Hi,
Installed php 5.6 NTS VC11 and php is working. I seem to be unable to load pdo extensions php_pdo_firebird.dll and php_interbase.dll other extensions are being loaded so the extension dit setting in php.ini is correct. The php error log shows the following but the modules are in the correct place.
[13-Jan-2015 13:47:35 Europe/Belgrade] PHP Warning: PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\php56\ext\php_interbase.dll' - Kan opgegeven module niet vinden.
in Unknown on line 0
[13-Jan-2015 13:47:35 Europe/Belgrade] PHP Warning: PHP Startup: Unable to load dynamic library 'C:\Program Files (x86)\php56\ext\php_pdo_firebird.dll' - Kan opgegeven module niet vinden.
in Unknown on line 0
I'm also reading something about placing a fbclient.dll in de php dir but i'm not sure.