我没有成功地从JSON数组对象中获取值。我特别想找到geometry->location->lat
下面是我正在做的:
$url='http://maps.googleapis.com/maps/api/geocode/json?address='.$a.'&sensor=false';
$result = file_get_contents($url);
$jsonArr = json_decode($result,true);
echo "Lat: ".$jsonArr['results']['geometry']['location']['lat'];
下面是Google返回的JSON的print_r():
{
"results" : [
{
"address_components" : [
{
"long_name" : "46814",
"short_name" : "46814",
"types" : [ "postal_code" ]
},
{
"long_name" : "Fort Wayne",
"short_name" : "Fort Wayne",
"types" : [ "locality", "political" ]
},
{
"long_name" : "Indiana",
"short_name" : "IN",
"types" : [ "administrative_area_level_1", "political" ]
},
{
"long_name" : "United States",
"short_name" : "US",
"types" : [ "country", "political" ]
}
],
"formatted_address" : "Fort Wayne, IN 46814, USA",
"geometry" : {
"bounds" : {
"northeast" : {
"lat" : 41.08472709999999,
"lng" : -85.26534090
},
"southwest" : {
"lat" : 41.00163510,
"lng" : -85.35540899999999
}
},
"location" : {
"lat" : 41.05472940,
"lng" : -85.30328109999999
},
"location_type" : "APPROXIMATE",
"viewport" : {
"northeast" : {
"lat" : 41.08472709999999,
"lng" : -85.26534090
},
"southwest" : {
"lat" : 41.00163510,
"lng" : -85.35540899999999
}
}
},
"types" : [ "postal_code" ]
}
],
"status" : "OK"
}
结果以数组形式返回。得到第一个元素，就完成了。但是，您应该确保在结果数组中至少有一个元素。
echo "Lat: " . $jsonArr['results'][0]['geometry']['location']['lat'];