Cybersource SOAP TOOLKIT API Install

Currently our existing reservation form is programmed as Simple Order API through Cybersource. Which does not work for php 5.3 We need our current booking form changed to the Cybersource SOAP TOOLKIT API: to work with php 5.3 so that we may update the server for PCI compliance. Currently our form works with php 5.2.17 with these coding abilities. (Please do not break the code) • Check the date (must be a date the tour runs) • If it is an airplane or helicopter tour, the code calls up a weight/height box for filling out. • Field check (some fields are mandatory)• Data is passed to Step 2 • Calculate totals for processing. • Field checks (many fields are mandatory)• • Inserts CC details into DB Table • Sends email of notification of sale Again, our current form works, we just want a new integration using cybersource and SOAP API [login to view URL] Job is immediate.