2092* @since 5.6.02093*2094* @param int|false$user_id The user ID associated with the email,2095*orfalseif the email does not exist.2096* @param string$email The email to check for existence.2097*/2098returnapply_filters('email_exists',$user_id,$email);2099}21002101/**2102* Checks whether a username is valid.2103*2104* @since 2.0.1
History
Introduced in 5.6.0. Unchanged from 6.7.7 through 7.1.0.