64 bit Microsoft Drivers for PHP 5.6 for SQL Server

Hello everyone,

Can anyone please tell where to find the official release of "64 bit Microsoft Drivers for PHP 5.6 for SQL Server" (php_sqlsrv_56_ts.dll and php_pdo_sqlsrv_56_ts.dll - both 64 bit).
I searched for it but couldn't find it anywhere.
The following link contains the official 32 bit drivers:
https://www.microsoft.com/en-us/download/details.aspx?id=20098

• Version 3.2 supports PHP 5.6, 5.5, and 5.4 on Windows

Any help would be appreciated.

Thanks,

Sam