From cbe4f5d9c7bf7af79b30e7ed1ef75459ec79e5a3 Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov@git.wordpress.org>
Date: Thu, 21 Apr 2016 10:19:42 +0000
Subject: [PATCH] Users: In `wp_new_user_notification()`, sdd `'user'` option
 for the `$notify` parameter, which allows for sending notification only to
 the user created.

Props akibjorklund.
Fixes #36009.

git-svn-id: https://develop.svn.wordpress.org/trunk@37276 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/pluggable.php | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/wp-includes/pluggable.php b/src/wp-includes/pluggable.php
index 31533d5113..b08df9b954 100644
--- a/src/wp-includes/pluggable.php
+++ b/src/wp-includes/pluggable.php
@@ -1691,6 +1691,7 @@ if ( !function_exists('wp_new_user_notification') ) :
  * @since 2.0.0
  * @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.
  *
  * @global wpdb         $wpdb      WordPress database object for queries.
  * @global PasswordHash $wp_hasher Portable PHP password hashing framework instance.
@@ -1698,7 +1699,7 @@ if ( !function_exists('wp_new_user_notification') ) :
  * @param int    $user_id    User ID.
  * @param null   $deprecated Not used (argument deprecated).
  * @param string $notify     Optional. Type of notification that should happen. Accepts 'admin' or an empty
- *                           string (admin only), or 'both' (admin and user). Default empty.
+ *                           string (admin only), 'user', or 'both' (admin and user). Default empty.
  */
 function wp_new_user_notification( $user_id, $deprecated = null, $notify = '' ) {
 	if ( $deprecated !== null ) {
@@ -1712,11 +1713,13 @@ function wp_new_user_notification( $user_id, $deprecated = null, $notify = '' )
 	// we want to reverse this for the plain text arena of emails.
 	$blogname = wp_specialchars_decode(get_option('blogname'), ENT_QUOTES);
 
-	$message  = sprintf(__('New user registration on your site %s:'), $blogname) . "\r\n\r\n";
-	$message .= sprintf(__('Username: %s'), $user->user_login) . "\r\n\r\n";
-	$message .= sprintf(__('Email: %s'), $user->user_email) . "\r\n";
+	if ( 'user' !== $notify ) {
+		$message  = sprintf( __( 'New user registration on your site %s:' ), $blogname ) . "\r\n\r\n";
+		$message .= sprintf( __( 'Username: %s' ), $user->user_login ) . "\r\n\r\n";
+		$message .= sprintf( __( 'Email: %s' ), $user->user_email ) . "\r\n";
 
-	@wp_mail(get_option('admin_email'), sprintf(__('[%s] New User Registration'), $blogname), $message);
+		@wp_mail( get_option( 'admin_email' ), sprintf( __( '[%s] New User Registration' ), $blogname ), $message );
+	}
 
 	// `$deprecated was pre-4.3 `$plaintext_pass`. An empty `$plaintext_pass` didn't sent a user notifcation.
 	if ( 'admin' === $notify || ( empty( $deprecated ) && empty( $notify ) ) ) {