Description:

The php-dba includes a dynamic shared object (DSO) that adds
gdbm and db4 support to PHP4.

These functions build the foundation for accessing Berkeley DB style
databases. This is a general abstraction layer for several file-based
databases. As such, functionality is limited to a subset of features
modern databases such as Sleepycat Software DB4 support. The behaviour
of various aspects depend on the implementation of the underlying
database. Functions such as dba_optimize() and dba_sync() will do
what they promise for one database and will do nothing for others.

PHP4 is an HTML-embedded scripting language. If you need db4 or
gdbm support for PHP4 applications, you will need to install this
package in addition to the php package.