wp_insert_user custom validation

[shamim51]

Currently there are no hooks in wp_insert_user where plugin can hook to validate any custom validation and prevent to insert/update user.

If there can be added a hook before insert/update user to database, that will be very helpful for custom validation.

sample code can be following

$custom_user_validate = apply_filters( 'custom_user_validate', false );

if ( is_wp_error( $custom_user_validate ) ) {
        return $custom_user_validate;
}