Pluggable function — this function can be replaced from a plugin. It means that this function is defined (works) only after all plugins are loaded (included), but before this moment this function has not defined. Therefore, you cannot call this and all functions depended on this function directly from a plugin code. They need to be called on plugins_loaded hook or later, for example on init hook.
Function replacement (override) — in must-use or regular plugin you can create a function with the same name, then it will replace this function.
Suppose, when registering a user, you need to notify yourself (you are the admin) and send an email to the new user by email with a link to set a new password:
New user registration on your site Example:
Username: user
Email: [email protected]
The user will get:
Username: user
To set your password, visit the following address:
<http://example.com/wp-login.php?action=rp&key=1ORsgCiUtZdwDw3tss4U&login=user>
http://example.com/wp-login.php
Changelog
Since 2.0.0
Introduced.
Since 4.3.0
The $plaintext_pass parameter was changed to $notify.
Since 4.3.1
The $plaintext_pass parameter was deprecated. $notify added as a third parameter.
Since 4.6.0
The $notify parameter accepts 'user' for sending notification only to the user created.
wp_new_user_notification() wp new user notification code WP 6.8.1
function wp_new_user_notification( $user_id, $deprecated = null, $notify = '' ) {
if ( null !== $deprecated ) {
_deprecated_argument( __FUNCTION__, '4.3.1' );
}
// Accepts only 'user', 'admin' , 'both' or default '' as $notify.
if ( ! in_array( $notify, array( 'user', 'admin', 'both', '' ), true ) ) {
return;
}
$user = get_userdata( $user_id );
/*
* The blogname option is escaped with esc_html() on the way into the database in sanitize_option().
* We want to reverse this for the plain text arena of emails.
*/
$blogname = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
/**
* Filters whether the admin is notified of a new user registration.
*
* @since 6.1.0
*
* @param bool $send Whether to send the email. Default true.
* @param WP_User $user User object for new user.
*/
$send_notification_to_admin = apply_filters( 'wp_send_new_user_notification_to_admin', true, $user );
if ( 'user' !== $notify && true === $send_notification_to_admin ) {
$admin_user = get_user_by( 'email', get_option( 'admin_email' ) );
if ( $admin_user ) {
$switched_locale = switch_to_user_locale( $admin_user->ID );
} else {
$switched_locale = switch_to_locale( get_locale() );
}
/* translators: %s: Site title. */
$message = sprintf( __( 'New user registration on your site %s:' ), $blogname ) . "\r\n\r\n";
/* translators: %s: User login. */
$message .= sprintf( __( 'Username: %s' ), $user->user_login ) . "\r\n\r\n";
/* translators: %s: User email address. */
$message .= sprintf( __( 'Email: %s' ), $user->user_email ) . "\r\n";
$wp_new_user_notification_email_admin = array(
'to' => get_option( 'admin_email' ),
/* translators: New user registration notification email subject. %s: Site title. */
'subject' => __( '[%s] New User Registration' ),
'message' => $message,
'headers' => '',
);
/**
* Filters the contents of the new user notification email sent to the site admin.
*
* @since 4.9.0
*
* @param array $wp_new_user_notification_email_admin {
* Used to build wp_mail().
*
* @type string $to The intended recipient - site admin email address.
* @type string $subject The subject of the email.
* @type string $message The body of the email.
* @type string $headers The headers of the email.
* }
* @param WP_User $user User object for new user.
* @param string $blogname The site title.
*/
$wp_new_user_notification_email_admin = apply_filters( 'wp_new_user_notification_email_admin', $wp_new_user_notification_email_admin, $user, $blogname );
wp_mail(
$wp_new_user_notification_email_admin['to'],
wp_specialchars_decode( sprintf( $wp_new_user_notification_email_admin['subject'], $blogname ) ),
$wp_new_user_notification_email_admin['message'],
$wp_new_user_notification_email_admin['headers']
);
if ( $switched_locale ) {
restore_previous_locale();
}
}
/**
* Filters whether the user is notified of their new user registration.
*
* @since 6.1.0
*
* @param bool $send Whether to send the email. Default true.
* @param WP_User $user User object for new user.
*/
$send_notification_to_user = apply_filters( 'wp_send_new_user_notification_to_user', true, $user );
// `$deprecated` was pre-4.3 `$plaintext_pass`. An empty `$plaintext_pass` didn't sent a user notification.
if ( 'admin' === $notify || true !== $send_notification_to_user || ( empty( $deprecated ) && empty( $notify ) ) ) {
return;
}
$key = get_password_reset_key( $user );
if ( is_wp_error( $key ) ) {
return;
}
$switched_locale = switch_to_user_locale( $user_id );
/* translators: %s: User login. */
$message = sprintf( __( 'Username: %s' ), $user->user_login ) . "\r\n\r\n";
$message .= __( 'To set your password, visit the following address:' ) . "\r\n\r\n";
/*
* Since some user login names end in a period, this could produce ambiguous URLs that
* end in a period. To avoid the ambiguity, ensure that the login is not the last query
* arg in the URL. If moving it to the end, a trailing period will need to be escaped.
*
* @see https://core.trac.wordpress.org/tickets/42957
*/
$message .= network_site_url( 'wp-login.php?login=' . rawurlencode( $user->user_login ) . "&key=$key&action=rp", 'login' ) . "\r\n\r\n";
$message .= wp_login_url() . "\r\n";
$wp_new_user_notification_email = array(
'to' => $user->user_email,
/* translators: Login details notification email subject. %s: Site title. */
'subject' => __( '[%s] Login Details' ),
'message' => $message,
'headers' => '',
);
/**
* Filters the contents of the new user notification email sent to the new user.
*
* @since 4.9.0
*
* @param array $wp_new_user_notification_email {
* Used to build wp_mail().
*
* @type string $to The intended recipient - New user email address.
* @type string $subject The subject of the email.
* @type string $message The body of the email.
* @type string $headers The headers of the email.
* }
* @param WP_User $user User object for new user.
* @param string $blogname The site title.
*/
$wp_new_user_notification_email = apply_filters( 'wp_new_user_notification_email', $wp_new_user_notification_email, $user, $blogname );
wp_mail(
$wp_new_user_notification_email['to'],
wp_specialchars_decode( sprintf( $wp_new_user_notification_email['subject'], $blogname ) ),
$wp_new_user_notification_email['message'],
$wp_new_user_notification_email['headers']
);
if ( $switched_locale ) {
restore_previous_locale();
}
}
