解析JSON地址與陣列響應

Question

我運行該代碼在PHP：

$jsonData = file_get_contents('https://maps.googleapis.com/maps/api/geocode/json?address=306%20Evarts%20St%20NE%20Washington,%20DC%2020002&key=<hidden>'); 
$data = json_decode($jsonData, true); 
var_dump($data); 

，結果如下（重新格式化是可讀的）：

array(2) { 
    ["results"] => array(1) { 
     [0] => array(5) { 
      ["address_components"] => array(7) { 
       [0] => array(3) { 
        ["long_name"] => string(3) "306" 
        ["short_name"]=> string(3) "306" 
        ["types"] => array(1) { 
         [0]=> string(13) "street_number" 
        } 
       } 
       [1] => array(3) { 
        ["long_name"] => string(23) "Evarts Street Northeast" 
        ["short_name"] => string(12) "Evarts St NE" 
        ["types"] => array(1) { 
         [0]=> string(5) "route" 
        } 
       } 
       [2] => array(3) { 
        ["long_name"] => string(20) "Northeast Washington" 
        ["short_name"] => string(20) "Northeast Washington" 
        ["types"] => array(2) { 
         [0] => string(12) "neighborhood" 
         [1] => string(9) "political" 
        } 
       } 
       [3] => array(3) { 
        ["long_name"] => string(10) "Washington" 
        ["short_name"]=> string(4) "D.C." 
        ["types"]=> array(2) { 
         [0]=> string(8) "locality" 
         [1]=> string(9) "political" 
        } 
       } 
       [4]=> array(3) { 
        ["long_name"]=> string(20) "District of Columbia" 
        ["short_name"]=> string(2) "DC" 
        ["types"]=> array(2) { 
         [0]=> string(27) "administrative_area_level_1" 
         [1]=> string(9) "political" 
        } 
       } 
       [5]=> array(3) { 
        ["long_name"]=> string(13) "United States" 
        ["short_name"]=> string(2) "US" 
        ["types"]=> array(2) { 
         [0]=> string(7) "country" 
         [1]=> string(9) "political" 
        } 
       } 
       [6]=> array(3) { 
        ["long_name"]=> string(5) "20002" 
        ["short_name"]=> string(5) "20002" 
        ["types"]=> array(1) { 
         [0]=> string(11) "postal_code" 
        } 
       } 
      } 
      ["formatted_address"]=> string(54) "306 Evarts Street Northeast, Washington, DC 20002, USA" 
      ["geometry"]=> array(3) { 
       ["location"]=> array(2) { 
        ["lat"]=> float(38.9248059) 
        ["lng"]=> float(-77.001318) 
       } 
       ["location_type"]=> string(7) "ROOFTOP" 
       ["viewport"]=> array(2) { 
        ["northeast"]=> array(2) { 
         ["lat"]=> float(38.926154880291) 
         ["lng"]=> float(-76.999969019709) 
        } 
        ["southwest"]=> array(2) { 
         ["lat"]=> float(38.923456919708) 
         ["lng"]=> float(-77.002666980292) 
        } 
       } 
      } 
      ["place_id"]=> string(27) "ChIJvysMWvjHt4kRjif4nyaEb7U" 
      ["types"]=> array(1) { 
       [0]=> string(14) "street_address" 
      } 
     } 
    } 
    ["status"]=> string(2) "OK" 
} 

我怎樣才能回聲各種值在結果中例如地址分量爲long_name？

Answer 1

可使用嵌套foreach循環數組引用：http://php.net/manual/en/control-structures.foreach.php

foreach($data['results'] as $result){ 
    foreach ($result['address_components'] as $value) { 
     echo $value['long_name'] . '<br>'; 
    } 
} 

Answer 2

可以訪問響應數據，如下所示：

$jsonData = file_get_contents('https://maps.googleapis.com/maps/api/geocode/json?address=306%20Evarts%20St%20NE%20Washington,%20DC%2020002&key=API_KEY');  
$data = json_decode($jsonData, true); 

if($data['status'] == 'OK'){ 
    $latitude = $data['results'][0]['geometry']['location']['lat']; 
    $longitude = $data['results'][0]['geometry']['location']['lng']; 
    $formatted_address = $data['results'][0]['formatted_address']; 
}