wpmu_create_user( string $user_name, string $password, string $email )

Create a user.

Description Description

This function runs when a user self-registers as well as when a Super Admin creates a new user. Hook to ‘wpmu_new_user’ for events that should affect all new users, but only on Multisite (otherwise use {@see’user_register’}).

Parameters Parameters


(string) (Required) The new user's login name.


(string) (Required) The new user's password.


(string) (Required) The new user's email address.

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Return Return

(int|false) Returns false on failure, or int $user_id on success

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Source Source

File: wp-includes/ms-functions.php

function wpmu_create_user( $user_name, $password, $email ) {
	$user_name = preg_replace( '/\s+/', '', sanitize_user( $user_name, true ) );

	$user_id = wp_create_user( $user_name, $password, $email );
	if ( is_wp_error( $user_id ) ) {
		return false;

	// Newly created users have no roles or caps until they are added to a blog.
	delete_user_option( $user_id, 'capabilities' );
	delete_user_option( $user_id, 'user_level' );

	 * Fires immediately after a new user is created.
	 * @since MU (3.0.0)
	 * @param int $user_id User ID.
	do_action( 'wpmu_new_user', $user_id );

	return $user_id;

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Changelog Changelog

Version Description
MU (3.0.0) Introduced.

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