We need a PHP script to integrate an API on our site. The API controls a telecom numbering server. It operates as follows: * collect client details (5 fields) via our site. * authenticate our site with the numbering server. * request and activate new number from numbering server. * pass client details to numbering server. * take new number from numbering server and pass it back to the client via our site. * provide facility to client to login to our site and change destination of issued number in the future. I attach a pdf which provides the API instructions, so you can get a feel for what's involved.