Question

Can I basically do something like:

register_function_hook('myFunctionHook');

so then when any function is run:

functionA(); //The hook runs myFunctionHook();
anoterFunction(); //The hook runs myFunctionHook();
Class::functionA(); //The hook runs myFunctionHook();

Does such a thing exist?

— Edit —

What I want to do is to get a breakdown of durations of each function. Ie. Performance Tuning. I want to get an idea of what takes all the time without installing xDebug on my Apache server, however I don’t know if it is possible.

Answer 1

No, its not possible the way you like

But You can achieve something close with inheritance.

 class Vehicle {
       function __construct() {
              $this->hookFunction();
       }

       function hookFunction() {
              //
       }
 }

 class Car extends Vehicle {

 } 

 Class Toyota extends Car {

 }

 new Toyota(); // will you hook function
 // this exclude static call to member functions, or other inline functions.