IIS+PHP 7 +Firebird

I am trying to configure IIS+PHP 7 + firebird. IIS and PHP are working fine but when I try to connect to a firebird db it shows this message: "Could not connect to localhost: We were unable to use the Firebird database because the ibase extension for PHP is not installed. Check your [login to view URL] to see how you can enable it. Check out the documentation to see how to install the extension." I have removed the semicolon of: "extension=[login to view URL]" I have added the php dir to the "Windows PATH" but I keep getting the same error. I need somebody to solve this via teamviewer.