How to send email password when creating a new user by API in Wordpress?

Question

It is possible to create a new user by API with the following line:

$user_id = wp_insert_user( $user_data );

I wonder how to send the newly created user an email that contains his password? Is there any function in Wordpress API that handles this job or should I create and send an email by myself?

Answer 1

As David guessed (but didn't specify), there is some functionality inside Wordpress to do this: wp_new_user_notification($user_id, $user_pass).

So, rewriting the above code, it should look like this (code has been edited after parameter deprecation in 4.3.1):

$user_id = wp_insert_user( $user_data );
wp_new_user_notification( $user_id, null, 'both' );

Edit: Please also see @ale's comment below.