This is a simple technique, but I wanted to capture it here in the event that I ever had a use for it. Let’s assume that you have the name of a function as a variable in PHP and you want to call that function using the variable. Here is what you do.
1 2 3 4 5 6 7 | function myFunc () { print "Welcome!" ; } $temp = "myFunc" ; $temp () ; |
That’s pretty easy stuff. You can extend this approach to PHP objects. Let’s say you have an instance of an object called $myObj and it has a public function named myFunc that takes one string parameter. Inside another object you could do something like this.
1 2 3 | $temp = "myObj" ; global $$temp ; $temp->myFunc ("Welcome!") ; |
That’s all there is to it. Without doing much research, it seems like this could be useful for a messaging system where the object registers to receive a message by providing its name and the message pump signals the object through a known method defined in an interface or a base class. This may not be the best approach, but it should work for a simple implementation.
