php 二维数组排序

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; 
}