Paul van Haren wrote:
> OK guys, thanks for all your inputs.
>
> Based on your guidance, I have tested the following code with a
> series of variations:
>
> class foobar {
> function bar2 () {
> echo "Yep, in bar2() right now\n";
> }
>
> public function foo2 () {
> $a = "bar2"; // Experiment 0
> $a(); // Fatal error
> }
> }
>
> And the variations:
> $a = "bar2"; // Experiment 0
> $a(); // Fatal error: Call to undefined function bar2()
>
> $a = "foobar::bar2"; // Experiment 1
> $a(); // Fatal error: Call to undefined function bar2()
>
> $a = "bar2"; // Experiment 2
> eval($a."();"); // Fatal error: Call to undefined function bar2()
>
> $a = "foobar::bar2"; // Experiment 3
> eval($a."();"); // Works but far from elegant
>
> $a = "bar2"; // Experiment 4
> $this->$a(); // Works fine
>
> $a = "bar2"; // Experiment 5
> self::$a(); // Works fine
>
> So, I have a working solution right now. But I still don't understand the
> essence of the differences between experiment #1 and #4. Also, I don't
> understand the need to specify the class name in experiment #3, coming
> from #2. Functions bar2() and foo2() are part of the same class foobar,
> and I would assume that the name 'bar2' would be in scope of the function
> foo2.
your assumptions and php's reality differ. symbol names resolution is never
tired in the class scope.
$a = "foobar::bar2";
$a();
this is trying to call a function called "foobar::bar2", which given that
you cant do (parse error):
function foobar::bar2() {}
whatever munged error message you get regarding 'bar2()' not existing,
the fact remains that 'variable' function name functionality has no concept
of class scope, the T_PAAMAYIM_NEKUDOTAYIM is not recognized. never has been,
probably never will be.
class foo {
function bar1() {
$a = "foo::bar2";
call_user_func(explode("::",$a));
}
static function bar2() {
echo __METHOD__,"\n";
}
}
$foo = new foo; $foo->bar1();
having no idea what it is that your actually trying to achieve, it's hard
to tell whether any percieved limitation is justified.
you might consider taking a look at reflection:
http://nl2.php.net/reflection
>
> BTW: I'm running PHP v5.2.0-8 build and distributed by Debian (etch1).
>
> Thanks again and regards, Paul.
>
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