not sure all the bits you where trying to do.. but function calls::::
function test () {
print_r(func_get_args());
}
test("a","w","C');
more normally...
function test($a,$b=NULL) {
if ($b===NULL) { // tripple equal to make sure that "" != NULL
$b=$a
$a = "id";
}
......
}
test(12);
test("name","fred");
regards
Alan
Pascal Van Hecke wrote:
>Hi,
>
>I was using Torben Nehmer's Wrapper class CArticle
>(http://www.nathan-syntronics.de/midgard/oop/baseclasses/CArticle.html,
>read
>http://www.nathan-syntronics.de/midgard/oop/extending.html
>for backgroundinfo).
>In my own implementation (I actually extend CArticle,
>but that's not relevant here) I wanted to have a
>constructor that would be the equivalent of
>mgd_get_article_by_name($topic_id, $article_name). In
>Torben's CArticle, only the behaviour of
>mgd_get_article($article_id) is mimicked by
>
>new CArticle($article_id);
>
>Now, in another language than PHP, there would be no
>problem creating a second constructor with a different
>signature, thus:
>
>$article = new CArticle($article_id);
>$article = new CArticle($topic_id, $article_name);
>
>making two different constructors. This is not
>possible in php however (well, strictly spoken it is
>possible with Variable-length argument lists, see
>further). The way I solved it now is:
>
>$article_pointer = new CArticle(); // instantiating a
>still empty object with ID 0
>$article_pointer->assign_to_article_by_name($this->topic_id,
>$this->article_id);
>
>with the implementation of
>"assign_to_article_by_name" reading:
>
>function assign_to_article_by_name($par_topic_id,
>$par_article_id)
>{
> $article = mgd_get_article_by_name ($par_topic_id,
>$par_article_id);
> if (!$article)
> {
> $this = false;
> return false;
> }
> $this->_copyMgdData($article);
>}
>
>This is a bit ugly, because if I call
>assign_to_article_by_name on an already filled
>CArticle object, its own content is overwritten by the
>found article in the indicated topic and with the
>indicated name in mgd_get_article_by_name .
>
>Alternatives here:
>PHP does allow for a varying number of parameters, but
>it's a bit ugly again. In the constructor, you could
>test on the number of parameters but this would still
>allow only one implementation with 1 parameter, only
>one implementation with 2 parameters, etc...
>
>Maybe an extra parameter would be better:
>function CArticle ($par_constructortype = "id",
>$par_parameter_array)
>{
> if ($par_constructortype="id")
> {
> ...
> }
> if ($par_constructortype="name")
> {
> ...
> }
>}
>A possible problem with the last implementation is
>that overriding the constructor in an inherited class
>becomes a bit more complex?
>
>Torben, Philipp and other users of the extended
>MidgardClasses, maybe you could give your opinion
>here?
>
>pascal
>
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