谷歌地理代码。解析JSON问题

Question

我想从他们的邮政编码(加拿大/美国)的google地理代码中得到一个用户城市，州/省，国家。我以JSON：https://developers.google.com/maps/documentation/geocoding/#JSON的形式检索数据

问题是，“address_components”的数量/顺序并不总是相同。我使用的就像：$geocodedinfo['results'][0]['address_components'][3]['short_name'];，但我很快意识到，这并不总是省/州，因为有时谷歌会在'address_components‘下添加一个额外的元素。

是否有一种方法可以仅根据我需要的具体情况(即:城市、州/省、国家)来分析结果？

编辑--当我得到JSON时，实际上是对它进行解码

Array
(
[results] => Array
    (
        [0] => Array
            (
                [address_components] => Array
                    (
                        [0] => Array
                            (
                                [long_name] => V2X 2P6
                                [short_name] => V2X 2P6
                                [types] => Array
                                    (
                                        [0] => postal_code
                                    )

                            )

                        [1] => Array
                            (
                                [long_name] => Maple Ridge
                                [short_name] => Maple Ridge
                                [types] => Array
                                    (
                                        [0] => locality
                                        [1] => political
                                    )

                            )

                        [2] => Array
                            (
                                [long_name] => Maple Ridge
                                [short_name] => Maple Ridge
                                [types] => Array
                                    (
                                        [0] => administrative_area_level_3
                                        [1] => political
                                    )

                            )

                        [3] => Array
                            (
                                [long_name] => Greater Vancouver Regional District
                                [short_name] => Greater Vancouver Regional District
                                [types] => Array
                                    (
                                        [0] => administrative_area_level_2
                                        [1] => political
                                    )

                            )

                        [4] => Array
                            (
                                [long_name] => British Columbia
                                [short_name] => BC
                                [types] => Array
                                    (
                                        [0] => administrative_area_level_1
                                        [1] => political
                                    )

                            )

                        [5] => Array
                            (
                                [long_name] => Canada
                                [short_name] => CA
                                [types] => Array
                                    (
                                        [0] => country
                                        [1] => political
                                    )

                            )

                    )

                [formatted_address] => Maple Ridge, BC V2X 2P6, Canada
                [geometry] => Array
                    (
                        [bounds] => Array
                            (
                                [northeast] => Array
                                    (
                                        [lat] => 49.2214351
                                        [lng] => -122.6577849
                                    )

                                [southwest] => Array
                                    (
                                        [lat] => 49.219268
                                        [lng] => -122.663613
                                    )

                            )

                        [location] => Array
                            (
                                [lat] => 49.2202679
                                [lng] => -122.660587
                            )

                        [location_type] => APPROXIMATE
                        [viewport] => Array
                            (
                                [northeast] => Array
                                    (
                                        [lat] => 49.2217005303
                                        [lng] => -122.6577849
                                    )

                                [southwest] => Array
                                    (
                                        [lat] => 49.2190025697
                                        [lng] => -122.663613
                                    )

                            )

                    )

                [types] => Array
                    (
                        [0] => postal_code
                    )

            )

    )

[status] => OK
)

Answer 1

你得把结果循环起来。

大多数相关的PHP函数都不支持多维数组，而且不管怎么说，这些函数都是循环的。

你可能会想要这样的东西：

foreach ($geocodedinfo["results"] as $result) {
    foreach ($result["address_components"] as $address) {
        // Repeat the following for each desired type
        if (in_array("country", $address["types"])) {
            $country = $address["long_name"];
        }
    }
}

Answer 2

看看这个，http://php.net/manual/en/control-structures.foreach.php --它是用于遍历数组的，您可以这样做，

foreach ($result['results'][0]['address_components'] as $key => $val) 
    { 
    if (in_array('country', $result['results'][0]['address_components'][$key]['types'][0])) 
    { 
    echo $result['results'][0]['address_components'][$key]['long_name']; 
    } 
}

像这样的东西应该能起作用

Answer 3

您可以通过一个foreach循环运行结果，并获取您要查找的数据。

我对谷歌类型的含义进行了最好的猜测，我可能会对那些内容置之不理。

$translate = array(
    'locality' => 'city',
    'administrative_area_level_3' => 'area', // not sure what this one is
    'administrative_area_level_2' => 'county', // regional district ?
    'administrative_area_level_1' => 'state', // province
    'country' => 'country',
    'postal_code' => 'zip', // postal code
);

$address_components = array( );
foreach ($geocodedinfo['results'][0]['address_components'] as $component) {
    $address_components[$translate[$component['type'][0]]] = $component['long_name'];
}

var_dump($address_components);