I\'ve been using pear packages in php for years. I\'m in the process of upgrading/moving a sites that uses the MDB2 pear package and it has not been updated for PHP 5.3.X.<
I'm going to comment on this, since it's coming up high on Google search results for the problem.
I contacted the lead developer for MDB2, who said:
please check out a copy of MDB2 from SVN, it's fully PHP5.3 compatible, with many performance improvements. I'm currently waiting for some fixes to the new SQL Server driver (Microsoft is working on it this very week), then I'll push a new stable release.
(Edit, 4 years later: This is no longer right, do not do this)