1、基于 php 的 pm2.5 实时查询 api 调用代码实例代码描述：基于 php 的 pm2.5 实时查询 api 调用代码实例关联数据：空气质量接口地址： +-/-/ 空气 质量调 用示例代码 聚合数据/ 在线 接口文档： 请 的 appkey$appkey = “*“;/*1.城市空气质量*$url = “:8080/environment/air/cityair“;$params = array(“city“ = “,/城市名称的中文名称或拼音，如：上海 或 shanghai“key“ = $appkey,/APP Key);$paramstring = http_build_quer
2、y($params);$content = juhecurl($url,$paramstring);$result = json_decode($content,true);if($result)if($result'error_code'='0')print_r($result);elseecho $result'error_code'.“:“.$result'reason'elseecho “请求失败“;/*/*2.城市空气 PM2.5 指数*$url = “:8080/environment/air/pm“;$params
3、= array(“city“ = “,/城市名称的中文名称或拼音，如：上海 或 shanghai“key“ = $appkey,/APP Key);$paramstring = http_build_query($params);$content = juhecurl($url,$paramstring);$result = json_decode($content,true);if($result)if($result'error_code'='0')print_r($result);elseecho $result'error_code'.“
4、:“.$result'reason'elseecho “请求失败“;/*/*3.城市空气质量-城市列表*$url = “:8080/environment/air/airCities“;$params = array(“key“ = $appkey,/APP Key);$paramstring = http_build_query($params);$content = juhecurl($url,$paramstring);$result = json_decode($content,true);if($result)if($result'error_code'
5、;='0')print_r($result);elseecho $result'error_code'.“:“.$result'reason'elseecho “请求失败“;/*/*4.城市空气 PM2.5 指数- 城市列表*$url = “:8080/environment/air/pmCities“;$params = array(“key“ = $appkey,/APP Key);$paramstring = http_build_query($params);$content = juhecurl($url,$paramstring);$
6、result = json_decode($content,true);if($result)if($result'error_code'='0')print_r($result);elseecho $result'error_code'.“:“.$result'reason'elseecho “请求失败“;/*/*5.城市辐射指数*$url = “:8080/environment/air/radia“;$params = array(“city“ = “,/城市名称的中文拼音，查询城市为“ 上海”，则输入：上海“num“ =
7、“,/查询页码数，不写默认为第一页。“key“ = $appkey,/APP Key);$paramstring = http_build_query($params);$content = juhecurl($url,$paramstring);$result = json_decode($content,true);if($result)if($result'error_code'='0')print_r($result);elseecho $result'error_code'.“:“.$result'reason'else
8、echo “请求失败“;/*/* 请求接口返回内容* param string $url 请求的 URL 地址* param string $params 请求的参数* param int $ipost 是否采用 POST 形式* return string*/function juhecurl($url,$params=false,$ispost=0)$httpInfo = array();$ch = curl_init();curl_setopt( $ch, CURLOPT_HTTP_VERSION , CURL_HTTP_VERSION_1_1 );curl_setopt( $ch, C
9、URLOPT_USERAGENT , 'JuheData' );curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT , 60 );curl_setopt( $ch, CURLOPT_TIMEOUT , 60);curl_setopt( $ch, CURLOPT_RETURNTRANSFER , true );curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);if( $ispost )curl_setopt( $ch , CURLOPT_POST , true );curl_setopt( $ch , CU
10、RLOPT_POSTFIELDS , $params );curl_setopt( $ch , CURLOPT_URL , $url );elseif($params)curl_setopt( $ch , CURLOPT_URL , $url.'?'.$params );elsecurl_setopt( $ch , CURLOPT_URL , $url);$response = curl_exec( $ch );if ($response = FALSE) /echo “cURL Error: “ . curl_error($ch);return false;$httpCode = curl_getinfo( $ch , CURLINFO_HTTP_CODE );$httpInfo = array_merge( $httpInfo , curl_getinfo( $ch ) );curl_close( $ch );return $response;
