如何处理 PDO 异常 [英] How to handle PDO exceptions

问题描述

我正在尝试在 php 上使用 PDO 类，但是我在找到处理错误的正确方法方面遇到了一些麻烦，我写了这段代码:

I'm trying to work with PDO class on php but I have some trouble to find the right way to handle errors, I've wrote this code:

<?php
// $connection alreay created on a class which works with similar UPDATE statements
// I've simply added here trim() and PDO::PARAM... data type


$id = 33;
$name = "Mario Bros.";
$url = "http://nintendo.com";
$country = "jp";


try {

$sql = "UPDATE table_users SET name = :name, url = :url, country = :country WHERE user_id = :user_id";

$statement = $connection->prepare ($sql);

$statement->bindParam (':user_id', trim($id), PDO::PARAM_INT);
$statement->bindParam (':name', trim($name), PDO::PARAM_STR);
$statement->bindParam (':url', trim($url), PDO::PARAM_STR);
$statement->bindParam (':country', trim($country), PDO::PARAM_STR, 2);

$status = $statement->execute ();

} catch (PDOException $e) {
    print $e->getMessage ();
}

print $status; // it returns a null value, and no errors are reported

?>

这部分代码不报告错误，但它根本不起作用，底部的 var $status 返回空值.

this portion of code doesn't report errors, but it simply doesn't work, the var $status at the bottom, return a null value.

有人可以帮我找出我错在哪里吗?

can someone help me to find where I'm wrong?

推荐答案

PDO 不会抛出异常，除非你告诉它.你跑了吗:

PDO won't throw exceptions unless you tell it to. Have you run:

$connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

在 PDO 对象上?

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