Re: [PHP] Anyone who can help me making a loop of this?

[Richard Lynch]

The "easiest" way to do that kind of output is "recursion"

It's a kind of iteration/looping thing where a function calls itself.

Sample:

function fact($x){
    if ($x == 0){
        return 1;
    }
    else{
        return $x * fact($x - 1);
    }
}

Basically the function eats itself rather like those Russion porcelain dolls
nestled inside each other.

It's easier to "reverse" your data structure to get it to work though:

$tingtang[0] = array(1, 7);
$tingtang[1] = array(2, 4);
$tingtang[2] = array(3);
.
.
.

IE, each tingtang knows its "children", rather than the parent.

In your case it would be something like:

function tingtang($tt, $depth = 0){
    global $tingtang;
    echo str_repeat("&nbsp;", $depth * 4), "tingtang$tt<BR>\n";
    while (list(,$child) = each($tingtang[$tt])){
        tingtang($child, $depth+1);
    }
}
tingtang(0);

Note:  Recursion has an overhead at each function call -- So very "deep"
trees can become performance problems.

For a much more in-depth look at this sort of thing, check out the rather
long threads about "forums" and "recursion" in the PHP Mailing List
archives.  (Probably back in version 3 archives, actually)

--
Visit the Zend Store at http://www.zend.com/store/
Wanna help me out?  Like Music?  Buy a CD: http://l-i-e.com/artists.htm
Volunteer a little time: http://chatmusic.com/volunteer.htm
----- Original Message -----
From: Christian Sakshaug <[EMAIL PROTECTED]>
Newsgroups: php.general
Sent: Thursday, January 25, 2001 12:34 PM
Subject: [PHP] Anyone who can help me making a loop of this?


> Anyone who can help me making a loop of this?
>          http://www.sakshaug.net/phps/loop.txt
>
> I have tried many things, but I can't get it perfect...
>
>
>
>
>
> Best Regards, Christian Sakshaug
> --
> Email: [EMAIL PROTECTED]
> Web:   www.sakshaug.net
> Tel:     +47 913 95 618
>
>
>
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
> To contact the list administrators, e-mail: [EMAIL PROTECTED]
>


-- 
PHP General Mailing List (http://www.php.net/)
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]