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

Iznogood · Accepted Answer · 2010-08-19 20:26:30Z

3

PHP 5.3 supports that link

answered Aug 19, 2010 at 20:26

Iznogood

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2 Comments

Rixius Over a year ago

One problem if you copy an existing function, it var_dump's to a string of the functions name.

ircmaxell Over a year ago

It does not support the same syntax exactly. To use local variables, you need to add the use clause: $func = function() use ($temp) { $temp->something(); }. Unlike JS, the functions do not inherit the local scope by default (You need to "bind" them in using the use clause to retain access)...

user201788 · Accepted Answer · 2010-08-19 20:26:25Z

0

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

Iznogood is right.

answered Aug 19, 2010 at 20:26

user201788

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