Zeev,
On 8/23/05, Zeev Suraski <[EMAIL PROTECTED]> wrote:
> >"Real" anonymous functions (as in, closures) should be able to capture
> >variables from its lexical environment, e.g.:
>
> create_function() accepts a string, and that string is constructed with
> full access to the lexical scope of the creating function, so I'm not
> exactly sure how it's different. My ML/LISP memory fails me.
It certainly does not appear to be that way in PHP 4, in the
supposedly equivalent snippet:
function adder($a) {return create_function('$b', 'return $a+$b;');}
..$a is not accessible from inside the anonymous function. This is the
reason Stanislav put the content of $a into the code string (and
probably the reason he chose adder() instead of index() for his
"counter-example" ;).
> Since when do we consider moving towards LISP a good thing? :)
FWIW, I'm merely explaining the problem, not giving any opinion (too
afraid of Derick ;).
Cheers,
Michael
PS: Common Lisps get the garbage collection right, though! ;)
--
PHP Internals - PHP Runtime Development Mailing List
To unsubscribe, visit: http://www.php.net/unsub.php
