To include RDBMS Linter support into dbx extension you should do
the following:

1) Obtain dbx extension source texts (http://pecl.php.net/package/dbx).
2) Copy files dbx_linter.c and dbx_linter.h into the directory containing
the extension source files.
3) Update file dbx.c according to instruction contained in file 
howto_extend_dbx.htm (in the extension source files directory).
4) Make dbx extension.

A library php3(4,5)_linter.dll (libphp_linter.so) must be loaded to allow working with
RDBMS Linter using dbx extenssion (See documentation for linter php interface).

The following line establishes a connection to Linter:

if (!($link = dbx_connect(DBX_LINTER, "", "", "SYSTEM", "MANAGER")))
  die("Error in dbx_connect");

or (if you connect to a remote database server named "HOST1"):

if (!($link = dbx_connect(DBX_LINTER, "HOST1", "", "SYSTEM", "MANAGER")))
  die("Error in dbx_connect");
