<?php

$order_item = Array ( Array ( 'order_id' => 1111 ,'item_id' => 1, 'pro_id' => 1, 'pro_name' => 1111 ,'buy_num' => 5),
Array ( 'order_id' => 1111 ,'item_id' => 2 ,'pro_id' => 2 ,'pro_name' => 2222, 'buy_num' => 5 ),
Array ( 'order_id' => 2222 ,'item_id' => 3 ,'pro_id' => 1 ,'pro_name' => 2222, 'buy_num' => 1 ),
Array ( 'order_id' => 2222 ,'item_id' => 4 ,'pro_id' => 2 ,'pro_name' => 2222, 'buy_num' => 1 )
);

$dataArr = array(
        array(
        'dept_id'=>1,
        'dept_name'=>'一级菜单 ',
        '_parentId'=>''
        ),
        array(
                'dept_id'=>2,
                'dept_name'=>'1二级菜单1 ',
                '_parentId'=>'1'
        ),
        array(
                'dept_id'=>3,
                'dept_name'=>'1二级菜单2 ',
                '_parentId'=>'1'
        ),
        array(
                'dept_id'=>4,
                'dept_name'=>'一级菜单001 ',
                '_parentId'=>''
        ),
        array(
                'dept_id'=>5,
                'dept_name'=>'4二级菜单0012 ',
                '_parentId'=>'4'
        ),
        array(
                'dept_id'=>6,
                'dept_name'=>'4二级菜单0012 ',
                '_parentId'=>'5'
        ),
    );

//$_parentId='1';
$_parentIdArr = array();
$deptidArr = array();
foreach ($dataArr as $arr){
    array_push($_parentIdArr,$arr['_parentId']);
}

foreach ($dataArr as $arr){
    array_push($deptidArr,$arr['dept_id']);
}
$_parentIdArr = array_unique($_parentIdArr);
var_dump($_parentIdArr);
var_dump($deptidArr);



$parentArr = array();
foreach($dataArr as $key=>$arr)
{
    if($arr['_parentId'] =='' ){
        array_push($parentArr,$arr);
        unset($dataArr[$key]);
    }

}
$dataArr = array_values($dataArr);//重建索引
var_dump($dataArr);
echo '顶级目录BE<br>';
var_dump($parentArr);
echo '顶级目录END<br>';




$resultArr=array();
foreach($parentArr as $pkey=>$pVal)
{
    
    
    $pVal['children']=array();
    foreach($dataArr as $key => $arr){
        
        if ($pVal['dept_id'] == $arr['_parentId'] ) {
            
            
            array_push($pVal['children'],$dataArr[$key]);
            //var_dump($dataArr);
            unset($dataArr[$key]);
          }
            //array_push($pVal,$pVal['children']);
    }
    
    //array_push($resultArr,$pVal);
var_dump($pVal);
   foreach($pVal as $key=>$val)
   {
       //var_dump($val);
   }
    
}

//var_dump($resultArr);

exit;

foreach($resultArr as $Rkey=>$Rval )
{
    echo 'last234243<br>';
    //var_dump($dataArr);
    var_dump($Rval['children']);
    echo 'lastedc231230000000000<br>';
    
    
    $Rval['children']=array();
    foreach($dataArr as $key => $arr){
      if($Rval[$Rkey]['dept_id']==$arr['_parentId'])
        {
            //var_dump($dataArr[$key]);
            array_push($Rval['children'],$dataArr[$key]);
            unset($dataArr[$key]);
        }
  }
 
    
}
    
 var_dump($resultArr);
    
    if (count($dataArr)>0) {
        echo '112121ok';
    }
echo 'last';





//var_dump($newArr);

//var_dump($dataArr);









$items = array();
foreach($order_item as $item) {
    $order_id = $item['order_id'];
    unset($item['order_id']);
    
    if(!isset($items[$order_id])) {
        $items[$order_id] = array('order_id'=>$order_id, 'items'=>array());
    }

    $items[$order_id]['items'][] = $item;
}
// 下面这一步可不要
sort($items);

//var_dump($items);