My first PHP app was an invoicing application. It is ~3500 lines of php in a single file. Most of which is a few heredocs with javascript to be in lined on the

My first PHP app was an invoicing application. It is ~3500 lines of php in a single file. Most of which is a few heredocs with javascript to be in lined on the client side. I haven't touched the code in 10 years. I still use it for my freelance invoicing.