Ghosting PHP functions like in Javascript

Question

Original Question

Since a recent version of php added anonymous functions, is there a way to extend functions? in Javascript I'd do:

var temp = immaFunction;
immaFunction = function(){
  //do some random stuff
  temp.apply(this, arguments);
}

Result

As of 5.3, PHP has first class anonymous functions.
A few points to consider however(will be filling this with more as I mess around with it.):

• You must import any external variables you want to use. (Example 1)

Examples

Example 1:

$foo = "bar";
$fooBar = function() use ($foo){
  echo $foo;
}
$fooBar(); //bar

Answer 1

I believe PHP also has functions as first-class objects. http://en.wikipedia.org/wiki/PHP#Functions

Iznogood is right.

Answer 2

PHP 5.3 supports that link