path;
$blogs[ $blog_id ]->site_id = $blog->site_id;
$blogs[ $blog_id ]->siteurl = $blog->siteurl;
}
}
}
wp_cache_add( 'blogs_of_user_' . $id . $cache_suffix, $blogs, 'users', 5 );
return apply_filters( 'get_blogs_of_user', $blogs, $id, $all );
}
function get_ordered_blogs_of_user( $user_id, $visibility = true ) {
$newblogs = $ordered = array();
$blogs = get_blogs_of_user( $user_id );
$order_meta = get_user_meta( $user_id, 'blog_order' );
$visible_meta = get_user_meta( $user_id, 'blog_visibility' );
$order = $order_meta;
if ( !is_array( $order ) )
$order = array();
$visible = $visible_meta;
if ( !is_array( $visible ) )
$visible = array();
// Index the blogs by userblog_id and set the visibility flag
// Visibility is on by default, unless a linked site then off
foreach ( $blogs as $blog ) {
$blog->visible = true;
if ( isset( $visible[$blog->userblog_id] ) )
$blog->visible = $visible[$blog->userblog_id];
$newblogs[$blog->userblog_id] = $blog;
}
// Add the blogs to our list by order
foreach ( (array)$order as $id ) {
// A previous change was saving the entire blog details into ordered, not just the blog ID - this detects it
if ( is_object( $id ) && isset( $id->userblog_id ) )
$id = $id->userblog_id;
if ( is_numeric( $id ) && isset( $newblogs[intval( $id )] ) ) {
$ordered[$id] = $newblogs[$id];
unset( $newblogs[$id] );
}
}
// Add any blog not yet ordered to the end
foreach ( $newblogs as $blog ) {
$ordered[$blog->userblog_id] = $blog;
}
// If we're only interested in visible blogs then remove the rest
if ( $visibility ) {
foreach ( (array)$ordered as $pos => $blog ) {
if ( $blog->visible == false )
unset( $ordered[$pos] );
}
}
/*
// Set the order and visible options if the user doesn't have any,
// but rate limit it so that the global DB doesn't get hammered
if ( !is_array( $order_meta ) && ( 1 == mt_rand( 1, 10 ) ) )
update_usermeta( $user_id, 'blog_order', array() );
if ( !is_array( $visible_meta ) && ( 1 == mt_rand( 1, 10 ) ) )
update_usermeta( $user_id, 'blog_visibility', array() );
*/
return apply_filters( 'ordered_blogs', $ordered );
}
function set_blog_visibility( $blog_id, $visible ) {
global $current_user;
if ( is_blog_user( $blog_id ) ) {
$visibility = get_user_meta( $current_user->ID, 'blog_visibility' );
if ( !is_array( $visibility ) )
$visibility = array();
$visibility[$blog_id] = $visible;
update_user_meta( $current_user->ID, 'blog_visibility', $visibility );
}
}
/**
* Checks if the current user belong to a given blog.
*
* @since 3.0.0
*
* @param int $blog_id Blog ID
* @return bool True if the current users belong to $blog_id, false if not.
*/
function is_blog_user( $blog_id = 0 ) {
global $wpdb;
$current_user = wp_get_current_user();
if ( !$blog_id )
$blog_id = $wpdb->blogid;
$cap_key = $wpdb->base_prefix . $blog_id . '_capabilities';
if ( is_array($current_user->$cap_key) && in_array(1, $current_user->$cap_key) )
return true;
return false;
}
/**
* Add meta data field to a user.
*
* Post meta data is called "Custom Fields" on the Administration Panels.
*
* @since 3.0.0
* @uses add_metadata()
* @link http://codex.wordpress.org/Function_Reference/add_user_meta
*
* @param int $user_id Post ID.
* @param string $meta_key Metadata name.
* @param mixed $meta_value Metadata value.
* @param bool $unique Optional, default is false. Whether the same key should not be added.
* @return bool False for failure. True for success.
*/
function add_user_meta($user_id, $meta_key, $meta_value, $unique = false) {
return add_metadata('user', $user_id, $meta_key, $meta_value, $unique);
}
/**
* Remove metadata matching criteria from a user.
*
* You can match based on the key, or key and value. Removing based on key and
* value, will keep from removing duplicate metadata with the same key. It also
* allows removing all metadata matching key, if needed.
*
* @since 3.0.0
* @uses delete_metadata()
* @link http://codex.wordpress.org/Function_Reference/delete_user_meta
*
* @param int $user_id user ID
* @param string $meta_key Metadata name.
* @param mixed $meta_value Optional. Metadata value.
* @return bool False for failure. True for success.
*/
function delete_user_meta($user_id, $meta_key, $meta_value = '') {
return delete_metadata('user', $user_id, $meta_key, $meta_value);
}
/**
* Retrieve user meta field for a user.
*
* @since 3.0.0
* @uses get_metadata()
* @link http://codex.wordpress.org/Function_Reference/get_user_meta
*
* @param int $user_id Post ID.
* @param string $key The meta key to retrieve.
* @param bool $single Whether to return a single value.
* @return mixed Will be an array if $single is false. Will be value of meta data field if $single
* is true.
*/
function get_user_meta($user_id, $key, $single = false) {
return get_metadata('user', $user_id, $key, $single);
}
/**
* Update user meta field based on user ID.
*
* Use the $prev_value parameter to differentiate between meta fields with the
* same key and user ID.
*
* If the meta field for the user does not exist, it will be added.
*
* @since 3.0.0
* @uses update_metadata
* @link http://codex.wordpress.org/Function_Reference/update_user_meta
*
* @param int $user_id Post ID.
* @param string $meta_key Metadata key.
* @param mixed $meta_value Metadata value.
* @param mixed $prev_value Optional. Previous value to check before removing.
* @return bool False on failure, true if success.
*/
function update_user_meta($user_id, $meta_key, $meta_value, $prev_value = '') {
return update_metadata('user', $user_id, $meta_key, $meta_value, $prev_value);
}
/**
* Count number of users who have each of the user roles.
*
* Assumes there are neither duplicated nor orphaned capabilities meta_values.
* Assumes role names are unique phrases. Same assumption made by WP_User_Query::prepare_query()
* Using $strategy = 'time' this is CPU-intensive and should handle around 10^7 users.
* Using $strategy = 'memory' this is memory-intensive and should handle around 10^5 users, but see WP Bug #12257.
*
* @since 3.0.0
* @param string $strategy 'time' or 'memory'
* @return array Includes a grand total and an array of counts indexed by role strings.
*/
function count_users($strategy = 'time') {
global $wpdb, $blog_id, $wp_roles;
// Initialize
$id = (int) $blog_id;
$blog_prefix = $wpdb->get_blog_prefix($id);
$result = array();
if ( 'time' == $strategy ) {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new WP_Roles();
$avail_roles = $wp_roles->get_names();
// Build a CPU-intensive query that will return concise information.
$select_count = array();
foreach ( $avail_roles as $this_role => $name ) {
$select_count[] = "COUNT(NULLIF(`meta_value` LIKE '%" . like_escape($this_role) . "%', FALSE))";
}
$select_count = implode(', ', $select_count);
// Add the meta_value index to the selection list, then run the query.
$row = $wpdb->get_row( "SELECT $select_count, COUNT(*) FROM $wpdb->usermeta WHERE meta_key = '{$blog_prefix}capabilities'", ARRAY_N );
// Run the previous loop again to associate results with role names.
$col = 0;
$role_counts = array();
foreach ( $avail_roles as $this_role => $name ) {
$count = (int) $row[$col++];
if ($count > 0) {
$role_counts[$this_role] = $count;
}
}
// Get the meta_value index from the end of the result set.
$total_users = (int) $row[$col];
$result['total_users'] = $total_users;
$result['avail_roles'] =& $role_counts;
} else {
$avail_roles = array();
$users_of_blog = $wpdb->get_col( "SELECT meta_value FROM $wpdb->usermeta WHERE meta_key = '{$blog_prefix}capabilities'" );
foreach ( $users_of_blog as $caps_meta ) {
$b_roles = unserialize($caps_meta);
if ( is_array($b_roles) ) {
foreach ( $b_roles as $b_role => $val ) {
if ( isset($avail_roles[$b_role]) ) {
$avail_roles[$b_role]++;
} else {
$avail_roles[$b_role] = 1;
}
}
}
}
$result['total_users'] = count( $users_of_blog );
$result['avail_roles'] =& $avail_roles;
}
return $result;
}
//
// Private helper functions
//
/**
* Set up global user vars.
*
* Used by wp_set_current_user() for back compat. Might be deprecated in the future.
*
* @since 2.0.4
* @global string $userdata User description.
* @global string $user_login The user username for logging in
* @global int $user_level The level of the user
* @global int $user_ID The ID of the user
* @global string $user_email The email address of the user
* @global string $user_url The url in the user's profile
* @global string $user_pass_md5 MD5 of the user's password
* @global string $user_identity The display name of the user
*
* @param int $for_user_id Optional. User ID to set up global data.
*/
function setup_userdata($for_user_id = '') {
global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_pass_md5, $user_identity;
if ( '' == $for_user_id )
$user = wp_get_current_user();
else
$user = new WP_User($for_user_id);
$userdata = $user->data;
$user_ID = (int) $user->ID;
$user_level = (int) isset($user->user_level) ? $user->user_level : 0;
if ( 0 == $user->ID ) {
$user_login = $user_email = $user_url = $user_pass_md5 = $user_identity = '';
return;
}
$user_login = $user->user_login;
$user_email = $user->user_email;
$user_url = $user->user_url;
$user_pass_md5 = md5($user->user_pass);
$user_identity = $user->display_name;
}
/**
* Create dropdown HTML content of users.
*
* The content can either be displayed, which it is by default or retrieved by
* setting the 'echo' argument. The 'include' and 'exclude' arguments do not
* need to be used; all users will be displayed in that case. Only one can be
* used, either 'include' or 'exclude', but not both.
*
* The available arguments are as follows:
*
*
show_option_all - Text to show all and whether HTML option exists.
*
show_option_none - Text for show none and whether HTML option exists.
*
*
orderby - SQL order by clause for what order the users appear. Default is
* 'display_name'.
*
order - Default is 'ASC'. Can also be 'DESC'.
*
include - User IDs to include.
*
exclude - User IDs to exclude.
*
multi - Default is 'false'. Whether to skip the ID attribute on the 'select' element. A 'true' value is overridden when id argument is set.
*
show - Default is 'display_name'. User table column to display. If the selected item is empty then the user_login will be displayed in parentesis
*
echo - Default is '1'. Whether to display or retrieve content.
*
selected - Which User ID is selected.
*
name - Default is 'user'. Name attribute of select element.
*
id - Default is the value of the 'name' parameter. ID attribute of select element.
*
class - Class attribute of select element.
*
blog_id - ID of blog (Multisite only). Defaults to ID of current blog.
*
*
* @since 2.3.0
* @uses $wpdb WordPress database object for queries
*
* @param string|array $args Optional. Override defaults.
* @return string|null Null on display. String of HTML content on retrieve.
*/
function wp_dropdown_users( $args = '' ) {
global $wpdb;
$defaults = array(
'show_option_all' => '', 'show_option_none' => '',
'orderby' => 'display_name', 'order' => 'ASC',
'include' => '', 'exclude' => '', 'multi' => 0,
'show' => 'display_name', 'echo' => 1,
'selected' => 0, 'name' => 'user', 'class' => '', 'blog_id' => $GLOBALS['blog_id'],
'id' => '',
);
$defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
$r = wp_parse_args( $args, $defaults );
extract( $r, EXTR_SKIP );
$users = get_users( wp_array_slice_assoc( $args, array( 'blog_id', 'include', 'exclude', 'orderby', 'order' ) ) );
$output = '';
if ( !empty($users) ) {
$name = esc_attr( $name );
if ( $multi && ! $id )
$id = '';
else
$id = $id ? " id='" . esc_attr( $id ) . "'" : " id='$name'";
$output = "";
}
$output = apply_filters('wp_dropdown_users', $output);
if ( $echo )
echo $output;
return $output;
}
/**
* Add user meta data as properties to given user object.
*
* The finished user data is cached, but the cache is not used to fill in the
* user data for the given object. Once the function has been used, the cache
* should be used to retrieve user data. The intention is if the current data
* had been cached already, there would be no need to call this function.
*
* @access private
* @since 2.5.0
* @uses $wpdb WordPress database object for queries
*
* @param object $user The user data object.
*/
function _fill_user( &$user ) {
$metavalues = get_user_metavalues(array($user->ID));
_fill_single_user($user, $metavalues[$user->ID]);
}
/**
* Perform the query to get the $metavalues array(s) needed by _fill_user and _fill_many_users
*
* @since 3.0.0
* @param array $ids User ID numbers list.
* @return array of arrays. The array is indexed by user_id, containing $metavalues object arrays.
*/
function get_user_metavalues($ids) {
$objects = array();
$ids = array_map('intval', $ids);
foreach ( $ids as $id )
$objects[$id] = array();
update_meta_cache('user', $ids);
foreach ( $ids as $id ) {
$meta = get_metadata('user', $id);
foreach ( $meta as $key => $metavalues ) {
foreach ( $metavalues as $value ) {
$objects[$id][] = (object)array( 'user_id' => $id, 'meta_key' => $key, 'meta_value' => $value);
}
}
}
return $objects;
}
/**
* Unserialize user metadata, fill $user object, then cache everything.
*
* @since 3.0.0
* @param object $user The User object.
* @param array $metavalues An array of objects provided by get_user_metavalues()
*/
function _fill_single_user( &$user, &$metavalues ) {
global $wpdb;
foreach ( $metavalues as $meta ) {
$value = maybe_unserialize($meta->meta_value);
// Keys used as object vars cannot have dashes.
$key = str_replace('-', '', $meta->meta_key);
$user->{$key} = $value;
}
$level = $wpdb->prefix . 'user_level';
if ( isset( $user->{$level} ) )
$user->user_level = $user->{$level};
// For backwards compat.
if ( isset($user->first_name) )
$user->user_firstname = $user->first_name;
if ( isset($user->last_name) )
$user->user_lastname = $user->last_name;
if ( isset($user->description) )
$user->user_description = $user->description;
update_user_caches($user);
}
/**
* Take an array of user objects, fill them with metas, and cache them.
*
* @since 3.0.0
* @param array $users User objects
*/
function _fill_many_users( &$users ) {
$ids = array();
foreach( $users as $user_object ) {
$ids[] = $user_object->ID;
}
$metas = get_user_metavalues($ids);
foreach ( $users as $user_object ) {
if ( isset($metas[$user_object->ID]) ) {
_fill_single_user($user_object, $metas[$user_object->ID]);
}
}
}
/**
* Sanitize every user field.
*
* If the context is 'raw', then the user object or array will get minimal santization of the int fields.
*
* @since 2.3.0
* @uses sanitize_user_field() Used to sanitize the fields.
*
* @param object|array $user The User Object or Array
* @param string $context Optional, default is 'display'. How to sanitize user fields.
* @return object|array The now sanitized User Object or Array (will be the same type as $user)
*/
function sanitize_user_object($user, $context = 'display') {
if ( is_object($user) ) {
if ( !isset($user->ID) )
$user->ID = 0;
if ( isset($user->data) )
$vars = get_object_vars( $user->data );
else
$vars = get_object_vars($user);
foreach ( array_keys($vars) as $field ) {
if ( is_string($user->$field) || is_numeric($user->$field) )
$user->$field = sanitize_user_field($field, $user->$field, $user->ID, $context);
}
$user->filter = $context;
} else {
if ( !isset($user['ID']) )
$user['ID'] = 0;
foreach ( array_keys($user) as $field )
$user[$field] = sanitize_user_field($field, $user[$field], $user['ID'], $context);
$user['filter'] = $context;
}
return $user;
}
/**
* Sanitize user field based on context.
*
* Possible context values are: 'raw', 'edit', 'db', 'display', 'attribute' and 'js'. The
* 'display' context is used by default. 'attribute' and 'js' contexts are treated like 'display'
* when calling filters.
*
* @since 2.3.0
* @uses apply_filters() Calls 'edit_$field' and '${field_no_prefix}_edit_pre' passing $value and
* $user_id if $context == 'edit' and field name prefix == 'user_'.
*
* @uses apply_filters() Calls 'edit_user_$field' passing $value and $user_id if $context == 'db'.
* @uses apply_filters() Calls 'pre_$field' passing $value if $context == 'db' and field name prefix == 'user_'.
* @uses apply_filters() Calls '${field}_pre' passing $value if $context == 'db' and field name prefix != 'user_'.
*
* @uses apply_filters() Calls '$field' passing $value, $user_id and $context if $context == anything
* other than 'raw', 'edit' and 'db' and field name prefix == 'user_'.
* @uses apply_filters() Calls 'user_$field' passing $value if $context == anything other than 'raw',
* 'edit' and 'db' and field name prefix != 'user_'.
*
* @param string $field The user Object field name.
* @param mixed $value The user Object value.
* @param int $user_id user ID.
* @param string $context How to sanitize user fields. Looks for 'raw', 'edit', 'db', 'display',
* 'attribute' and 'js'.
* @return mixed Sanitized value.
*/
function sanitize_user_field($field, $value, $user_id, $context) {
$int_fields = array('ID');
if ( in_array($field, $int_fields) )
$value = (int) $value;
if ( 'raw' == $context )
return $value;
if ( !is_string($value) && !is_numeric($value) )
return $value;
$prefixed = false;
if ( false !== strpos($field, 'user_') ) {
$prefixed = true;
$field_no_prefix = str_replace('user_', '', $field);
}
if ( 'edit' == $context ) {
if ( $prefixed ) {
$value = apply_filters("edit_$field", $value, $user_id);
} else {
$value = apply_filters("edit_user_$field", $value, $user_id);
}
if ( 'description' == $field )
$value = esc_html($value);
else
$value = esc_attr($value);
} else if ( 'db' == $context ) {
if ( $prefixed ) {
$value = apply_filters("pre_$field", $value);
} else {
$value = apply_filters("pre_user_$field", $value);
}
} else {
// Use display filters by default.
if ( $prefixed )
$value = apply_filters($field, $value, $user_id, $context);
else
$value = apply_filters("user_$field", $value, $user_id, $context);
}
if ( 'user_url' == $field )
$value = esc_url($value);
if ( 'attribute' == $context )
$value = esc_attr($value);
else if ( 'js' == $context )
$value = esc_js($value);
return $value;
}
/**
* Update all user caches
*
* @since 3.0.0
*
* @param object $user User object to be cached
*/
function update_user_caches(&$user) {
wp_cache_add($user->ID, $user, 'users');
wp_cache_add($user->user_login, $user->ID, 'userlogins');
wp_cache_add($user->user_email, $user->ID, 'useremail');
wp_cache_add($user->user_nicename, $user->ID, 'userslugs');
}
/**
* Clean all user caches
*
* @since 3.0.0
*
* @param int $id User ID
*/
function clean_user_cache($id) {
$user = new WP_User($id);
wp_cache_delete($id, 'users');
wp_cache_delete($user->user_login, 'userlogins');
wp_cache_delete($user->user_email, 'useremail');
wp_cache_delete($user->user_nicename, 'userslugs');
}
?>