podio/podio-php — pull request #11 by Antronin (2013-03-17 21:35:34+00:00)
Title: Underscore instead of hyphen

In PHP you cannot use a variable name with a hyphen in it, while PODIO converts spaces to hyphens. With this modification, user can write variable names with underscores instead of hyphen and still PODIO will get these names with hyphens.
It is safe as PODIO does not allow creating fields with underscores in external_ids.