How to call a function from a string stored in a variable?

Question

I need to be able to call a function, but the function name is stored in a variable, is this possible? e.g:

function foo ()
{
  //code here
}

function bar ()
{
          


        

Answer 1

A few years late, but this is the best manner now imho:

$x = (new ReflectionFunction("foo"))->getClosure();
$x();