php-array-tree
arrayTree.php
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<?php
class Tree {
/**
* @desc array with elements
* @type array
* @access private
**/
var $aElements;
/**
* @desc backbone array
* @type array
* @access private
**/
var $result;
/**
* Register the levels, to calculate the max level for example
*
* @var array
*/
var $levels;
/**
* The elements ordered by level
*
* @type array
*/
var $lElements;
/**
* @desc constructor method
* @param
* @access public
* @return void
**/
function Tree(){
$this->aElements = array();
$this->lElements = array();
$this->result = array();
$this->levels = array();
}
/**
* Add an element to the array
*
* @param numeric $iId (The id of the element)
* @param array $properties (All kind of extra properties)
* @param numeric $iParentId (The parent id)
**/
function addNode($iId, $properties, $iParentId = 0){
$this->aElements[$iId] = array('properties' => $properties, 'parent' => $iParentId);
}
/**
* Gets the parens ids
*
* @param string/numeric $iId
**/
function getParents($iId){
$dad = $this->aElements[$iId]['parent'];
$parent[] = $dad;
while($dad){
if($dad = $this->getParent($dad)){
$parent[] = $dad;
}
}
$this->aElements[$iId]['parents'] = $parent;
return $parent;
}
/**
* Get the parent ID
*
* @param string/numeric $iId
* @return The parent ID or false
**/
function getParent($iId){
if(!empty($this->aElements[$iId]['parent'])){
return $this->aElements[$iId]['parent'];
}else{
return false;
}
}
/**
* Counts the level depth
*
* @param string/numeric $iId
* @return numeric
**/
function level($iId){
$level = count($this->getParents($iId));
$this->aElements[$iId]['level'] = $level;
$this->levels[$iId] = $level;
if(!$this->getParent($iId)){
$this->lElements[1][$iId] = $this->aElements[$iId];
}else{
$this->lElements[$level+1][$iId] = $this->aElements[$iId];
}
return $level;
}
/**
* Returns the max level.
*
* @return number with the max level depth
**/
function maxLevel(){
$max = 0;
foreach($this->levels as $level){
if($level > $max){
$max = $level;
}
}
return ($max+1);
}
/**
* Generates the tree Array
*
* @return array (within the tree array)
*/
function getArray() {
foreach($this->aElements as $iId => $element){
$this->level($iId);
}
foreach($this->lElements[1] as $id => $element){
$this->result[$id] = '';
}
for($i=$this->maxLevel();$i>=1;$i--){
if(isset($this->lElements[$i]) and is_array($this->lElements)){
foreach($this->lElements[$i] as $id => $element){
$parent = $this->getParent($id);
if($parent != 0){
// Als de dochter een parent heeft
$this->result[$id]['properties'] = $this->aElements[$id]['properties'];
if(!isset($this->result[$id])){
// Als de pagina nog niet bestond
$this->result[$parent]['childs'][$id]['properties'] = $element['properties'];
}else{
// De pagina bestond dus wel al
$this->result[$parent]['childs'][$id] = $this->result[$id];
}
// Overige verwijderen
unset($this->result[$id]);
}else{
$this->result[$id]['properties'] = $this->aElements[$id]['properties'];
}
}
}
}
return $this->result;
}
function getLElements(){
return $this->lElements;
}
}
?>
class Tree {
/**
* @desc array with elements
* @type array
* @access private
**/
var $aElements;
/**
* @desc backbone array
* @type array
* @access private
**/
var $result;
/**
* Register the levels, to calculate the max level for example
*
* @var array
*/
var $levels;
/**
* The elements ordered by level
*
* @type array
*/
var $lElements;
/**
* @desc constructor method
* @param
* @access public
* @return void
**/
function Tree(){
$this->aElements = array();
$this->lElements = array();
$this->result = array();
$this->levels = array();
}
/**
* Add an element to the array
*
* @param numeric $iId (The id of the element)
* @param array $properties (All kind of extra properties)
* @param numeric $iParentId (The parent id)
**/
function addNode($iId, $properties, $iParentId = 0){
$this->aElements[$iId] = array('properties' => $properties, 'parent' => $iParentId);
}
/**
* Gets the parens ids
*
* @param string/numeric $iId
**/
function getParents($iId){
$dad = $this->aElements[$iId]['parent'];
$parent[] = $dad;
while($dad){
if($dad = $this->getParent($dad)){
$parent[] = $dad;
}
}
$this->aElements[$iId]['parents'] = $parent;
return $parent;
}
/**
* Get the parent ID
*
* @param string/numeric $iId
* @return The parent ID or false
**/
function getParent($iId){
if(!empty($this->aElements[$iId]['parent'])){
return $this->aElements[$iId]['parent'];
}else{
return false;
}
}
/**
* Counts the level depth
*
* @param string/numeric $iId
* @return numeric
**/
function level($iId){
$level = count($this->getParents($iId));
$this->aElements[$iId]['level'] = $level;
$this->levels[$iId] = $level;
if(!$this->getParent($iId)){
$this->lElements[1][$iId] = $this->aElements[$iId];
}else{
$this->lElements[$level+1][$iId] = $this->aElements[$iId];
}
return $level;
}
/**
* Returns the max level.
*
* @return number with the max level depth
**/
function maxLevel(){
$max = 0;
foreach($this->levels as $level){
if($level > $max){
$max = $level;
}
}
return ($max+1);
}
/**
* Generates the tree Array
*
* @return array (within the tree array)
*/
function getArray() {
foreach($this->aElements as $iId => $element){
$this->level($iId);
}
foreach($this->lElements[1] as $id => $element){
$this->result[$id] = '';
}
for($i=$this->maxLevel();$i>=1;$i--){
if(isset($this->lElements[$i]) and is_array($this->lElements)){
foreach($this->lElements[$i] as $id => $element){
$parent = $this->getParent($id);
if($parent != 0){
// Als de dochter een parent heeft
$this->result[$id]['properties'] = $this->aElements[$id]['properties'];
if(!isset($this->result[$id])){
// Als de pagina nog niet bestond
$this->result[$parent]['childs'][$id]['properties'] = $element['properties'];
}else{
// De pagina bestond dus wel al
$this->result[$parent]['childs'][$id] = $this->result[$id];
}
// Overige verwijderen
unset($this->result[$id]);
}else{
$this->result[$id]['properties'] = $this->aElements[$id]['properties'];
}
}
}
}
return $this->result;
}
function getLElements(){
return $this->lElements;
}
}
?>
example.php
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<?php
include('arrayTree.php');
$tree = new Tree();
$sql = "SELECT id,titel,parent,menuid FROM paginas ORDER BY menuid";
$res = mysql_query($sql);
while($page = mysql_fetch_assoc($res)){
$tree->addNode($page['id'],$page,$page['parent']);
}
$paginas = $tree->getArray();
echo '<pre>';
print_r($paginas);
echo '</pre>';
?>
include('arrayTree.php');
$tree = new Tree();
$sql = "SELECT id,titel,parent,menuid FROM paginas ORDER BY menuid";
$res = mysql_query($sql);
while($page = mysql_fetch_assoc($res)){
$tree->addNode($page['id'],$page,$page['parent']);
}
$paginas = $tree->getArray();
echo '<pre>';
print_r($paginas);
echo '</pre>';
?>
Ik heb ook een voorbeeld class gemaakt waarmee je deze array kunt uitlezen
readTreeArray.php
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<?php
class printArrayTree {
var $buffer;
var $array;
function printArrayTree(){
$this->array = array();
$this->buffer = '';
}
function make_row($array,$level=0){
foreach($array as $element){
$this->buffer .= '<tr><td>'.$element['properties']['id'].'</td>
<td style="padding-left: '.(15*$level).'px;">'.($level != 0 ? '› ' : '').' '.$element['properties']['titel'].'</td>
</tr>';
if(isset($element['childs']) and is_array($element['childs'])){
$this->make_row($element['childs'],($level+1));
}
}
}
function print_table(){
return '<table width="50%" cellspacing="0">
<tr>
<th>ID</th>
<th>Pagina naam</th>
</tr>'.$this->buffer.'</table>';
}
}
?>
class printArrayTree {
var $buffer;
var $array;
function printArrayTree(){
$this->array = array();
$this->buffer = '';
}
function make_row($array,$level=0){
foreach($array as $element){
$this->buffer .= '<tr><td>'.$element['properties']['id'].'</td>
<td style="padding-left: '.(15*$level).'px;">'.($level != 0 ? '› ' : '').' '.$element['properties']['titel'].'</td>
</tr>';
if(isset($element['childs']) and is_array($element['childs'])){
$this->make_row($element['childs'],($level+1));
}
}
}
function print_table(){
return '<table width="50%" cellspacing="0">
<tr>
<th>ID</th>
<th>Pagina naam</th>
</tr>'.$this->buffer.'</table>';
}
}
?>
En deze gebruik je uiteindelijk dan zo:
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<?php
include('arrayTree.php');
$tree = new Tree();
$sql = "SELECT id,titel,parent,menuid FROM paginas ORDER BY menuid";
$res = mysql_query($sql);
while($page = mysql_fetch_assoc($res)){
$tree->addNode($page['id'],$page,$page['parent']);
}
$paginas = $tree->getArray();
echo '<pre>';
print_r($paginas);
echo '</pre>';
include('readTreeArray.php');
if(count($paginas) >= 1){
$table = new printArrayTree;
$table->make_row($paginas);
echo $table->print_table();
}
?>
include('arrayTree.php');
$tree = new Tree();
$sql = "SELECT id,titel,parent,menuid FROM paginas ORDER BY menuid";
$res = mysql_query($sql);
while($page = mysql_fetch_assoc($res)){
$tree->addNode($page['id'],$page,$page['parent']);
}
$paginas = $tree->getArray();
echo '<pre>';
print_r($paginas);
echo '</pre>';
include('readTreeArray.php');
if(count($paginas) >= 1){
$table = new printArrayTree;
$table->make_row($paginas);
echo $table->print_table();
}
?>