Well, it's a rather simple bit of logic.
First, we define $foo and load it with NULL so that it is available for
referencing. Next, in terms of program logic, we create a closure with a
lexical ('use') variable of a reference to $foo, which is then assigned
to $foo. Thus, the reference to $foo in the closure declaration now
points to the closure itself.
Recursion is always complicated :P
Thanks,
Justin Martin
Peter Danenberg wrote:
> Quoth Justin Martin on Pungenday, the 30th of Discord:
>> Apparently it works as such:
>>
>> $foo = NULL;
>> $foo = function($foo) use (&$foo) {
>> ...
>> }
>>
>> Still rather hackish, but better than globals I suppose?
>
> Heh; amazing. I'm not going to pretend to comprehend this hack; but
> I'll use it, nonetheless.
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