WP_User::remove_all_caps() WordPress Method

	public function remove_all_caps() {
		global $wpdb;
		$this->caps = array();
		delete_user_meta( $this->ID, $this->cap_key );
		delete_user_meta( $this->ID, $wpdb->get_blog_prefix() . 'user_level' );
		$this->get_role_caps();
	}
Uses	Description
wp-includes/class-wp-user.php:WP_User::get_role_caps()	Retrieves all of the capabilities of the user’s roles, and merges them with individual user capabilities.
wp-includes/user.php:delete_user_meta()	Removes metadata matching criteria from a user.
wp-includes/wp-db.php:wpdb::get_blog_prefix()	Gets blog prefix.