PHP二维数组排序问题详解(数组键值排序)

$arr = array(
array(
'sort' => 3,
'a' => 'a',
'b' => 'b'
),
array(
'sort' => 5,
'a' => 'a',
'b' => 'b'
),
array(
'sort' => 1,
'a' => 'a',
'b' => 'b'
)
);

function array_sort($arr,$key1,$sort1='asc',$key2='',$sort2='asc'){
    if (!is_array($arr)){
        return $arr;
    }
    foreach($arr AS $key => $row){
        $temp[$key] = $row[$key1];
    }
    $sort1 = $sort1 == 'asc' ? SORT_ASC : SORT_DESC;
    if(!$key2){
        array_multisort($temp, $sort1,$arr);
    } else {
        foreach($arr AS $key => $row){
            $temp2[$key] = $row[$key2];
        }
        $sort2 = $sort2 == 'asc' ? SORT_ASC : SORT_DESC;
        array_multisort($temp, $sort1,$temp2,$sort2,$arr);
    }
    return $arr;
}

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($keysvalue);
 }
 reset($keysvalue);
 foreach ($keysvalue as $k=>$v){
  $new_array[$k] = $arr[$k];
 }
 return $new_array;
}

$array = array(
 array('name'=>'手机','brand'=>'诺基亚','price'=>1050),
 array('name'=>'笔记本电脑','brand'=>'lenovo','price'=>4300),
 array('name'=>'剃须刀','brand'=>'飞利浦','price'=>3100),
 array('name'=>'跑步机','brand'=>'三和松石','price'=>4900),
 array('name'=>'手表','brand'=>'卡西欧','price'=>960),
 array('name'=>'液晶电视','brand'=>'索尼','price'=>6299),
 array('name'=>'激光打印机','brand'=>'惠普','price'=>1200)
);

$ShoppingList = array_sort($array,'price');
print_r($ShoppingList);