How can I use the latest Berkeley DB with SQL API in PHP app?

Hi,
I'm a PHP developer and I already use Berkeley DB in my applications using the [DBA Functions|http://www.php.net/manual/en/ref.dba.php] . I'm very interested in the latest Berkeley DB release. How can I write a PHP program that uses the SQL API of the latest Berkeley DB release?

Hi Kurt,
I'm not a PHP expert (far from it), but the simplest way to get started with the Berkeley DB SQL interface is to run Berkeley DB's <tt>configure</tt> script with the <tt>--enable-sql_compat</tt> flag. This will create a library called <tt>libsqlite3.so</tt> that you can use as a drop-in replacement for SQLite at the API level. Database files still need to be converted with a SQLite <tt>.dump</tt> followed by a <tt>.read</tt> with the <tt>dbsql</tt> tool.
This should then allow the existing PHP driver and application code to switch over to Berkeley DB without any code changes by setting <tt>LD_LIBRARY_PATH</tt> to find the Berkeley DB version of <tt>libsqlite3.so</tt> ahead of SQLite. Note that any other code that relies on SQLite will also run against Berkeley DB with this configuration, which can cause problems if the system libraries use SQLite (for example, on Mac OS X). For that reason, a better long term solution would be for the PHP SQLite driver to have a mode where it loads <tt>libdbsql.so</tt> rather than <tt>sqlite3.so</tt>.
I hope this helps, please let us know how you go because I'm sure lots of other PHP developers will be interested in the answer.
Regards,
Michael Cahill, Oracle Berkeley DB.

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