<?php
  $array = array(
 array('name'=>'手機','brand'=>'諾基亞','price'=>1050),
 array('name'=>'膝上型電腦','brand'=>'lenovo','price'=>4300),
 array('name'=>'剃鬚刀','brand'=>'飛利浦','price'=>3100),
 array('name'=>'跑步機','brand'=>'三和松石','price'=>4900),
 array('name'=>'手錶','brand'=>'卡西歐','price'=>960),
 array('name'=>'液晶電視','brand'=>'索尼','price'=>6299),
 array('name'=>'鐳射印表機','brand'=>'惠普','price'=>1200)
);
$ShoppingList = array_sort($array,'price');
echo "<pre>";
print_r($ShoppingList);


function array_sort($arr,$keys,$type='asc'){ 
 $keysvalue = $new_array = array();
 foreach ($arr as $k=>$v){
  $keysvalue[$k] = $v[$keys];
 }
 if($type == 'asc'){
  asort($keysvalue);
 }else{
  arsort($keysvalue);
 }
 var_dump($keysvalue);
 reset($keysvalue);
 var_dump($keysvalue);
 foreach ($keysvalue as $k=>$v){
  $new_array[$k] = $arr[$k];
 }
 return $new_array; 
}