<?php
include("Tree.inc.php");
/*
$ddata=array("testkey"=>"testcontent");
$null=null;
$tree = new Tree($ddata,$null);
$node=&$tree->addChild($ddata);
$tmp=&$tree->addChild($ddata);
$tmp->delete();
$tmp=&$tree->addChild($ddata);
$cnode=&$node->addChild($ddata);
echo "<pre>";
print_r($tree->getChildrenIds());
echo "</pre>";
*/
//create a root node by passing a variable with value null,
//returns a reference to the root node
$null = null;
// generate a new tree,
// the root elements are identified by null value
// there is no data (second parameter)
$tree = new Tree($null);
// another possibility is to hand over a reference to a parent
// always use references (&)!
$node = &$tree->addChild(array("key0"=>"Home"));
// create another node as subnode of $node
$subnode = &$node->addChild(array("key0"=>"Home sub1"));
$subnode = &$node->addChild(array("key1"=>"Home sub2"));
// create another node as subnode of root node
$node = &$tree->addChild(array("key1"=>"Work"));
$subnode = &$node->addChild(array("key0"=>"Work sub1"));
$subnode = &$node->addChild(array("key1"=>"Work sub2"));
$dummydata = array("dummykey"=>"dummyvalue");
// data load may be anything, here we use the dummydata array
$subsubnode = &$subnode->addChild($dummydata);
// some information about the node:
echo 'the added node has the ID: '.$subsubnode->getId().'<br>';
// lets print the level :
echo ' created node is on level: '.$subsubnode->getLevel().'<br>';
// path
echo 'path to it from root node is (Array of ids): ';
print_r($subsubnode->getPath());
echo '<br>';
//get the parent
$parent=&$subsubnode->_parent;
// get the root node (reference!)
$rootnode=&$subnode->getRoot();
// have a look on the structure
echo '<h1>Tree structure</h1>';
echo '<pre>';
$rootnode->echoStructure();
echo '</pre>';
echo 'delete a node (and child nodes!), path to it from root node is: ';
print_r($subnode->getPath());
$subnode->delete();
echo 'the new structure: ';
echo '<pre>';
$rootnode->echoStructure();
echo '</pre>';
?>
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