creating lists

[andreiga]

Does anyone know how can I make a list (or simulate) in PHP?
In C++ is something like that:

class NODE
{
NODE parentNode;
NODE childNode;
}

As far as I can see PHP does not support defined class objects in a class.
I need this so I can make a xml tree in memory where I can add, remove or modify the nodes.
I can't use DOMXML extension because my site administrator didn't add it and he said it won't do it.

Thanks in advance

[Weedpacket]

Make every node a list object.

class List{
  var $parent, $child;
  var $otherstuff

  list functions.

where $parent and $child would be set to be either null or Lists.

[ednark]

you may want to go to pear.php.net and search for XML_tree....
they have something that you can use...

you want to read this about [man]references[/man] in php... not exactly pointers... but you can do this...

which is just furthering what Weedpacket suggests

<?php

class Node
{
    var $next;
    var $last;
    var $data;

function Node( $data='' )
{
    $this->next = NULL;
    $this->last = NULL;
    $this->data = $data;
}

}

$root = new Node( 'I AM THE ROOT' );

$root->next = new Node( 'A' );
$root->next->next = new Node( 'B' );
$root->next->next->next = new Node( 'C' );
$root->next->next->next->next = new Node( 'D' );
$root->next->next->next->next->next = new Node( 'E' );

header("Content-type: text/plain");

unset($node);
$node = $root;
while ( $node !== NULL ) {
    $node->data .= ' : Been Here 1';
    $node = $node->next;
}

$node = &$root;
while ( $node !== NULL ) {
    $node->data .= ' : Been Here 2';
    $node = &$node->next;
}

unset($node);
$node = $root;
while ( $node !== NULL ) {
    $node->data .= ' : Been Here 3';
    $node = $node->next;
}

unset($node);
$node = $root;
while ( $node !== NULL ) {
    echo "This node's data = '{$node->data}'\n\n";
    $node = $node->next;
}
?>