PHP获取二维数组高低点

1. PHP获取二维数组Kline 开，高，低，收

2. $data = [
           [
               "open" => "9263.8",
               "high" => "9263.8",
               "low" => "9256",
               "close" => "9259.4"
           ],
           [
               "open" => "9260",
               "high" => "9260.6",
               "low" => "9255.1",
               "close" => "9255.1"
           ],
           [
               "open" => "9255.1",
               "high" => "9257.5",
               "low" => "9254.9",
               "close" => "9257.5"
           ]
   ];

   foreach ($data as $key=>$val) {
       $opens[] = $val["open"];
       $highs[] = $val["high"];
       $lows[] = $val["low"];
       $closes[]= $val["close"];
   }

   $new_arr["open"] = (double)reset($opens);
   $new_arr["high"] = (double)max($highs);
   $new_arr["low"] = (double)min($lows);
   $new_arr["close"] = (double)end($closes);
   var_dump($new_arr);