php使用百度天气接口示例

$city="嘉兴";
$content = file_get_contents("http://api.map.baidu.com/telematics/v3/weather?location=%E5%98%89%E5%85%B4&output=json&ak=5slgyqGDENN7Sy7pw29IUvrZ");
print_r(json_decode($content));

{
    error: 0,
    status: "success",
    date: "2014-04-18",
    results: [
        {
            currentCity: "嘉兴",
            weather_data: [
                {
                    date: "今天（周三）",
                    dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
                    nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
                    weather: "多云",
                    wind: "微风",
                    temperature: "23℃"
                },
                {
                    date: "明天（周四）",
                    dayPictureUrl: "http://api.map.baidu.com/images/weather/day/leizhenyu.png",
                    nightPictureUrl: "http://api.map.baidu.com/images/weather/night/zhongyu.png",
                    weather: "雷阵雨转中雨",
                    wind: "微风",
                    temperature: "29～22℃"
                },
                {
                    date: "后天（周五）",
                    dayPictureUrl: "http://api.map.baidu.com/images/weather/day/yin.png",
                    nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
                    weather: "阴转多云",
                    wind: "微风",
                    temperature: "31～23℃"
                },
                {
                    date: "大后天（周六）",
                    dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
                    nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
                    weather: "多云",
                    wind: "微风",
                    temperature: "31～24℃"
                }
            ]
        },
        {
            currentCity: "合肥市",
            weather_data: [
                {
                    date: "今天（周三）",
                    dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
                    nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
                    weather: "多云",
                    wind: "东风3-4级",
                    temperature: "27℃"
                },
                {
                    date: "明天（周四）",
                    dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
                    nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
                    weather: "多云",
                    wind: "东北风3-4级",
                    temperature: "35～27℃"
                },
                {
                    date: "后天（周五）",
                    dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
                    nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
                    weather: "多云",
                    wind: "南风",
                    temperature: "35～27℃"
                },
                {
                    date: "大后天（周六）",
                    dayPictureUrl: "http://api.map.baidu.com/images/weather/day/duoyun.png",
                    nightPictureUrl: "http://api.map.baidu.com/images/weather/night/duoyun.png",
                    weather: "多云",
                    wind: "东风",
                    temperature: "34～27℃"
                }
            ]
        }
    ]
}