PHP 二维数组去重 保留键值

正好用到,百度到了一段代码,改了改,不用自己输入第二维数组的索引了.

$data[] = array("volume" => 11, "edition" => 11);
$data[] = array("volume" => 11, "edition" => 11);
$data[] = array("volume" => 85, "edition" => 6);
$data[] = array("volume" => 98, "edition" => 2);
$data[] = array("volume" => 86, "edition" => 6);
$data[] = array("volume" => 67, "edition" => 7);


$data = array_unique_fb($data, array_keys($data[0]));

function array_unique_fb($array2D, $keys){
	foreach ($array2D as $k=>$v){
		$v=join(",",$v);  //降维,也可以用implode,将一维数组转换为用逗号连接的字符串
		$temp[$k]=$v;
	}
	$temp=array_unique($temp); //去掉重复的字符串,也就是重复的一维数组
	foreach ($temp as $k => $v){
		$array=explode(",",$v); //再将拆开的数组重新组装
		foreach($keys as $index => $key)
		{
			echo $k;
			$temp2[$k][$key] =$array[$index];
		}
	}
	return $temp2;
}