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https://github.com/WordPress/WordPress.git
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git-svn-id: http://svn.automattic.com/wordpress/trunk@10683 1a063a9b-81f0-0310-95a4-ce76da25c4cd
606 lines
19 KiB
PHP
606 lines
19 KiB
PHP
<?php
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/**
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* WordPress User API
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*
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* @package WordPress
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*/
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/**
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* Authenticate user with remember capability.
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*
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* The credentials is an array that has 'user_login', 'user_password', and
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* 'remember' indices. If the credentials is not given, then the log in form
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* will be assumed and used if set.
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*
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* The various authentication cookies will be set by this function and will be
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* set for a longer period depending on if the 'remember' credential is set to
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* true.
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*
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* @since 2.5.0
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*
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* @param array $credentials Optional. User info in order to sign on.
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* @param bool $secure_cookie Optional. Whether to use secure cookie.
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* @return object Either WP_Error on failure, or WP_User on success.
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*/
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function wp_signon( $credentials = '', $secure_cookie = '' ) {
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if ( empty($credentials) ) {
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if ( ! empty($_POST['log']) )
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$credentials['user_login'] = $_POST['log'];
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if ( ! empty($_POST['pwd']) )
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$credentials['user_password'] = $_POST['pwd'];
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if ( ! empty($_POST['rememberme']) )
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$credentials['remember'] = $_POST['rememberme'];
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}
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if ( !empty($credentials['remember']) )
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$credentials['remember'] = true;
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else
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$credentials['remember'] = false;
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// TODO do we deprecate the wp_authentication action?
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do_action_ref_array('wp_authenticate', array(&$credentials['user_login'], &$credentials['user_password']));
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if ( '' === $secure_cookie )
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$secure_cookie = is_ssl() ? true : false;
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global $auth_secure_cookie; // XXX ugly hack to pass this to wp_authenticate_cookie
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$auth_secure_cookie = $secure_cookie;
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add_filter('authenticate', 'wp_authenticate_cookie', 30, 3);
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$user = wp_authenticate($credentials['user_login'], $credentials['user_password']);
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if ( is_wp_error($user) ) {
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if ( $user->get_error_codes() == array('empty_username', 'empty_password') ) {
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$user = new WP_Error('', '');
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}
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return $user;
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}
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wp_set_auth_cookie($user->ID, $credentials['remember'], $secure_cookie);
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do_action('wp_login', $credentials['user_login']);
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return $user;
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}
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/**
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* Authenticate the user using the username and password.
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*/
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add_filter('authenticate', 'wp_authenticate_username_password', 20, 3);
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function wp_authenticate_username_password($user, $username, $password) {
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if ( is_a($user, 'WP_User') ) { return $user; }
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if ( empty($username) || empty($password) ) {
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$error = new WP_Error();
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if ( empty($username) )
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$error->add('empty_username', __('<strong>ERROR</strong>: The username field is empty.'));
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if ( empty($password) )
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$error->add('empty_password', __('<strong>ERROR</strong>: The password field is empty.'));
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return $error;
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}
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$userdata = get_userdatabylogin($username);
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if ( !$userdata || ($userdata->user_login != $username) ) {
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return new WP_Error('invalid_username', __('<strong>ERROR</strong>: Invalid username.'));
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}
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$userdata = apply_filters('wp_authenticate_user', $userdata, $password);
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if ( is_wp_error($userdata) ) {
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return $userdata;
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}
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if ( !wp_check_password($password, $userdata->user_pass, $userdata->ID) ) {
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return new WP_Error('incorrect_password', __('<strong>ERROR</strong>: Incorrect password.'));
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}
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$user = new WP_User($userdata->ID);
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return $user;
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}
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/**
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* Authenticate the user using the WordPress auth cookie.
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*/
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function wp_authenticate_cookie($user, $username, $password) {
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if ( is_a($user, 'WP_User') ) { return $user; }
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if ( empty($username) && empty($password) ) {
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$user_id = wp_validate_auth_cookie();
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if ( $user_id )
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return new WP_User($user_id);
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global $auth_secure_cookie;
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if ( $auth_secure_cookie )
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$auth_cookie = SECURE_AUTH_COOKIE;
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else
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$auth_cookie = AUTH_COOKIE;
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if ( !empty($_COOKIE[$auth_cookie]) )
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return new WP_Error('expired_session', __('Please log in again.'));
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// If the cookie is not set, be silent.
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}
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return $user;
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}
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/**
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* Retrieve user data based on field.
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*
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* Use get_profile() will make a database query to get the value of the table
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* column. The value might be cached using the query cache, but care should be
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* taken when using the function to not make a lot of queries for retrieving
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* user profile information.
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*
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* If the $user parameter is not used, then the user will be retrieved from a
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* cookie of the user. Therefore, if the cookie does not exist, then no value
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* might be returned. Sanity checking must be done to ensure that when using
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* get_profile() that empty/null/false values are handled and that something is
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* at least displayed.
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*
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* @since 1.5.0
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* @uses $wpdb WordPress database object to create queries.
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*
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* @param string $field User field to retrieve.
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* @param string $user Optional. User username.
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* @return string The value in the field.
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*/
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function get_profile($field, $user = false) {
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global $wpdb;
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if ( !$user )
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$user = $wpdb->escape($_COOKIE[USER_COOKIE]);
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return $wpdb->get_var( $wpdb->prepare("SELECT $field FROM $wpdb->users WHERE user_login = %s", $user) );
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}
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/**
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* Number of posts user has written.
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*
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* @since 0.71
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* @uses $wpdb WordPress database object for queries.
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*
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* @param int $userid User ID.
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* @return int Amount of posts user has written.
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*/
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function get_usernumposts($userid) {
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global $wpdb;
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$userid = (int) $userid;
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$count = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM $wpdb->posts WHERE post_author = %d AND post_type = 'post' AND ", $userid) . get_private_posts_cap_sql('post'));
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return apply_filters('get_usernumposts', $count, $userid);
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}
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/**
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* Check that the user login name and password is correct.
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*
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* @since 0.71
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* @todo xmlrpc only. Maybe move to xmlrpc.php.
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*
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* @param string $user_login User name.
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* @param string $user_pass User password.
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* @return bool False if does not authenticate, true if username and password authenticates.
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*/
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function user_pass_ok($user_login, $user_pass) {
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$user = wp_authenticate($user_login, $user_pass);
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if ( is_wp_error($user) )
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return false;
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return true;
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}
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//
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// User option functions
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//
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/**
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* Retrieve user option that can be either global, user, or blog.
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*
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* If the user ID is not given, then the current user will be used instead. If
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* the user ID is given, then the user data will be retrieved. The filter for
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* the result, will also pass the original option name and finally the user data
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* object as the third parameter.
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*
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* The option will first check for the non-global name, then the global name,
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* and if it still doesn't find it, it will try the blog option. The option can
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* either be modified or set by a plugin.
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*
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* @since 2.0.0
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* @uses $wpdb WordPress database object for queries.
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* @uses apply_filters() Calls 'get_user_option_$option' hook with result,
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* option parameter, and user data object.
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*
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* @param string $option User option name.
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* @param int $user Optional. User ID.
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* @param bool $check_blog_options Whether to check for an option in the options table if a per-user option does not exist. Default is true.
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* @return mixed
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*/
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function get_user_option( $option, $user = 0, $check_blog_options = true ) {
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global $wpdb;
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$option = preg_replace('|[^a-z0-9_]|i', '', $option);
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if ( empty($user) )
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$user = wp_get_current_user();
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else
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$user = get_userdata($user);
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if ( isset( $user->{$wpdb->prefix . $option} ) ) // Blog specific
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$result = $user->{$wpdb->prefix . $option};
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elseif ( isset( $user->{$option} ) ) // User specific and cross-blog
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$result = $user->{$option};
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elseif ( $check_blog_options ) // Blog global
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$result = get_option( $option );
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else
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$result = false;
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return apply_filters("get_user_option_{$option}", $result, $option, $user);
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}
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/**
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* Update user option with global blog capability.
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*
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* User options are just like user metadata except that they have support for
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* global blog options. If the 'global' parameter is false, which it is by false
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* it will prepend the WordPress table prefix to the option name.
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*
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* @since 2.0.0
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* @uses $wpdb WordPress database object for queries
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*
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* @param int $user_id User ID
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* @param string $option_name User option name.
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* @param mixed $newvalue User option value.
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* @param bool $global Optional. Whether option name is blog specific or not.
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* @return unknown
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*/
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function update_user_option( $user_id, $option_name, $newvalue, $global = false ) {
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global $wpdb;
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if ( !$global )
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$option_name = $wpdb->prefix . $option_name;
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return update_usermeta( $user_id, $option_name, $newvalue );
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}
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/**
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* Get users for the blog.
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*
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* For setups that use the multi-blog feature. Can be used outside of the
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* multi-blog feature.
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*
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* @since 2.2.0
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* @uses $wpdb WordPress database object for queries
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* @uses $blog_id The Blog id of the blog for those that use more than one blog
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*
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* @param int $id Blog ID.
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* @return array List of users that are part of that Blog ID
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*/
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function get_users_of_blog( $id = '' ) {
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global $wpdb, $blog_id;
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if ( empty($id) )
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$id = (int) $blog_id;
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$users = $wpdb->get_results( "SELECT user_id, user_id AS ID, user_login, display_name, user_email, meta_value FROM $wpdb->users, $wpdb->usermeta WHERE {$wpdb->users}.ID = {$wpdb->usermeta}.user_id AND meta_key = '{$wpdb->prefix}capabilities' ORDER BY {$wpdb->usermeta}.user_id" );
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return $users;
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}
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//
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// User meta functions
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//
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/**
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* Remove user meta data.
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*
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* @since 2.0.0
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* @uses $wpdb WordPress database object for queries.
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*
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* @param int $user_id User ID.
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* @param string $meta_key Metadata key.
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* @param mixed $meta_value Metadata value.
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* @return bool True deletion completed and false if user_id is not a number.
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*/
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function delete_usermeta( $user_id, $meta_key, $meta_value = '' ) {
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global $wpdb;
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if ( !is_numeric( $user_id ) )
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return false;
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$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);
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if ( is_array($meta_value) || is_object($meta_value) )
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$meta_value = serialize($meta_value);
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$meta_value = trim( $meta_value );
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if ( ! empty($meta_value) )
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$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s AND meta_value = %s", $user_id, $meta_key, $meta_value) );
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else
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$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );
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wp_cache_delete($user_id, 'users');
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return true;
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}
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/**
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* Retrieve user metadata.
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*
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* If $user_id is not a number, then the function will fail over with a 'false'
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* boolean return value. Other returned values depend on whether there is only
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* one item to be returned, which be that single item type. If there is more
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* than one metadata value, then it will be list of metadata values.
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*
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* @since 2.0.0
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* @uses $wpdb WordPress database object for queries.
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*
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* @param int $user_id User ID
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* @param string $meta_key Optional. Metadata key.
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* @return mixed
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*/
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function get_usermeta( $user_id, $meta_key = '') {
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global $wpdb;
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$user_id = (int) $user_id;
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if ( !$user_id )
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return false;
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if ( !empty($meta_key) ) {
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$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);
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$user = wp_cache_get($user_id, 'users');
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// Check the cached user object
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if ( false !== $user && isset($user->$meta_key) )
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$metas = array($user->$meta_key);
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else
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$metas = $wpdb->get_col( $wpdb->prepare("SELECT meta_value FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );
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} else {
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$metas = $wpdb->get_col( $wpdb->prepare("SELECT meta_value FROM $wpdb->usermeta WHERE user_id = %d", $user_id) );
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}
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if ( empty($metas) ) {
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if ( empty($meta_key) )
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return array();
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else
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return '';
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}
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$metas = array_map('maybe_unserialize', $metas);
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if ( count($metas) == 1 )
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return $metas[0];
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else
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return $metas;
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}
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/**
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* Update metadata of user.
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*
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* There is no need to serialize values, they will be serialized if it is
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* needed. The metadata key can only be a string with underscores. All else will
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* be removed.
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*
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* Will remove the metadata, if the meta value is empty.
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*
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* @since 2.0.0
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* @uses $wpdb WordPress database object for queries
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*
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* @param int $user_id User ID
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* @param string $meta_key Metadata key.
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* @param mixed $meta_value Metadata value.
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* @return bool True on successful update, false on failure.
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*/
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function update_usermeta( $user_id, $meta_key, $meta_value ) {
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global $wpdb;
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if ( !is_numeric( $user_id ) )
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return false;
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$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);
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/** @todo Might need fix because usermeta data is assumed to be already escaped */
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if ( is_string($meta_value) )
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$meta_value = stripslashes($meta_value);
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$meta_value = maybe_serialize($meta_value);
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if (empty($meta_value)) {
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return delete_usermeta($user_id, $meta_key);
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}
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$cur = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );
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if ( !$cur ) {
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$wpdb->query( $wpdb->prepare("INSERT INTO $wpdb->usermeta ( user_id, meta_key, meta_value )
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VALUES
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( %d, %s, %s )", $user_id, $meta_key, $meta_value) );
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} else if ( $cur->meta_value != $meta_value ) {
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$wpdb->query( $wpdb->prepare("UPDATE $wpdb->usermeta SET meta_value = %s WHERE user_id = %d AND meta_key = %s", $meta_value, $user_id, $meta_key) );
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} else {
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return false;
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}
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wp_cache_delete($user_id, 'users');
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return true;
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}
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//
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// Private helper functions
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//
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/**
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* Setup global user vars.
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*
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* Used by set_current_user() for back compat. Might be deprecated in the
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* future.
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*
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* @since 2.0.4
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* @global string $userdata User description.
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* @global string $user_login The user username for logging in
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* @global int $user_level The level of the user
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* @global int $user_ID The ID of the user
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* @global string $user_email The email address of the user
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* @global string $user_url The url in the user's profile
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* @global string $user_pass_md5 MD5 of the user's password
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* @global string $user_identity The display name of the user
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*
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* @param int $user_id Optional. User ID to setup global data.
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*/
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function setup_userdata($user_id = '') {
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global $user_login, $userdata, $user_level, $user_ID, $user_email, $user_url, $user_pass_md5, $user_identity;
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if ( '' == $user_id )
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$user = wp_get_current_user();
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else
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$user = new WP_User($user_id);
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if ( 0 == $user->ID )
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return;
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$userdata = $user->data;
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$user_login = $user->user_login;
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$user_level = (int) isset($user->user_level) ? $user->user_level : 0;
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$user_ID = (int) $user->ID;
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$user_email = $user->user_email;
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$user_url = $user->user_url;
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$user_pass_md5 = md5($user->user_pass);
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$user_identity = $user->display_name;
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}
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/**
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* Create dropdown HTML content of users.
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*
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* The content can either be displayed, which it is by default or retrieved by
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* setting the 'echo' argument. The 'include' and 'exclude' arguments do not
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* need to be used; all users will be displayed in that case. Only one can be
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* used, either 'include' or 'exclude', but not both.
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*
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* The available arguments are as follows:
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* <ol>
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* <li>show_option_all - Text to show all and whether HTML option exists.</li>
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* <li>show_option_none - Text for show none and whether HTML option exists.
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* </li>
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* <li>orderby - SQL order by clause for what order the users appear. Default is
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* 'display_name'.</li>
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* <li>order - Default is 'ASC'. Can also be 'DESC'.</li>
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|
* <li>include - User IDs to include.</li>
|
|
* <li>exclude - User IDs to exclude.</li>
|
|
* <li>multi - Default is 'false'. Whether to skip the ID attribute on the 'select' element.</li>
|
|
* <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 parentesis</li>
|
|
* <li>echo - Default is '1'. Whether to display or retrieve content.</li>
|
|
* <li>selected - Which User ID is selected.</li>
|
|
* <li>name - Default is 'user'. Name attribute of select element.</li>
|
|
* <li>class - Class attribute of select element.</li>
|
|
* </ol>
|
|
*
|
|
* @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' => ''
|
|
);
|
|
|
|
$defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
|
|
|
|
$r = wp_parse_args( $args, $defaults );
|
|
extract( $r, EXTR_SKIP );
|
|
|
|
$query = "SELECT * FROM $wpdb->users";
|
|
|
|
$query_where = array();
|
|
|
|
if ( is_array($include) )
|
|
$include = join(',', $include);
|
|
$include = preg_replace('/[^0-9,]/', '', $include); // (int)
|
|
if ( $include )
|
|
$query_where[] = "ID IN ($include)";
|
|
|
|
if ( is_array($exclude) )
|
|
$exclude = join(',', $exclude);
|
|
$exclude = preg_replace('/[^0-9,]/', '', $exclude); // (int)
|
|
if ( $exclude )
|
|
$query_where[] = "ID NOT IN ($exclude)";
|
|
|
|
if ( $query_where )
|
|
$query .= " WHERE " . join(' AND', $query_where);
|
|
|
|
$query .= " ORDER BY $orderby $order";
|
|
|
|
$users = $wpdb->get_results( $query );
|
|
|
|
$output = '';
|
|
if ( !empty($users) ) {
|
|
$id = $multi ? "" : "id='$name'";
|
|
|
|
$output = "<select name='$name' $id class='$class'>\n";
|
|
|
|
if ( $show_option_all )
|
|
$output .= "\t<option value='0'>$show_option_all</option>\n";
|
|
|
|
if ( $show_option_none )
|
|
$output .= "\t<option value='-1'>$show_option_none</option>\n";
|
|
|
|
foreach ( (array) $users as $user ) {
|
|
$user->ID = (int) $user->ID;
|
|
$_selected = $user->ID == $selected ? " selected='selected'" : '';
|
|
$display = !empty($user->$show) ? $user->$show : '('. $user->user_login . ')';
|
|
$output .= "\t<option value='$user->ID'$_selected>" . wp_specialchars($display) . "</option>\n";
|
|
}
|
|
|
|
$output .= "</select>";
|
|
}
|
|
|
|
$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 purpose seems then to be to ensure
|
|
* that the data in the object is always fresh.
|
|
*
|
|
* @access private
|
|
* @since 2.5.0
|
|
* @uses $wpdb WordPress database object for queries
|
|
*
|
|
* @param object $user The user data object.
|
|
*/
|
|
function _fill_user( &$user ) {
|
|
global $wpdb;
|
|
|
|
$show = $wpdb->hide_errors();
|
|
$metavalues = $wpdb->get_results($wpdb->prepare("SELECT meta_key, meta_value FROM $wpdb->usermeta WHERE user_id = %d", $user->ID));
|
|
$wpdb->show_errors($show);
|
|
|
|
if ( $metavalues ) {
|
|
foreach ( (array) $metavalues as $meta ) {
|
|
$value = maybe_unserialize($meta->meta_value);
|
|
$user->{$meta->meta_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 = $user->description;
|
|
|
|
wp_cache_add($user->ID, $user, 'users');
|
|
wp_cache_add($user->user_login, $user->ID, 'userlogins');
|
|
wp_cache_add($user->user_email, $user->ID, 'useremail');
|
|
}
|
|
|
|
?>
|