Unlimited hierarchical and tree node output

';

$strRe = '

By passing in simple original data, N types of relationships between nodes can be derived, and a tree-like DOM can be output Note: Please refer to the latest code on git.oschina.net (click the "Source Code Source" link) /** * Output unlimited classification, I wrote it myself~ * * @author binny_w@qq.com * @since 2013-09-24 AM */ /* Usage example*/ /* $arrAll = array( array('id' => 1, 'name' => 'Column classification_1', 'name_en' => 'cat_1', 'parent_id' => 0), array('id' => 2, 'name' => 'Column classification_2', 'name_en' => 'cat_2', 'parent_id' => 0), array('id' => 3, 'name' => 'Column classification_3', 'name_en' => ' cat_3', 'parent_id' => 1), array('id' => 4, 'name' => 'Column category_4', 'name_en' => 'cat_4', 'parent_id' = > 1), array('id' => 5, 'name' => 'Column classification_5', 'name_en' => 'cat_5', 'parent_id' => 2), array ('id' => 6, 'name' => 'Column classification_6', 'name_en' => 'cat_6', 'parent_id' => 4), array('id' => 7, 'name' => 'Column classification_7', 'name_en' => 'cat_7', 'parent_id' => 6), array('id' => 8, 'name' => ; 'Column classification_8', 'name_en' => 'cat_8', 'parent_id' => 7), array('id' => 9, 'name' => 'Column classification_9' , 'name_en' => 'cat_9', 'parent_id' => 6) ); $objT = new TreeList($arrAll); print_r($objT->arrAll); print_r($objT- >arrIdAll); print_r($objT->arrIdChildren); print_r($objT->arrIdSon); print_r($objT->arrIdLeaf); print_r($objT->arrIdRelation); print_r($objT->arrIdRelationSimple); print_r($objT->arrIdRoot); print_r($objT->arrIdBackPath); print($objT->getTable()); print($objT ->getSelect('cat', array(1, 8), true)); */ // !defined('IN_FRAME') && die('404 Page'); class TreeList { /* * * Analyze all possible data */ public $arrAll = array(); // Original data public $arrIdRelation = array(); // Multidimensional relationship with _ID as key name public $arrIdRelationSimple = array(); // Simplification of multi-dimensional relationships based on _ID as key name, used to output tree diagram public $arrIdAll = array(); // Convert original data into an array with _ID as key name public $arrIdSon = array() ; // All parent-child relationships public $arrIdLeaf = array(); // _ID of leaf nodes public $arrIdRoot = array(); // _ID of root nodes public $arrIdChildren = array(); // The descendant_ID of each node public $arrIdBackPath = array(); // Each node goes back to the root public $strItem = '{$strSep}{$name}'; / / Output the structure of the tree /** *Constructor, pass in original data */ public function __construct($arrData) { $this->arrAll = $arrData; $this->processData(); } / ** * Simple tree */ public function getHtml() { return $this->genHtml(); } /** * Use Table to draw trees */ public function getTable() { $this-> strItem = '
{$strSep}{$name}	{$name}	{$name_en}

';

$strRe .= '< tr>

';

$strRe .= $this->genHtml();

$strRe .= '

Structure	Chinese name	English name

';

return $strRe;

}

/* *

* Display

in the drop-down box * example:

* $objTreeList->getSelect('parent_id', 0, false, 'class="span5"', array(0, '≡ as a first-level column≡')) )

*/

public function getSelect($strName = 'tree', $arrValue = array(), $blmMulti = false, $strExt = '', $arrFirst = null) {

!is_array($arrValue) && $arrValue = array($arrValue);

foreach ($this->arrIdAll as $strTemp => $arrTemp) {

$this->arrIdAll[$strTemp]['selected'] = '';

if (in_array($arrTemp['id'], $arrValue)) {

$this->arrIdAll[$strTemp]['selected'] = ' selected="selected"';

}

}

$this->strItem = '{$strSep}{$name}' ;

$strRe = ' $strRe .= ($blmMulti ? ' multiple="multiple"' : '') . (empty($strExt) ? '' : ' ' . $strExt) . '>';

if (is_array($arrFirst) && count($ arrFirst) == 2) {

$strRe .= '

' . $arrFirst[1] . '';

}

$strRe .= $this->getHtml() . '

';

return $strRe;

}

/* ----- The following are private functions for processing data, recursion and loops Like, very complicated! ----- */

private function helpForGetRelation($arrData) {

$arrRe = array();

foreach ($arrData as $strTemp => $arrTemp) {

$arrRe[$ strTemp] = $arrTemp;

if (isset($this->arrIdRelation[$strTemp])) {

$arrRe[$strTemp] = $this->arrIdRelation[$strTemp];

}

if (count( $arrRe[$strTemp]) > 0) {

$arrRe[$strTemp] = $this->helpForGetRelation($arrRe[$strTemp]);

} else {

array_push($this->arrIdLeaf, $ strTemp);

}

}

return $arrRe;

}

private function helpForGetChildren($arrData) {

$arrRe = array_keys($arrData);

foreach ($arrData as $arrTemp) {

$arrRe = array_merge( $arrRe, $this->helpForGetChildren($arrTemp));

}

return $arrRe;

}

private function helpForGetBackPath($str) {

$arrRe = array();

$intTemp = $this-> ;arrIdAll[$str]['parent_id'];

if ($intTemp > 0) {

$intTemp = '_' . $intTemp;

array_push($arrRe, $intTemp);

$arrRe = array_merge($ arrRe, $this->helpForGetBackPath($intTemp));

}

return $arrRe;

}

private function processData() {

foreach ($this->arrAll as $arrTemp) {

$strTemp = ' _' . $arrTemp['id'];

$this->arrIdAll[$strTemp] = $arrTemp;

if ($arrTemp['parent_id'] > 0) {

$strTemp_ = '_' . $ arrTemp['parent_id'];

!isset($this->arrIdRelation[$strTemp_]) && $this->arrIdRelation[$strTemp_] = array();

$this->arrIdRelation[$strTemp_][ $strTemp] = array();

!isset($this->arrIdSon[$strTemp_]) && $this->arrIdSon[$strTemp_] = array();

array_push($this->arrIdSon[$ strTemp_], $strTemp);

} else {

!isset($this->arrIdRelation[$strTemp]) && $this->arrIdRelation[$strTemp] = array();

array_push($this-> arrIdRoot, $strTemp);

}

}

$this->arrIdRelation = $this->helpForGetRelation($this->arrIdRelation);

$this->arrIdLeaf = array_unique($this->arrIdLeaf) ;

foreach ($this->arrIdRelation as $strTemp => $arrTemp) {

$this->arrIdChildren[$strTemp] = $this->helpForGetChildren($arrTemp);

in_array($strTemp, $ this->arrIdRoot) && $this->arrIdRelationSimple[$strTemp] = $arrTemp;

}

$arrTemp = array_keys($this->arrIdAll);

foreach ($arrTemp as $strTemp) {

$this ->arrIdBackPath[$strTemp] = $this->helpForGetBackPath($strTemp);

}

}

private function genSeparator($intLen) {

$strRe = '';

$i = 0;

while ( $i < $intLen) {

$strRe .= '　' . (($i + 1 == $intLen) ? '├' : '│');

$i ++;

}

!empty($ strRe) && $strRe .= '─';

return $strRe;

}

private function genHtml($arrRelation = null, $intSep = 0) {

$strRe = '';

null === $arrRelation && $arrRelation = $this->arrIdRelationSimple;

foreach ($arrRelation as $strKey => $arrTemp) {

if (count($this->arrIdAll[$strKey]) > 0) {

$strSep = $this->genSeparator($intSep);

extract($this->arrIdAll[$strKey]);

eval('$strRe .= "' . $this->strItem . '";');

count($arrTemp) > 0 && $strRe .= $this->genHtml($arrTemp, ($intSep + 1));

}

}

return $strRe;

}

}

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