php - PDO关于LIMIT的bindParam问题

Question

我有一个关于 PDO 的问题。此代码块有效

$MyQuery = $db->prepare("UPDATE project
SET
PeopleId=:PID,
UserId=:UID
WHERE
PeopleId=:PeopleId
AND
UserID=:UserID
AND
(
                alpha = 0
                OR alpha IS NULL
            )  LIMIT ".$Adet);

            $MyQuery->bindParam(":PID", $PID, PDO::PARAM_INT);
            $MyQuery->bindParam(":UID", $UID, PDO::PARAM_INT);
            $MyQuery->bindParam(":PeopleId", $PeopleId, PDO::PARAM_INT);
            $MyQuery->bindParam(":UserID", $UserID, PDO::PARAM_INT);
            $MyQuery->execute();

但是没有成功。

$MyQuery = $db->prepare("UPDATE project
SET
PeopleId=:PID,
UserId=:UID
WHERE
PeopleId=:PeopleId
AND
UserID=:UserID
AND
(
                alpha = 0
                OR alpha IS NULL
            )  LIMIT :Count");

            $MyQuery->bindParam(":PID", $PID, PDO::PARAM_INT);
            $MyQuery->bindParam(":UID", $UID, PDO::PARAM_INT);
            $MyQuery->bindParam(":PeopleId", $PeopleId, PDO::PARAM_INT);
            $MyQuery->bindParam(":UserID", $UserID, PDO::PARAM_INT);
            $MyQuery->bindParam(":Count",$Count, PDO::PARAM_INT);
            $MyQuery->execute();

我的错在哪里？我什么也没找到。我猜有一个错误。我将 $Count 转换为 Integer 但它不再起作用。谁能帮我解决这个问题吗？

Answer 1

强制 $Count 变量为整数，

$MyQuery->bindParam(":Count", (int) $Count, PDO::PARAM_INT);

也许也修剪一下:(在 Muhammed Almaz tnx 的评论后编辑:D)

$Count = trim($Count)    
$MyQuery->bindParam(":Count", (int) $Count, PDO::PARAM_INT);