Thanks guys, I do have php-pdo installed, but there must be something else still missing.
I have a snippet of test code that calls sqlite_open and sqlite_query functions, and they throw errors:
PHP Fatal error: Call to undefined function sqlite_open() in /var/www/html/test/sqlite.php on line 2 PHP Fatal error: Call to undefined function sqlite_query() in /var/www/html/test/sqlite.php on line 3
Again, thanks for the help this far.
Andrew