Comment 4 for bug 178906

That incorrect, as far as I know. Upstream PHP does support SQLite3 -- at least for current stable versions of PHP -- via PDO, as indicated in the documentation: http://us.php.net/manual/en/ref.pdo-sqlite.php

I believe that a "classic" interface to SQLite3 is unsupported simply because unlike other RDBMSs, SQLite3 didn't have an existing legacy interface that had to be maintained for compatibility's sake at the time of its implementation as a driver for PDO, which was intended to become the standard means of interfacing with RDBMSs in PHP. That is, however, primarily inference on my part.

Additionally, your bug appears to be different from mine. My bug does not pertain to any SQLite3 extension; it pertains to the SQLite3 driver for PDO not being installed unless the SQLite2 package is installed as well.