本文实例讲述了PHP采集自中央气象台范围覆盖全国的天气预报代码。分享给大家供大家参考。具体分析如下：
天气预报信息采集自中央气象台,信息准确,覆盖面广,代码简单,返回是json代码,可以用于客户端调用,也可以在服务器端处理后显示,笔者的wordpress天气预报插件就是使用的这段代码,需要注意的是,这段代码会在服务器产生缓存文件,需要在当前目录中新建data文件夹,保证文件夹可写.
$p = $_get['q']; $k = 0; $encoding = mb_detect_encoding($p); if($encoding != "utf-8"){ $p = mb_convert_encoding($p,"utf-8","gbk"); } $p_arr = array( "01" => "北京", "02" => "上海", "03" => "天津", "04" => "重庆", "05" => "黑龙江", "06" => "吉林", "07" => "辽宁", "08" => "内蒙古", "09" => "河北", "10" => "山西", "11" => "陕西", "12" => "山东", "13" => "新疆", "14" => "西藏", "15" => "青海", "16" => "甘肃", "17" => "宁夏", "18" => "河南", "19" => "江苏", "20" => "湖北", "21" => "浙江", "22" => "安徽", "23" => "福建", "24" => "江西", "25" => "湖南", "26" => "贵州", "27" => "四川", "28" => "广东", "29" => "云南", "30" => "广西", "31" => "海南", "32" => "香港", "33" => "澳门", "34" => "台湾" );
function find(&$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),$p); $ccode = get_data_arr($k); echo file_get_contents("http://m.weather.com.cn/data/{$ccode[$k]}.html");
希望本文所述对大家的PHP程序设计有所帮助。
原文链接：https://www.f2er.com/php/22942.html