因此,我有一个wp mysql db列,如下所示:

`update_number` =  int(11) Null:No, default:0


然后我有以下PHP:

$RSS_UPDATE = $wpdb->get_results("SELECT update_number FROM $table WHERE sub_id = $post_id");
if ( $RSS_UPDATE )
{
    foreach ( $RSS_UPDATE as $RSS_SINGLE )
    {
        $RSS_ROW_NEW  = $RSS_SINGLE + 1;
        $wpdb->update($table, array('update_number' => $RSS_ROW_NEW),array( 'sub_id' => $post_id ));
    }
}


因此,想法是,对于sub_id = $post_id的任何结果,然后获取所有update_number。 (即可能是“ 0,2,1,4,2,2”)

然后,对于每个值,我想将整数值增加+1并更新它。

但是,我正在获取Object of class stdClass could not be converted to int

我究竟做错了什么?

最佳答案

我认为您需要确保$ RSS_SINGLE是字符串或整数

var_dump($ RSS_SINGLE);退出;



$RSS_UPDATE = $wpdb->get_results("SELECT update_number FROM $table WHERE sub_id = $post_id");
if ( $RSS_UPDATE )
{
    foreach ( $RSS_UPDATE as $RSS_SINGLE )
    {
        $RSS_ROW_NEW  = $RSS_SINGLE->update_number + 1;
        $wpdb->update($table, array('update_number' => $RSS_ROW_NEW),array( 'sub_id' => $post_id ));
    }
}

10-07 18:59
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