NYCPHP Meetup

[David Krings]

On 7/16/2010 22:57, John Campbell wrote:
> On Fri, Jul 16, 2010 at 10:21 PM, David Krings<ramons at gmx.net>  wrote:
>> Uhm, for the ones like me who have no clue what this means, any pointers
>> available that explain closures?
>
> You can read about closures until you are blue in the face.  The first
> thing you have to grock is first-class functions.  Which basically
> means a variable can be a function.  We normally think of variables as
> "data", but there is no reason you can't store a procedure in a
> variable.  Once you understand that functions are just another type of
> variable, then you can write functions that create other functions.
> e.g. you can return a function from a function.  The following code
> illustrates the concept, and is valid php 5.3

Ah, thanks for the hint. I know understand Hans' questions as well, such as 
why the heck would one want to use that? Then again, why not. Not using it is 
also valid php 5.3.

David