PHP : Import csv file using field mapping in UI

My requirement is to get a new module developed for eDirectory (directory software in PHP, demo at [login to view URL]). Development of module to import events from a csv file using visual field mapping (like zoho CRM or Campaign monitor does in importing..). User importing the file can map the columns from csv file to database columns in the UI - "Settings" to be added which are selected before starting the import (details will be provided in requirement specifications). - The data from file need to be validated before importing and appropriate error messages to be displayed (details will be provided in requirement specifications). - Once the rows in the import file pass validations, events will be created/updated as per specific business logic and settings - Once successful, the summary of import process will be displayed - The data types which need to be supported are date/time, text, drop downs, form specific field like "Categories" etc There is an existing import module in the system which can be helpful for reusing of some logic/functions. This is a complex project which require expertise in PHP and strong experience using jQuery. PLEASE BID ONLY IF YOU ARE CONFIDENT. THIS IS A CRITICAL REQUIREMENT WHICH NEED TO BE COMPLETED AS PER SPECIFICATIONS AND IN THE AGREED TIME