Closures in PHP… what, precisely, are they and when would you need to use them?

Question

So I\'m programming along in a nice, up to date, object oriented fashion. I regularly make use of the various aspects of OOP that PHP implements but I am wondering when might I

Answer 1

Bascially,Closure are the inner functions tat have access to the outer variables and are used as a callback function to anonmyous function (functions that do not have any name).

 

//output captain

//and if we pass variable as a reference as(&$param) then output would be spider man;