WordPress/wp-includes/registration.php

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<?php
/**
* Checks whether the given username exists.
* @param string $username Username.
* @return mixed The user's ID on success, and null on failure.
*/
function username_exists( $username ) {
if ( $user = get_userdatabylogin( sanitize_user( $username ) ) ) {
return $user->ID;
} else {
return null;
}
}
/**
* Checks whether the given email exists.
* @global object $wpdb WordPress database layer.
* @param string $email Email.
* @return mixed The user's ID on success, and false on failure.
*/
function email_exists( $email ) {
global $wpdb;
return $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->users WHERE user_email = %s", $email) );
}
/**
* Checks whether an username is valid.
* @param string $username Username.
* @return bool A filtered boolean.
*/
function validate_username( $username ) {
$sanitized = sanitize_user( $username, true );
$valid = ( $sanitized == $username );
return apply_filters( 'validate_username', $valid, $username );
}
/**
* Insert an user into the database.
* @global object $wpdb WordPress database layer.
* @param array $userdata An array of user data.
* @return int The newly created user's ID.
*/
function wp_insert_user($userdata) {
global $wpdb;
extract($userdata, EXTR_SKIP);
// Are we updating or creating?
if ( !empty($ID) ) {
$ID = (int) $ID;
$update = true;
} else {
$update = false;
// Password is not hashed when creating new user.
$user_pass = md5($user_pass);
}
$user_login = sanitize_user($user_login, true);
$user_login = apply_filters('pre_user_login', $user_login);
if ( empty($user_nicename) )
$user_nicename = sanitize_title( $user_login );
$user_nicename = apply_filters('pre_user_nicename', $user_nicename);
if ( empty($user_url) )
$user_url = '';
$user_url = apply_filters('pre_user_url', $user_url);
if ( empty($user_email) )
$user_email = '';
$user_email = apply_filters('pre_user_email', $user_email);
if ( empty($display_name) )
$display_name = $user_login;
$display_name = apply_filters('pre_user_display_name', $display_name);
if ( empty($nickname) )
$nickname = $user_login;
$nickname = apply_filters('pre_user_nickname', $nickname);
if ( empty($first_name) )
$first_name = '';
$first_name = apply_filters('pre_user_first_name', $first_name);
if ( empty($last_name) )
$last_name = '';
$last_name = apply_filters('pre_user_last_name', $last_name);
if ( empty($description) )
$description = '';
$description = apply_filters('pre_user_description', $description);
if ( empty($rich_editing) )
$rich_editing = 'true';
if ( empty($user_registered) )
$user_registered = gmdate('Y-m-d H:i:s');
$data = compact( 'user_pass', 'user_email', 'user_url', 'user_nicename', 'display_name', 'user_registered' );
if ( $update ) {
$wpdb->update( $wpdb->users, $data, compact( 'ID' ) );
$user_id = (int) $ID;
} else {
$wpdb->insert( $wpdb->users, $data + compact( 'user_login' ) );
$user_id = (int) $wpdb->insert_id;
}
update_usermeta( $user_id, 'first_name', $first_name);
update_usermeta( $user_id, 'last_name', $last_name);
update_usermeta( $user_id, 'nickname', $nickname );
update_usermeta( $user_id, 'description', $description );
update_usermeta( $user_id, 'jabber', $jabber );
update_usermeta( $user_id, 'aim', $aim );
update_usermeta( $user_id, 'yim', $yim );
update_usermeta( $user_id, 'rich_editing', $rich_editing);
if ( $update && isset($role) ) {
$user = new WP_User($user_id);
$user->set_role($role);
}
if ( !$update ) {
$user = new WP_User($user_id);
$user->set_role(get_option('default_role'));
}
wp_cache_delete($user_id, 'users');
wp_cache_delete($user_login, 'userlogins');
if ( $update )
do_action('profile_update', $user_id);
else
do_action('user_register', $user_id);
return $user_id;
}
/**
* Update an user in the database.
* @param array $userdata An array of user data.
* @return int The updated user's ID.
*/
function wp_update_user($userdata) {
$ID = (int) $userdata['ID'];
// First, get all of the original fields
$user = get_userdata($ID);
// Escape data pulled from DB.
$user = add_magic_quotes(get_object_vars($user));
// If password is changing, hash it now.
if ( ! empty($userdata['user_pass']) ) {
$plaintext_pass = $userdata['user_pass'];
$userdata['user_pass'] = md5($userdata['user_pass']);
}
// Merge old and new fields with new fields overwriting old ones.
$userdata = array_merge($user, $userdata);
$user_id = wp_insert_user($userdata);
// Update the cookies if the password changed.
$current_user = wp_get_current_user();
if ( $current_user->id == $ID ) {
if ( isset($plaintext_pass) ) {
wp_clearcookie();
wp_setcookie($userdata['user_login'], $plaintext_pass);
}
}
return $user_id;
}
/**
* A simpler way of inserting an user into the database.
* See also: wp_insert_user().
* @global object $wpdb WordPress database layer.
* @param string $username The user's username.
* @param string $password The user's password.
* @param string $email The user's email (optional).
* @return int The new user's ID.
*/
function wp_create_user($username, $password, $email = '') {
global $wpdb;
$user_login = $wpdb->escape($username);
$user_email = $wpdb->escape($email);
$user_pass = $password;
$userdata = compact('user_login', 'user_email', 'user_pass');
return wp_insert_user($userdata);
}
/**
* An alias of wp_create_user().
* @param string $username The user's username.
* @param string $password The user's password.
* @param string $email The user's email (optional).
* @return int The new user's ID.
* @deprecated
*/
function create_user($username, $password, $email) {
return wp_create_user($username, $password, $email);
}
?>