Technical Review of the architecture, design of my web based application

Review the current application and work provide a critical analysis to ensure that the best practices are followed, keeping in mind the future workloads, security and performance required. The application has around 150 tables and is developed in PHP with MySQL as backend. (Codeigniter). We are currently hosted on godaddy and are going to migrate to IBM Softlayer now. We anticipate a week to ten days of your effort.