我得到这个警告：在/home/customer/www/example中遇到一个非数字值。com/public\\u html/wp-content/themes/boombox/includes/functions。php在线2466

我尝试将其从更改为=>$manual\\u amount+$用户\\u投票；至$manual\\u amount+=$用户\\u投票；（它抛出相同的警告）和$manual\\u金额$user\\u投票；（它连接数字，而不是添加数字）

 /**
 * Return post point count
 *
 * @param $post_id
 *
 * @return int
 */
function boombox_get_post_point_count($post_id)
{
    $points_count = 0;
    /*if ( boombox_module_management_service()->is_module_active( \'prs\' ) ) {
        $points_count = Boombox_Point_Count_Helper::get_post_points( $post_id );
    }*/
    $manual_amount = get_post_meta($post_id, "manual_vote_amount", true);
    $user_votes = get_post_meta($post_id, "add_vote_amount", true);
    $points_count = $manual_amount + $user_votes;
    return $points_count;
}