如何在PHP中打印对象数组的单个元素

我找到了用Google API将地址转换为GPS经度/纬度的类。

我可以打印所有的数组:print_r($geo->adress(my address) .

显示

Array
(
    [0] => stdClass Object
        (
            [location] => stdClass Object
                (
                    [lat] => 53.1243946
                    [lng] => 18.001958
                )
            [city] => Bydgoszcz
            [street] => MarszaĹka Focha
            [number] => 4
            [code] => 85-070
        )
)

但是我不能打印单个元素。我需要添加位置-> lat/lng到变量，但我不能将对象转换为字符串。我该怎么做呢?

$lat = implode(",", $geo->adress('Focha 4, Bydgoszcz'); // doesn't work at all. 

<?php
echo "<pre>";
$geo = new GeoGoogle;
print_r($geo->adress('Focha 4, Bydgoszcz'));
echo"</pre>";

final class GeoGoogle {
  // zwróć listę lokacji pasujących do podanego adresu
  function adress($adress) {
    return $this->parse(
      $this->prepare(
        'http://maps.googleapis.com/maps/api/geocode/json?address='
        .urlencode($adress)
        .'&sensor=false'
      )
    );
  }
  // zwróć listę lokacji pasujących do podanej długości i szerokości
  function latlng($lat,$lng) {
    return $this->parse(
      $this->prepare(
        'http://maps.googleapis.com/maps/api/geocode/json?latlng='
        .$lat .','. $lng
        .'&sensor=false'
      )
    );
  }
  /* pomocnicze */
  private function prepare($uri) {
    return json_decode( file_get_contents($uri) );
  }
  private function parse($data) {
    if($data->status == 'OK') {
      $results = array();
      foreach($data->results as $res) { // przetwórz wyniki
        $result = array(
          'location' => null,
          'city' => null,
          'street' => null,
          'number' => null,
          'code' => null
        );
        // pobierz współrzędne
        if(isset($res->geometry)) {
          if(isset($res->geometry->location)) {
            $result['location'] = $res->geometry->location;
          }
        }
        // pobierz dane
        foreach($res->address_components as $component) {
          foreach($component->types as $type) {
            switch($type) {
              case 'street_number':
                $result['number'] = $component->long_name;
                break;
              case 'route':
                $result['street'] = $component->long_name;
                break;
              case 'postal_code':
                $result['code'] = $component->long_name;
                break;
              case 'sublocality':
                $result['city'] = $component->long_name;
                break;
              case 'administrative_area_level_3':
                if(is_null($result['city'])) {
                  $result['city'] = $component->long_name;
                }
                break;
            }
          }
        }
        if(!is_null($result['city'])) {
          $results[] = (object) $result;
        }
      }
      return $results;
    }
    return array();
  }
}