difference between mongodb.so and mongo.so

Question

I noticed that the Mongodb driver installation doc shows different extension name for Mongodb driver:

extension=mongo.so; another one shows extension=mongodb.so -- what's the difference?

http://php.net/manual/en/mongodb.installation.manual.php

Answer 1

mongo.so is the filename for the deprecated Mongo PHP extension, mongodb.so is the filename for the newer Mongodb PHP extension.

Be wary of any guides referencing the extension without the db bit - they are likely referring to the deprecated extension and could well be incorrect.