PHP：雅虎天气Api获取空结果与file_get_content

Question

我正在做一个Ajax调用从我的网页，以获取从JSON格式的getWeather.php页面的响应。有时我会得到结果，但大多数情况下我没有。但是每当我浏览这个链接，它总是给我JSON格式的结果。我在getWeather.php中做错了什么？

https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20in%20(select%20woeid%20from%20geo.places(1)%20where%20text%3D%27lahore%27)%20AND%20u%3D%27c%27&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&callback= 

getWeather.php实现：

<?php 
$city = $_GET['city']; 

echo file_get_contents("https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20in%20(select%20woeid%20from%20geo.places(1)%20where%20text%3D%27".$city."%27)%20AND%20u%3D%27c%27&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys&callback="); 


?> 

{ “查询”：{ “计数”：0， “创建”： “2017-01-03T04：50：27Z”，” lang“：”en-US“，”results“：null}}

Answer 1

雅虎天气API有问题。你可以检查雅虎; https://developer.yahoo.com/weather/自己的应用程序也出现同样的问题。