2-3 hours php job

Hi, I am looking for a very experienced php, mysql professional to work on a small project for 2-3 hours daily at a mutually acceptable time for approx. 3-4 days. Must be thoroughly experienced with open source scripts specially joomla, drupal, shopping carts like oscommerce etc. and payment gateways. Should be capable to understand, analyze & modifying existing scripts, Good object oriented and database programming skills. Any bids without php coder as first words in the bid would be ignored. Must have sound knowledge and practice of proper documentation following software engineering processes. Would be able to take complete responsibility for Analyzing and designing system independently. It's nice if you are currently employed with a reputed organisation and can spare extra time after normal workng hours and willing to earn extra money. Only individual, no firm.