Is there a place I can find all the extensions of PHP?

Now I'm seeking of php_pdo_mysql.dll version 5.2.5.5,开发者_运维知识库

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?

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:

PDO and all the major drivers ship with PHP as shared extensions, and simply need to be activated by editing the php.ini file:

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.

Looking at this I would have thought that you wouldn't need a DLL at all. From here:

PDO ships with PHP 5.1, and is available as a PECL extension for PHP 5.0; PDO requires the new OO features in the core of PHP 5, and so will not run with earlier versions of PHP.

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.