设为首页 - 加入收藏 云计算网_泰州站长网 (http://www.0523zz.com)- 中小站长必上的网站 - 聚焦泰州站长前沿资讯!
热搜: 2008 google 徐屾屾 P
当前位置: 主页 > 站长学院 > MySql教程 > 正文

php-即使有错误,PDO错误代码也总是00000

发布时间:2021-02-25 08:29 所属栏目:[MySql教程] 来源:网络整理
导读:我正在运行PHP 7.2.16 不确定启动时,即使有错误,PDO errorCode()或errorInfo()[0]现在总是显示00000 $pdo = new \PDO('mysql:host=localhost;dbname=mydb','root','pwd');$sth = $pdo-prepare('select now() and this is a bad SQL where a - b from c');$

我正在运行PHP 7.2.16

不确定启动时,即使有错误,PDO errorCode()或errorInfo()[0]现在总是显示00000

$pdo = new \PDO('mysql:host=localhost;dbname=mydb','root','pwd');
$sth = $pdo->prepare('select now() and this is a bad SQL where a - b from c');
$sth->execute();
$row = $sth->fetchAll();
$err = $sth->errorInfo();
echo $sth->errorCode();
print_r($row);
print_r($err);

结果如下:

00000Array
(
)
Array
(
    [0] => 00000
    [1] => 1064
    [2] => You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'a bad SQL where a - b from c' at line 1
)

但是,我只是做了一个新测试,通过删除$sth-> fetchAll()或在此行之前获取错误,可以正确显示:

Array
(
    [0] => 42000
    [1] => 1064
    [2] => You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'a bad SQL where a - b from c' at line 1
)

OK-解决方案是:

get the error code immediately after execute() and before any fetch

最佳答案 我使用PHP 7.1.23测试了以下代码:

$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES,true);
$sth = $pdo->prepare('select now() and this is a bad SQL where a - b from c');
if ($sth === false) {
  echo "error on prepare()\n";
  print_r($pdo->errorInfo());
}
if ($sth->execute() === false) {
  echo "error on execute()\n";
  print_r($sth->errorInfo());
}

输出:

error on execute()
Array
(
    [0] => 42000
    [1] => 1064
    [2] => You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a bad SQL where a - b from c' at line 1
)

然后,我测试了相同的代码,除非禁用了仿真的prepare:

$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES,false);

输出:

error on prepare()
Array
(
    [0] => 42000
    [1] => 1064
    [2] => You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a bad SQL where a - b from c' at line 1
)

Fatal error: Uncaught Error: Call to a member function execute() on boolean

故事的道德启示:

>使用模拟的准备好的语句时,prepare()是空操作,并且错误会延迟到execute()为止.我建议禁用模拟的prepare,除非您使用的数据库不支持prepared语句(我不知道任何RDBMS产品的任何当前版本都不能执行真正的prepared语句).
>在prepare()上检查错误时,请使用$pdo-> errorInfo().
>在execute()上检查错误时,请使用$stmt-> errorInfo().

【免责声明】本站内容转载自互联网,其相关言论仅代表作者个人观点绝非权威,不代表本站立场。如您发现内容存在版权问题,请提交相关链接至邮箱:bqsm@foxmail.com,我们将及时予以处理。

网友评论
推荐文章