I'm running MicroApache (http://microapache.amadis.sytes.net) on Windows XP and would like to use SQLite 3 databases.

The PHP version is 5.2.9-2.

My MicroApache version has SQLite 2 support through 2 lines in the php.ini:
extension=php_pdo.dll
extension=php_sqlite.dll

I test whether the extension works in 3 ways:
1. phpinfo()
2. extension_loaded() and get_loaded_extensions()
3. using sample code that var_dump()s the constant SQLITE3_NUM (should be the integer 2) and tries to create a database (error: class 'SQLite3' does not exist)

Things I have tried (if I can remember them all):
1. copied php_sqlite3.dll from a full installation of PHP and added "extension=php_sqlite3.dll" to php.ini
-> error "Procedure entry point gc_remove_zval_from_buffer was not found in php5ts.dll"
2. compressed the DLL with UPX (like the other DLLs of MicroApache seem to be)
-> does not display an error on start, nor in the log file, but does not work
3. tried various things with php.ini
- created a section "[sqlite3]"
- prefixed "sqlite3." to "extension_dir=." and "extension=php_sqlite3.dll"
- ...
4. tried to use PDO, it says it 'could not find driver'

Who can help me get SQLite 3 to work?