(资料图片仅供参考)
本教程操作环境:windows7系统、PHP8.1版、Dell G3电脑。
php如何查询城市空气质量?
1、开通空气质量API接口:
通过https://www.juhe.cn/docs/api/id/33?s=cpphpcn
注册及开通
接口说明:
支持全国大部分城市空气质量查询,可实时查询空气质量,小时粒度,实时给出空气质量AQI指数,并给出空气质量级别和首要污染物。
有的城市可能没有监测点实时监测的数据,每1小时更新一次。
2、基于php的空气质量接口调用示例
php代码如下:
// 空气质量调用示例代码 header(\"Content-type:text/html;charset=utf-8\");//配置您申请的appkey$appkey = \"*********************\";//************1.城市空气质量************$url = \"http://web.juhe.cn: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_query($params);$content = juhecurl($url,$paramstring);$result = json_decode($content,true);if($result){if($result[\"error_code\"]==\"0\"){print_r($result);}else{echo $result[\"error_code\"].\":\".$result[\"reason\"];}}else{echo \"请求失败\";}//**************************************************//************2.城市空气PM2.5指数************$url = \"http://web.juhe.cn:8080/environment/air/pm\";$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_query($params);$content = juhecurl($url,$paramstring);$result = json_decode($content,true);if($result){if($result[\"error_code\"]==\"0\"){print_r($result);}else{echo $result[\"error_code\"].\":\".$result[\"reason\"];}}else{echo \"请求失败\";}//**************************************************//************3.城市空气质量-城市列表************$url = \"http://web.juhe.cn:8080/environment/air/airCities\";$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\"]==\"0\"){print_r($result);}else{echo $result[\"error_code\"].\":\".$result[\"reason\"];}}else{echo \"请求失败\";}//**************************************************//************4.城市空气PM2.5指数-城市列表************$url = \"http://web.juhe.cn:8080/environment/air/pmCities\";$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\"]==\"0\"){print_r($result);}else{echo $result[\"error_code\"].\":\".$result[\"reason\"];}}else{echo \"请求失败\";}//**************************************************//************5.城市辐射指数************$url = \"http://web.juhe.cn:8080/environment/air/radia\";$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\" => \"\",//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);}else{echo $result[\"error_code\"].\":\".$result[\"reason\"];}}else{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, CURLOPT_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 , CURLOPT_POSTFIELDS , $params );curl_setopt( $ch , CURLOPT_URL , $url );}else{if($params){curl_setopt( $ch , CURLOPT_URL , $url.\"?\".$params );}else{curl_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;}
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