I recently installed a DokuWiki on Ubuntu 12.04 Server Edition. But after adding BlogTNG I only get an Error 500

PHP Fatal error:  Call to undefined function sqlite_open() in /lib/plugins/blogtng/helper/sqlite.php on line 44

After some searching I find out that:

“The plugin creates a blogtng.sqlite file which is currently a SQLite2 database and will not work with sqlite3 installed”¹⁾

but it seems Ubuntu 12.04 no longer has sqlite2.

ii  libaprutil1-dbd-sqlite3          1.3.12+dfsg-3              Apache Portable Runtime Utility Library - SQLite3 Driver
ii  libsqlite0                       2.8.17-7fakesync1build1    SQLite shared library
ii  libsqlite3-0                     3.7.9-2ubuntu1.1           SQLite 3 shared library
ii  php5-sqlite                      5.3.10-1ubuntu3.5          SQLite module for php5
ii  sqlite3                          3.7.9-2ubuntu1.1           Command line interface for SQLite 3

These are the package versions. No v2!

Here I found a solution. A little bit dirty but working. The documentation mostly worked for me only the path for the .so file I had to ajust. Here my documentation perhaps if someone else have the Problem the solution will be found faster.

We are manipulating libraries I think you know: This changes have to be done as root user (or with sudo). And pleas be careful don't damage your installation

You have to get an older sqlite package from a prior Ubuntu.
x64

wget http://security.ubuntu.com/ubuntu/pool/main/p/php5/php5-sqlite_5.3.5-1ubuntu7.11_amd64.deb

x32

wget http://security.ubuntu.com/ubuntu/pool/main/p/php5/php5-sqlite_5.3.5-1ubuntu7.11_i386.deb

After this extract it

cd /tmp
mkdir sqlite
dpkg -x php5-sqlite_5.3.5-1ubuntu7.11_i386.deb sqlite

And copy the library to the others

cp -iv sqlite/usr/lib/php5/20090626+lfs/sqlite.so /usr/lib/php5/20090626+lfs

Now you have to create an ini file witch activates the new module

/etc/php5/conf.d/sqlite.ini

; configuration for php SQLite module
extension=sqlite.so

And finaly restart your apache

service apache2 restart

Now BlogTNG should work.

http://www.chrisge.org/blog/2012-07-11/kurztipp_sqlite_unter_ubuntu_12.04