警告:PDOStatement :: execute():SQLSTATE [HY093]:无效的参数号 [英] Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number

问题描述

我在使用pdo进行选择语句时出现错误，并且我不理解为什么会发生这种情况.

Im having an error with select statment using pdo, and Im not understanding the reason why this is happening.

您在这里看到错了吗?

我遇到此错误:

警告:PDOStatement :: execute():SQLSTATE [HY093]:无效的参数编号:$ readGallery-> execute()中未定义参数；

Warning: PDOStatement::execute(): SQLSTATE[HY093]: Invalid parameter number: parameter was not defined in $readGallery->execute();

$delId = $_GET['delid'];
$thumb = $_GET['thumb'];
$folder = '../uploads/';
$readGallery = $pdo->prepare("SELECT * FROM gallery WHERE news_id = ?");
$readGallery->bindParam(':news_id', $delId);
$readGallery->execute();
$numGallery =   $readGallery->rowCount();

推荐答案

更改

$readGallery = $pdo->prepare("SELECT * FROM gallery WHERE news_id = ?");

到

$readGallery = $pdo->prepare("SELECT * FROM gallery WHERE news_id = :news_id");

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