Hi,

Is it possible for an array to point a function:

Asignmanet

$ArrayPointer = $this->MyFunction;

Invoke:

$ArraryPointer();

On Tue, Apr 8, 2008 at 12:00 AM, hce <webmail.hce@gmail.com> wrote:

> Hi,
>
> Is it possible for an array to point a function:
>
> Asignmanet
>
> $ArrayPointer = $this->MyFunction;
>
> Invoke:
>
> $ArraryPointer();


i would recommend you investigate variable functions

1. http://www.php.net/manual/en/functio...-functions.php

so you dont exactly get functional language behavior; but you can 'pass
around a function'. so for example; if you have
<?php
function someFunc() {}
/**
* then you can pass around strings that refer to it; as in
*/
$someFuncPointer = 'someFunc';

/**
* then you can call it using the variable function construct; as in
*/
$someFuncPointer(); // invoking someFunc()
?>

you can pass parameters to such an invocation; as in
<?php
$someFuncPointer(1, $b, $yaddaYadda);
?>

and it works for object instances
<?php
class MyClass { function doStuff() {} }
$b = new MyClass();
$b->doStuff();
?>

and it works for static object method calls
<?php
class OtherClass { static function doMoreStuff() {} }
$b = 'doMoreStuff';
?>

you can also store the class name or instance in variables and it still
works. here the output of a little php -a session

<?php
class M { static function b() {} function n() {} }
$m = 'M';
$b = 'b';
$m::$b();
$n = new M();
$n->b();
$n->$b();
?>

and thats just the tip of the iceberg! there is also the php psuedo type
callback; and there are some other functions that are pertinent.
call_user_func(); // very similar to variable functions
call_user_func_array()

-nathan

On Tue, 2008-04-08 at 14:00 +1000, hce wrote:
> Hi,
>
> Is it possible for an array to point a function:
>
> Asignmanet
>
> $ArrayPointer = $this->MyFunction;
>
> Invoke:
>
> $ArraryPointer();

No, you can't do what you've done above. What you can do is...

<?php

$ptr = array( 'obj' => &$this, 'method' => 'MyFunction' );
$ptr['obj']->$ptr['method']();

?>

Cheers,
Rob.
--
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Application and Templating Framework for PHP