天气预报集成函数

/**
 * Weather
 *
 * @package		Weather
 * @author		王长宏
 * @link		http://blog.csdn.net/wang350
 */

// ------------------------------------------------------------------------

/**
 * 
 * 调用方法
 * $weather = new Weather;
 * //这个日期只能是今天和未来5天内的时间，否则返回false
 * $weather->get('2013-12-13');//默认是今天
 * 如果是今天的话，则得到的是实时天气情况；如果是未来的，则是气温范围
 * 需要其他的天气情况的话，自己按需要整理 getWeather() 函数
 * 接口详细信息 请参考 blog ：http://blog.mynook.info/2012/08/18/weather-com-cn-api.html
 * 
 * 注意：
 * 本函数只能得到当天的 PM2.5 API文档：http://www.juhe.cn/docs/api/id/33/aid/76
 * 
 * 如果得到未来的请参考（需要付费） http://www.thinkpage.cn/weather/api/#getWeather 这个可以得到未来的空气质量指数
 * 
 * 注意，如果接口服务器不稳定，如果没有得到空气质量的数据，则不会显示。
 * 
 * 本文档一些函数来自网络，感谢前辈们的付出，谢谢！
 */

class Weather
{
	var $cache = 1;
	var $cache_time = 3600;
	
	var $city = '';
	//城市的拼音
	var $citypy = '';
	var $citycode = '';
	var $juheAppKey = '74******************ca';
	
	function __construct(){
		$this->setCity();
	}
	
	function getcache(){
		$weather_name = 'weather'.$this->date;
		if( !$this->cache || !isset($_COOKIE[$weather_name]) ||  !$_COOKIE[$weather_name]){
			$weather = $this->getWeather();
			setcookie($weather_name, json_encode($weather), time() + $this->cache_time, '/');
		}else{
			$weather = $this->json_to_array( json_decode($_COOKIE[$weather_name]) );
		}
		
		return $weather;
	}
	
	
	function get($date=''){
		if(!$date){
			$date = strtotime( date('Y-m-d') );
		}else{
			$date = strtotime($date);
		}
		
		$this->date = $date;
		
		return $this->getcache();
	}
	
	function _getAir(){
		$city = iconv('UTF-8', 'GB2312', $this->city);
		
		$url = 'http://web.juhe.cn:8080/environment/air/pm?city='.$this->city.'&key='.$this->juheAppKey;
		//create cURL connection
		$curl_connection = curl_init($url);

		//set options
		//curl_setopt($curl_connection, CURLOPT_COOKIE, $cookie);
		curl_setopt($curl_connection, CURLOPT_COOKIESESSION, true);
		curl_setopt($curl_connection, CURLOPT_POST, false);
		curl_setopt($curl_connection, CURLOPT_CONNECTTIMEOUT, 30);
		curl_setopt($curl_connection, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
		curl_setopt($curl_connection, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($curl_connection, CURLOPT_SSL_VERIFYPEER, false);
		curl_setopt($curl_connection, CURLOPT_FOLLOWLOCATION, 1);

		/*
		 * set data to be posted,
		 * Note: Passing an array to CURLOPT_POSTFIELDS will encode the data as multipart/form-data,
		 * while passing a URL-encoded string will encode the data as application/x-www-form-urlencoded.
		 */

		//perform our request
		$result = curl_exec($curl_connection);

		//show information regarding the request
		//print_r(curl_getinfo($curl_connection));
		//echo curl_errno($curl_connection) . '-' . curl_error($curl_connection);

		//close the connection
		curl_close($curl_connection);
		
		if( $result ){
			$airInfo = json_decode($result);
			return $this->json_to_array($airInfo->result[0]);
		}
		
		return array();
	}
	
	function setCity(){
		if(!$this->city){
			if( !isset($_COOKIE['user_ip']) ||  !$_COOKIE['user_ip']){
				$ip = $this->getIP();
				if($ip == '127.0.0.1'){
					$ip = '222.128.107.66';
				}
				
				setcookie('user_ip', $ip, time() + 99999999999, '/');
			}else{
				$ip = $_COOKIE['user_ip'];
			}
			
			if( !isset($_COOKIE['user_city']) ||  !$_COOKIE['user_city']){
				$city = $this->getCity($ip);
				setcookie('user_city', $city, time() + 99999999999, '/');
			}else{
				$city = $_COOKIE['user_city'];
			}
			
			$city = str_split($city,strlen($city)-3);
			$this->city = $city[0];
			
			$isUtf8 = is_utf8($this->city) ? 1 : NULL;
			$this->citypy = Pinyin($this->city, $isUtf8);
			
			
			if( !isset($_COOKIE['citycode']) ||  !$_COOKIE['citycode']){
				$cityUrl = "http://evenle.com/wei/20130921/city.php";

				$web=json_decode(file_get_contents($cityUrl));
				$arr=$this->json_to_array($web);
				$this->citycode = $arr[$this->city];
				setcookie('citycode', $this->citycode, time() + 99999999999, '/');
			}else{
				$this->citycode = $_COOKIE['citycode'];
			}
		}
	}
	
	function getIP()
	{
		static $realip;
		if (isset($_SERVER)){
			if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
				$realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
			} else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
				$realip = $_SERVER["HTTP_CLIENT_IP"];
			} else {
				$realip = $_SERVER["REMOTE_ADDR"];
			}
		} else {
			if (getenv("HTTP_X_FORWARDED_FOR")){
				$realip = getenv("HTTP_X_FORWARDED_FOR");
			} else if (getenv("HTTP_CLIENT_IP")) {
				$realip = getenv("HTTP_CLIENT_IP");
			} else {
				$realip = getenv("REMOTE_ADDR");
			}
		}


		return $realip;
	}


	/**
	* 获取 IP  地理位置
	* 淘宝IP接口
	* @Return: array
	*/
	function getCity($ip)
	{
		$url="http://ip.taobao.com/service/getIpInfo.php?ip=".$ip;
		$ip=json_decode(file_get_contents($url));	
		if((string)$ip->code=='1'){
		return false;
		}
		$data = $ip->data->city;
		return $data;	
	}

	function getWeather($cityId='')
	{
		if(!$cityId){
			$cityId = $this->citycode;
		}
		
		if($this->date != strtotime( date('Y-m-d') )){
			$url="http://m.weather.com.cn/data/".$cityId.".html";
			$_weather=file_get_contents($url);
			if($_weather){
				$data = json_decode($_weather);
				$key = ( ($this->date-strtotime( date('Y-m-d') ))/86400 ) + 1;
				$data = $this->json_to_array($data);
				
				//天气的详细参数说明参考
				$qiwen = 'temp' . $key;
				$tianqi = 'weather' . $key;
				$weather['qiwen'] = $data['weatherinfo'][$qiwen];
				$weather['tianqi'] = $data['weatherinfo'][$tianqi];
			}
		}else{
			$url= 'http://www.weather.com.cn/data/sk/'.$cityId.'.html';
			$_weather = file_get_contents($url);
			$weather = array();
			if($_weather){
				$data = json_decode($_weather);
				$weather['qiwen'] = $data->weatherinfo->temp.'℃';
			}
			
			$url='http://www.weather.com.cn/data/cityinfo/'.$cityId.'.html';
			$_weather = file_get_contents($url);
			if($_weather){
				$data = json_decode($_weather);
				$weather['tianqi'] = $data->weatherinfo->weather;
			}
		}
		
		$air = $this->_getAir();
		$weather['air'] = $air;
		return $weather;	
	}

	function json_to_array($web){
		$arr=array();
		foreach($web as $k=>$w){
			if(is_object($w)) $arr[$k]= $this->json_to_array($w); //判断类型是不是object
			else $arr[$k]=$w;
		}
		return $arr;
	}
	
}

function is_utf8($word)
{
	if (preg_match("/^([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){1}/",$word) == true || preg_match("/([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){1}$/",$word) == true || preg_match("/([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){2,}/",$word) == true)
	{
		return true;
	}
	else
	{
		return false;
	}
} 

function Pinyin($_String, $_Code='gb2312')
{
	$_DataKey = "a|ai|an|ang|ao|ba|bai|ban|bang|bao|bei|ben|beng|bi|bian|biao|bie|bin|bing|bo|bu|ca|cai|can|cang|cao|ce|ceng|cha".
	"|chai|chan|chang|chao|che|chen|cheng|chi|chong|chou|chu|chuai|chuan|chuang|chui|chun|chuo|ci|cong|cou|cu|".
	"cuan|cui|cun|cuo|da|dai|dan|dang|dao|de|deng|di|dian|diao|die|ding|diu|dong|dou|du|duan|dui|dun|duo|e|en|er".
	"|fa|fan|fang|fei|fen|feng|fo|fou|fu|ga|gai|gan|gang|gao|ge|gei|gen|geng|gong|gou|gu|gua|guai|guan|guang|gui".
	"|gun|guo|ha|hai|han|hang|hao|he|hei|hen|heng|hong|hou|hu|hua|huai|huan|huang|hui|hun|huo|ji|jia|jian|jiang".
	"|jiao|jie|jin|jing|jiong|jiu|ju|juan|jue|jun|ka|kai|kan|kang|kao|ke|ken|keng|kong|kou|ku|kua|kuai|kuan|kuang".
	"|kui|kun|kuo|la|lai|lan|lang|lao|le|lei|leng|li|lia|lian|liang|liao|lie|lin|ling|liu|long|lou|lu|lv|luan|lue".
	"|lun|luo|ma|mai|man|mang|mao|me|mei|men|meng|mi|mian|miao|mie|min|ming|miu|mo|mou|mu|na|nai|nan|nang|nao|ne".
	"|nei|nen|neng|ni|nian|niang|niao|nie|nin|ning|niu|nong|nu|nv|nuan|nue|nuo|o|ou|pa|pai|pan|pang|pao|pei|pen".
	"|peng|pi|pian|piao|pie|pin|ping|po|pu|qi|qia|qian|qiang|qiao|qie|qin|qing|qiong|qiu|qu|quan|que|qun|ran|rang".
	"|rao|re|ren|reng|ri|rong|rou|ru|ruan|rui|run|ruo|sa|sai|san|sang|sao|se|sen|seng|sha|shai|shan|shang|shao|".
	"she|shen|sheng|shi|shou|shu|shua|shuai|shuan|shuang|shui|shun|shuo|si|song|sou|su|suan|sui|sun|suo|ta|tai|".
	"tan|tang|tao|te|teng|ti|tian|tiao|tie|ting|tong|tou|tu|tuan|tui|tun|tuo|wa|wai|wan|wang|wei|wen|weng|wo|wu".
	"|xi|xia|xian|xiang|xiao|xie|xin|xing|xiong|xiu|xu|xuan|xue|xun|ya|yan|yang|yao|ye|yi|yin|ying|yo|yong|you".
	"|yu|yuan|yue|yun|za|zai|zan|zang|zao|ze|zei|zen|zeng|zha|zhai|zhan|zhang|zhao|zhe|zhen|zheng|zhi|zhong|".
	"zhou|zhu|zhua|zhuai|zhuan|zhuang|zhui|zhun|zhuo|zi|zong|zou|zu|zuan|zui|zun|zuo";
	$_DataValue = "-20319|-20317|-20304|-20295|-20292|-20283|-20265|-20257|-20242|-20230|-20051|-20036|-20032|-20026|-20002|-19990".
	"|-19986|-19982|-19976|-19805|-19784|-19775|-19774|-19763|-19756|-19751|-19746|-19741|-19739|-19728|-19725".
	"|-19715|-19540|-19531|-19525|-19515|-19500|-19484|-19479|-19467|-19289|-19288|-19281|-19275|-19270|-19263".
	"|-19261|-19249|-19243|-19242|-19238|-19235|-19227|-19224|-19218|-19212|-19038|-19023|-19018|-19006|-19003".
	"|-18996|-18977|-18961|-18952|-18783|-18774|-18773|-18763|-18756|-18741|-18735|-18731|-18722|-18710|-18697".
	"|-18696|-18526|-18518|-18501|-18490|-18478|-18463|-18448|-18447|-18446|-18239|-18237|-18231|-18220|-18211".
	"|-18201|-18184|-18183|-18181|-18012|-17997|-17988|-17970|-17964|-17961|-17950|-17947|-17931|-17928|-17922".
	"|-17759|-17752|-17733|-17730|-17721|-17703|-17701|-17697|-17692|-17683|-17676|-17496|-17487|-17482|-17468".
	"|-17454|-17433|-17427|-17417|-17202|-17185|-16983|-16970|-16942|-16915|-16733|-16708|-16706|-16689|-16664".
	"|-16657|-16647|-16474|-16470|-16465|-16459|-16452|-16448|-16433|-16429|-16427|-16423|-16419|-16412|-16407".
	"|-16403|-16401|-16393|-16220|-16216|-16212|-16205|-16202|-16187|-16180|-16171|-16169|-16158|-16155|-15959".
	"|-15958|-15944|-15933|-15920|-15915|-15903|-15889|-15878|-15707|-15701|-15681|-15667|-15661|-15659|-15652".
	"|-15640|-15631|-15625|-15454|-15448|-15436|-15435|-15419|-15416|-15408|-15394|-15385|-15377|-15375|-15369".
	"|-15363|-15362|-15183|-15180|-15165|-15158|-15153|-15150|-15149|-15144|-15143|-15141|-15140|-15139|-15128".
	"|-15121|-15119|-15117|-15110|-15109|-14941|-14937|-14933|-14930|-14929|-14928|-14926|-14922|-14921|-14914".
	"|-14908|-14902|-14894|-14889|-14882|-14873|-14871|-14857|-14678|-14674|-14670|-14668|-14663|-14654|-14645".
	"|-14630|-14594|-14429|-14407|-14399|-14384|-14379|-14368|-14355|-14353|-14345|-14170|-14159|-14151|-14149".
	"|-14145|-14140|-14137|-14135|-14125|-14123|-14122|-14112|-14109|-14099|-14097|-14094|-14092|-14090|-14087".
	"|-14083|-13917|-13914|-13910|-13907|-13906|-13905|-13896|-13894|-13878|-13870|-13859|-13847|-13831|-13658".
	"|-13611|-13601|-13406|-13404|-13400|-13398|-13395|-13391|-13387|-13383|-13367|-13359|-13356|-13343|-13340".
	"|-13329|-13326|-13318|-13147|-13138|-13120|-13107|-13096|-13095|-13091|-13076|-13068|-13063|-13060|-12888".
	"|-12875|-12871|-12860|-12858|-12852|-12849|-12838|-12831|-12829|-12812|-12802|-12607|-12597|-12594|-12585".
	"|-12556|-12359|-12346|-12320|-12300|-12120|-12099|-12089|-12074|-12067|-12058|-12039|-11867|-11861|-11847".
	"|-11831|-11798|-11781|-11604|-11589|-11536|-11358|-11340|-11339|-11324|-11303|-11097|-11077|-11067|-11055".
	"|-11052|-11045|-11041|-11038|-11024|-11020|-11019|-11018|-11014|-10838|-10832|-10815|-10800|-10790|-10780".
	"|-10764|-10587|-10544|-10533|-10519|-10331|-10329|-10328|-10322|-10315|-10309|-10307|-10296|-10281|-10274".
	"|-10270|-10262|-10260|-10256|-10254";
	$_TDataKey = explode('|', $_DataKey);
	$_TDataValue = explode('|', $_DataValue);
	$_Data = (PHP_VERSION>='5.0') ? array_combine($_TDataKey, $_TDataValue) : _Array_Combine($_TDataKey, $_TDataValue);
	arsort($_Data);
	reset($_Data);
	if($_Code != 'gb2312') $_String = _U2_Utf8_Gb($_String);
		$_Res = '';
	for($i=0; $i160) { $_Q = ord(substr($_String, ++$i, 1)); $_P = $_P*256 + $_Q - 65536; }
		$_Res .= _Pinyin($_P, $_Data);
	}
	return preg_replace("/[^a-z0-9]*/", '', $_Res);
}
function _Pinyin($_Num, $_Data)
{
	if ($_Num>0 && $_Num<160 ) return chr($_Num);
	elseif($_Num<-20319 || $_Num>-10247) return '';
	else {
		foreach($_Data as $k=>$v){ if($v<=$_Num) break; }
		return $k;
	}
}
function _U2_Utf8_Gb($_C)
{
	$_String = '';
	if($_C < 0x80) $_String .= $_C;
		elseif($_C < 0x800)
	{
		$_String .= chr(0xC0 | $_C>>6);
		$_String .= chr(0x80 | $_C & 0x3F);
	}elseif($_C < 0x10000){
		$_String .= chr(0xE0 | $_C>>12);
		$_String .= chr(0x80 | $_C>>6 & 0x3F);
		$_String .= chr(0x80 | $_C & 0x3F);
	} elseif($_C < 0x200000) {
		$_String .= chr(0xF0 | $_C>>18);
		$_String .= chr(0x80 | $_C>>12 & 0x3F);
		$_String .= chr(0x80 | $_C>>6 & 0x3F);
		$_String .= chr(0x80 | $_C & 0x3F);
	}
	return iconv('UTF-8', 'GB2312', $_String);
}
function _Array_Combine($_Arr1, $_Arr2)
{
	for($i=0; $i