Hello Friends,

I was thinking about how php scripts creator know if a website use thier onw php script , i mean when someone use a pirated copy of any php script
the creator of that script will know, so HOW

i've asked some people, and they said "it must have a callback functions"

so what is the callback function and how does it works ?

i think it is more better to save your work more than encryption tools

thanks in advance