An example of php weather forecast code

/**
* php weather forecast code
* by bbs.it-home.org
*/
 if(!isset($_GET['q'])){
 //Query the location based on IP
 $p = file_get_contents("http: //bbs.it-home.org/ip/?q={$_SERVER['HTTP_X_FORWARDED_FOR']}");
 }
 else{
 $p = $_GET['q'];
 }
 $k = 0;
 $encoding = mb_detect_encoding($p);
 if($encoding != "UTF-8"){
 $p = mb_convert_encoding($p,"utf-8","gbk");
 }
 $ p_arr = array(
 "01" => "Beijing",
 "02" => "Shanghai",
 "03" => "Tianjin",
 "04" => "Chongqing",
 " 05" => "Heilongjiang",
 "06" => "Jilin",
 "07" => "Liaoning",
 "08" => "Inner Mongolia",
 "09" => " "Hebei",
 "10" => "Shanxi",
 "11" => "Shaanxi",
 "12" => "Shandong",
 "13" => "Xinjiang",
 "14 " => "Tibet",
 "15" => "Qinghai",
 "16" => "Gansu",
 "17" => "Ningxia",
 "18" => "Henan ",
 "19" => "Jiangsu",
 "20" => "Hubei",
 "21" => "Zhejiang",
 "22" => "Anhui",
 "23" => "Fujian",
 "24" => "Jiangxi",
 "25" => "Hunan",
 "26" => "Guizhou",
 "27" => "Sichuan" ,
 "28" => "Guangdong",
 "29" => "Yunnan",
 "30" => "Guangxi",
 "31" => "Hainan",
 "32" = > "Hong Kong",
 "33" => "Macau",
 "34" => "Taiwan"
 );

 function find(&$item,$key,$data){
 global $k ;
 if(preg_match("/$item/u",$data)){
 $k = $key;
 }
 }

 function get_data_arr($key){
 if(!file_exists("./data/ city{$key}.xml")){
 $c =file_get_contents( "http://m.weather.com.cn/data5/city{$key}.xml" );
 file_put_contents("./data/ city{$key}.xml",$c);
 }
 else{
 $c = file_get_contents("./data/city{$key}.xml");
 }
 $arr = explode("," ,$c);
 foreach($arr as $v){
 $data = explode("|",$v);
 $ret[$data[0]] = $data[1];
 }
 return $ret;
 }

 array_walk($p_arr,'find',$p);
 array_walk(get_data_arr($k),'find',$p);
 array_walk(get_data_arr($k),'find', $p);
 $ccode = get_data_arr($k);
 echo file_get_contents("http://m.weather.com.cn/data/{$ccode[$k]}.html");
?>

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