PHP Startup: Unable to Load Dynamic library ‘C:\PHP\ext\php_pdo_mysql.dll – The specified module could not be found

I was getting this error from one of the Windows Server with IIS, after looking for several source from the Internet, I found this solution.

The error is like detail below,

PHP Startup: Unable to Load Dynamic library ‘C:\PHP\ext\php_pdo_mysql.dll – The specified module could not be found.

Solution,
Copy the ext\libmysql.dll file from PHP installation folder to /Windows/System32 folder.