由于“双端口"，PHP PDO初始化失败. -未捕获的PDOException:SQLSTATE [HY000] [2002]

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问题描述

我收到此错误

请注意地址中的双"端口: localhost:3306:3306

Notice the "double" port in the address: localhost:3306:3306

xxDb.php line 32看起来像这样:

xxDb.php line 32 looks like this:

$db = new PDO('mysql:host='.DB_HOST.';dbname='.DB_NAME.';charset=utf8', DB_USER, DB_PW, array( PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8" ));

转储DB_HOST会导致localhost:3306.

dumping DB_HOST results in localhost:3306.

在连接初始化期间，我看不到第二个端口部分3306明显来自何处.任何帮助都将受到高度赞赏.

I can not see where the second port part 3306 comes from which obviously exists during the connection initialization.Any help is highly appreciated.

推荐答案

showdev的评论正确，即PDO DSN不允许使用host:port语法.

showdev's comment is correct that the PDO DSN does not allow host:port syntax.

如果CMS在控件之外定义DB_HOST，则不能直接使用该常量.但是您可以从中提取信息.

If your CMS is defining DB_HOST outside of your control, you can't use that constant directly. But you can pull information out of it.

$host_port = preg_replace('/:(\d+)/', ';port=${1}', DB_HOST);
$db = new PDO("mysql:host={$host_port};dbname=".DB_NAME.";charset=utf8",
    DB_USER, DB_PW, array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));

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