php array_filter 如果时间在 1 小时内

Question

我想弄清楚如何根据比较来过滤对象。

我得到一个看起来像这样的对象，尽管有 15 个结果....

stdClass Object
(
    [FlightInfoExResult] => stdClass Object
        (
            [next_offset] => 15
            [flights] => Array
                (
                    [0] => stdClass Object
                        (
                            [faFlightID] => SWA2078-1499232401-airline-0885
                            [ident] => SWA2078
                            [aircrafttype] => B738
                            [filed_ete] => 03:00:00
                            [filed_time] => 1499232401
                            [filed_departuretime] => 1499477700
                            [filed_airspeed_kts] => 423
                            [filed_airspeed_mach] => 
                            [filed_altitude] => 0
                            [route] => 
                            [actualdeparturetime] => 0
                            [estimatedarrivaltime] => 1499489100
                            [actualarrivaltime] => 0
                            [diverted] => 
                            [origin] => KPHX
                            [destination] => KMKE
                            [originName] => Phoenix Sky Harbor Intl
                            [originCity] => Phoenix, AZ
                            [destinationName] => General Mitchell Intl

我需要过滤这个对象，所以只返回 [flights] 其中 [filed_departuretime] 是查询结果 $time = strtotime($ item['departure_time']);

通过做这样的事情:

abs($object->filed_departuretime - $time) <= 3600)

希望这一切都有意义，感谢您的帮助 :) 我真的不知道 array_filter 是如何工作的，所以这就是我目前所知道的....

//set flight identity
$ident = $item['airline'].$item['flight_number'];
$date = date('Y-m-d H:i:s');
$time = strtotime($item['departure_time']);

//get flightaware results
$flightAwareResult = FlightInfoEx($ident);

/*$flightResult = array_filter(
  $flightAwareResult,
);*/

Answer 1

数组过滤器接受一个数组并通过一个函数传递每个元素。它只保留函数返回真值的元素。示例:

//set flight identity
$ident = $item['airline'].$item['flight_number'];
$date = date('Y-m-d H:i:s');
$time = strtotime($item['departure_time']);

//get flightaware results
$flightAwareResult = FlightInfoEx($ident);
$filtered_array = array_filter($flightAwareResult->FlightInfoExResult->flights, function ($value) use ($time) { 
      return  $time - $value->filed_departuretime) <= 3600; 
});