php小代碼樹形菜單產生

0,'val'=>'頂級菜單1','parent'=>-1);$mixTree[] = array('id'=>1,'val'=>'頂級菜單2','parent'=>-1);$mixTree[] = array('id'=>2,'val'=>'頂級菜單1下的二級菜單1','parent'=>0);$mixTree[] = array('id'=>3,'val'=>'頂級菜單1下的二級菜單2','parent'=>0);$mixTree[] = array('id'=>4,'val'=>'頂級菜單2下的二級菜單1','parent'=>1);$mixTree[] = array('id'=>5,'val'=>'頂級菜單1下的二級菜單2下的三級菜單1','parent'=>3);/* * 通過二維數組把上面的資料掛載成樹 */$treeDatas = array();foreach($mixTree as $nodeDatas){    if($nodeDatas['parent']==-1){        $treeDatas[-1][]=$nodeDatas;    }else{        $treeDatas[$nodeDatas['parent']][]=$nodeDatas;    }}/* * 遍曆列印其父結點及其子結點 */function traverSesing($nodeDatas,$treeDatas){    echo $nodeDatas['val'];    if(!empty($treeDatas[$nodeDatas['id']])&& is_array($treeDatas[$nodeDatas['id']])){        echo '
 

  ';        foreach($treeDatas[$nodeDatas['id']] as $childNodeDatas){            echo '
  
'; traverSesing($childNodeDatas, $treeDatas); echo '
';        }        echo '
 
';    }    } echo '
 

  ';foreach($treeDatas[-1] as $nodeDatas){    echo '
  
'; traverSesing($nodeDatas, $treeDatas); echo '
';}echo '
 
';

執行結果

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