Can't find sqlite_open

Hello, I have a script that is calling sqlite_open, however, sqlite_open can't be found on my systems. I'm running RHEL5 and I get the following relevant output from php -i: PDO support => enabled PDO drivers => odbc, sqlite pdo_sqlite PDO Driver for SQLite 3.x => enabled PECL Module version => 1.0.1 $Id: pdo_sqlite.c,v 1.10.2.6 2006/01/01 12:50:12 sniper Exp $ SQLite Library => 3.3.6 From searching around, it seems like there is a PDO version, which looks to be enabled here, and a older version, which would provide sqlite_open. Is that correct? Thanks!