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

查看:158
本文介绍了如何处理PDO异常的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我正在尝试使用php上的 PDO 类,但是我有一些麻烦找到正确的方法来处理错误,我写了这段代码:

 <?php 
// $连接alreay创建在类似UPDATE语句的类上
/ /我只是简单地添加了trim()和PDO :: PARAM ...数据类型


$ 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; //它返回一个空值,并且没有报告错误

?>

这部分代码不报告错误,但它根本不起作用,var $ status 在底部,返回一个空值。



有人可以帮我找到我错的地方吗?

解决方案

PDO不会抛出异常,除非你告诉它。你运行:

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

在PDO对象上?


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

?>

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

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

解决方案

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

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

on the PDO object?

这篇关于如何处理PDO异常的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆