有没有地方可以找到 PHP 的所有扩展？
现在我正在寻找php_pdo_mysql.dll版本5.2.5.5，
只找到了这个：
http://dllcentral.com/php_pdo_mysql.dll/5.2.5.5/
但是我的zend studio 5.5说它无效！
还有其他地方可以碰碰运气吗？
Now I'm seeking of php_pdo_mysql.dll version 5.2.5.5,
only found this:
http://dllcentral.com/php_pdo_mysql.dll/5.2.5.5/
But my zend studio 5.5 says it's invalid!
Is there any other place I can try my luck?
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评论（4）
Brrr，我真的不会从这样的位置下载二进制文件（可以在系统上做任何他们想做的事情，甚至可能是提供服务的网页）。
从 5.0 开始，PDO 不是默认包含在 PHP 中了吗？
来自 PDO 安装手册：
Brrr, I really wouldn't download binaries (that could do anything they please on the system, and possibly even the web pages that get served) from locations like that.
Isn't PDO included in PHP by default since 5.0?
From the PDO installation manual:
据我所知，pdo 扩展是 php 安装时默认的。
您应该尝试取消注释 php.ini 文件中的包，然后重新加载 apache。
THe pdo extentions come default with php installation as far as I know.
You should try to uncoment the package in your php.ini file and then reload apache.
看看 this 我以为你不需要DLL根本就没有。来自此处：
Looking at this I would have thought that you wouldn't need a DLL at all. From here:
官方二进制文件可以在以下位置找到：
http://windows.php.net/download/
但是，你说你已经有一个 Windows 二进制文件了。仔细看看：您应该已经有了该 DLL。您可能需要重新运行安装程序并选择该扩展。
Official binaries can be found at:
http://windows.php.net/download/
However, you say you already have a Windows binary. Look at it carefully: you should already have that DLL available. Probably, you need to rerun the installer and select that extension.