Ticket #41757: 41757.diff

src/wp-includes/ms-functions.php

@@ -2149 +2149 @@
 
                 if ( ! is_wp_error( $result ) ) {
                         update_user_meta( $user_id, 'primary_blog', $blog_id );
+
+                        /**
+                         * Fires immediately after a new user is added to a site.
+                         *
+                         * @since 4.9.0
+                         *
+                         * @param int    $user_id  User ID.
+                         * @param int    $blog_id  Blog ID.
+                         * @param string $password User password.
+                         * @param array  $meta     Array of meta data from signup.
+                         */
+                        do_action( 'added_new_user', $user_id, $blog_id, $password, $meta );
                 }
         }
 }