UPS XML Shipping Tool PHP Function Library is a series of PHP functions that enable your web application to ship, confirm, and void shipments via UPS's XML servers. These functions will assist you in rapidly developing your UPS shipping web application. You can use these functions within your application to: Generate UPS shipping labels to be printed on thermal or laser printers. Automate your shipping with your database driven web application. Eliminate duplicate data entry and human error in your shipping process.