src/properties/class-papi-property-user.php
public function get_value() {
		$user = parent::get_value();

		if ( is_object( $user ) && isset( $user->ID ) ) {
			return $user->ID;
		}

		return 0;
	}
public function get_value() {
		$user = parent::get_value();

		if ( is_object( $user ) && isset( $user->ID ) ) {
			return $user->ID;
		}

		return 0;
	}
Get value from database.

@return int