Question

我在index.php文件中直接使用PDO查询。现在我想创建单独的文件来存储函数。我创建了一个，但是当我调用函数时只返回“0”。旧版本有效：

$abfrage11 = "SELECT COUNT(e.event_id) as numgoals
FROM event e 
WHERE (e.match_id = '$row1->match_id' AND e.team_id = '$row1->team_a_id' AND e.eventtype IN ('soc_G','soc_PG') ) OR
      (e.match_id = '$row1->match_id' AND e.team_id = '$row1->team_b_id' AND e.eventtype = 'soc_OG' )";
$ergebnis11 = $dbh->query($abfrage11);
$row11 = $ergebnis11->fetch(PDO::FETCH_OBJ);

新版本不支持：

单独的文件“storage.php”：

class StorageAccess
{
    /** @var  PDO */
    public $db;

    /**
     * @param $db
     */
    public function __construct($db)
    {
        $this->db = $db;

    }
public function getAbfrage11()
    {
        $query = "SELECT COUNT(e.event_id) as numgoals
                    FROM event e 
                    WHERE (e.match_id = :mId AND e.team_id = :tmA AND e.eventtype IN ('soc_G','soc_PG') ) OR
                          (e.match_id = :mId2 AND e.team_id = :tmB AND e.eventtype = 'soc_OG' )";
        $statement = $this->db->prepare($query);
        $statement->execute([
            ':mId' => $row1->match_id,
            ':mId2' => $row1->match_id,
            ':tmA' => $row1->team_a_id,
            ':tmB' => $row1->team_b_id,
        ]);
        return $statement->fetchObject();
    }
}

调用index.php：

require_once("dblogin.php");
require_once("Storage.php");

$dbFactory = new RepositoriesFactory();
$dbh = $dbFactory->getDataBaseInstance('admgsa_gsa');
$storage_access = new StorageAccess($dbh);

$row11 = $storage_access->getAbfrage11();
echo "<span class='live-monitor-8' style=\"$goalscbgcolor\">$row11->numgoals</span>";

试图搜索解决方案，但找不到任何东西。提前感谢您的帮助。

Answer 1

得到了什么问题。我没有指定输入参数：

var sales=db.Customers
    .GroupBy(c=>c.SomeColumn)
    .Select(g=>new
     {
        Count1=g.Count(someCondition),
        Count2=g.Count(otherCondition)
     })
    .Select(c=> new MyModel
     {
        count1=c.Count1,
        count2=c.Count2, 
        finalCount=c.Count1-c.Count2
     });

这解决了我的问题。

PDO无法获取任何结果

1 个答案: