使用php json从外部网址获取数据？

Question

I'm trying to extract data from an external url using json in PHP using the following code:

<?php
error_reporting(-1);
ini_set('display_errors', 'On');
$url = "http://maps.googleapis.com/maps/api/geocode/json?latlng=37.76893497,-122.42284884&sensor=false";
$json = file_get_contents($url);
$json_data = json_decode($json, true);
echo $json_data["formatted_address"];
?>

however, I get nothing on my page. in fact, i get this error:

Notice: Undefined index: formatted_address on line 7 

is there something I'm missing?

any help would be greatly appreciated.

Answer 1

'formatted_address'是主数组'results'的键，因此您应循环$json_data['results']并搜索键'formatted_address' 。

Answer 2

尝试这种方式

echo $json_data['results'][0]['formatted_address'];

Answer 3

You are not providing proper INDEX . Proper INDEX is $json_data['results'][0]['formatted_address']; for 1st result.

Use foreach loop to print all address.

Try

$url = "http://maps.googleapis.com/maps/api/geocode/json?latlng=37.76893497,-122.42284884&sensor=false";
$json = file_get_contents($url);
$json_data = json_decode($json, true);

foreach($json_data['results'] as $item)
{
    echo $item['formatted_address']."<br />";
}