Codeigniter CLI mode calling firebird database

How do you call php from CLI? Exactly what command did you run?

I think you have more thane one php version installed and the CLI one is different than you use with your web server. If my assumption is true, then you have to enable interbase extensions in all php version's php.ini...

Run get_loaded_extensions() (http://php.net/manual/en/function.get-lo...nsions.php) to check interbase is loaded.