Question

我正在尝试提取从google api

返回的特定值

<?php 
$url='http://maps.googleapis.com/maps/api/distancematrix/json?origins=19.1629924,72.83930190&destinations=19.1802370,72.8554149&sensor=false';

$contents = file_get_contents($url); 
$contents = utf8_encode($contents); 
$array=json_decode($contents); 
echo  $array['rows']['elements']['distance']['value'];

?>

我预计会返回4238的价值。相反，我得到一个错误：

`PHP Fatal error:  Cannot use object of type stdClass as array in test9.php on` line 7

Answer 1

正确的解决方案是：

echo  $array->rows[0]->elements[0]->distance->value;

执行以下操作以查看json：

<?php

$url='http://maps.googleapis.com/maps/api/distancematrix/json?origins=19.1629924,72.83930190&destinations=19.1802370,72.8554149&sensor=false';

$contents = file_get_contents($url); 
$contents = utf8_encode($contents); 
echo "<pre>";
echo $contents;
echo "\n";
echo "\n";
$array=json_decode($contents); 
echo  $array->rows[0]->elements[0]->distance->value;

?>

http://www.json.org/

你试过node.js吗？

Answer 2

以下代码解决了这个问题：

$array=json_decode($contents, true);
echo  $array['rows'][0]['elements'][0]['distance']['value'];

从json输出数组中返回一个元素

2 个答案: