服务端脚本语言php实现，FreshInvoice是用php实现的一个简易的php的发票系统，用户可以再改系统下对发票进行增、删、改、查等相关的操作,可以作为初学者例子代码-Server-side scr ipting language php realized, FreshInvoice is achieved with a simple php php invoice system, the user can then change the system for invoices to ad