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.<
If you only use MDB2 for MySQL, you can replace it and keep majority of the functions with MDBDid: http://azure-dev.kiao.net/648-mdb2
You will only have little code to adapt.