Installation

To enable Firebird/InterBase support configure PHP
–with-interbase[=DIR] ,
where DIR is the Firebird/InterBase base install directory, which
defaults to /usr.

Note: Note to Win32/Win64
Users

In order for this extension to work, there are
DLL files that must
be available to the Windows system PATH.
For information on how to do this, see the FAQ entitled “How
do I add my PHP directory to the PATH on Windows“. Although
copying DLL files from the PHP folder into the Windows system
directory also works (because the system directory is by default in
the system’s PATH), this is not
recommended. This extension requires the
following files to be in the PATH:
fbclient.dll,gds32.dll

If you installed the Firebird/InterBase database
server on the same machine PHP is running on, you will have this
DLL already and fbclient.dll,gds32.dll
(gds32.dll is generated from the installer for legacy applications)
will already be in the PATH.