CSV upload, once uploaded to a temp folder overwrite the existing database

[eluser]the_unforgiven[/eluser]
Database structure is as follows:

Code:

CREATE TABLE IF NOT EXISTS `wc_program_temp` (
  `JobRef` varchar(11) DEFAULT NULL,
  `Area` varchar(255) DEFAULT NULL,
  `Parish` varchar(255) DEFAULT NULL,
  `AbbrWorkType` varchar(255) DEFAULT NULL,
  `WorkType` varchar(255) DEFAULT NULL,
  `Timing` varchar(255) DEFAULT NULL,
  `TrafficManagement` varchar(255) DEFAULT NULL,
  `Location` varchar(120) DEFAULT NULL,
  `Duration` varchar(15) DEFAULT NULL,
  `Start` varchar(255) DEFAULT NULL,
  `Finish` varchar(255) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;