PHP Event Calendar

I require an event scheduling web application written. It must use only php, javascript, JSON, Ajax and MySQL. Other open source libraries should be OK if you want to use them but I would need to verify the license terms. One possibility is to customize Google Calendar. It is very important that the application be responsive. That is, it should look and function well on any common web browser of any size on any device. As this is an Internet application, security should be the utmost concern. The greatest care must be undertaken to prevent SQL injection and other security vulnerabilities. Each table requires an additional field called company_id which identifies the calendar. This software will be used by many people at many companies but each company should only ever see their own data. On login the user must also enter their company_id which would be saved in a cookie and auto-filled in if the cookie is set. This application should perform very similar to the existing Event Manager software for Windows available at [login to view URL] One exception is the reporting screen which is not required to complete. Bear in mind that this screen will be added in the future so make any necessary accommodations for that fact. Other exceptions: Main screen -Save calendar as HTML function -Style functions -Change database function Manage Contacts screen -Import/Export contacts functions Options Screen -Database options -Email options (just use php email to send emails) -Enable Security and Force Login options of Security Tab. These options should be activated at all times. Note that the Windows software is in a buggy beta state. The software you build should not replicate the bugs, just the intended features. If you think you can make it look better or act better I would be open to your ideas. In the attached file you will find the MySQL database script that the web software must conform to. No other additional fields can be added unless agreed to by myself. Also attached is a document (TMS TPlanner) that explains how the database fields function. See the section "Database requirements" for details. All other database fields are explained in the manual which can be found here: [login to view URL] Colors values stored in the database must be in Delphi TColor format. The method to convert them to HTML (Hex) can be found here: [login to view URL]