php如何查询城市空气质量

// 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;

}