PHP获取当天和72小时天气预报，并生成接口

<?php
    include(&#39;./include/encode.func.php&#39;);
     
    $city = $_GET[&#39;city&#39;] ? intval($_GET[&#39;city&#39;]) : 212; //cq
    $type = $_GET[&#39;type&#39;] ? strtolower(trim($_GET[&#39;type&#39;])) : &#39;json&#39;; //json
    $charset = $_GET[&#39;charset&#39;] ? strtolower(trim($_GET[&#39;charset&#39;])) : &#39;utf-8&#39;; //charset
    $dateType = $_GET[&#39;datetype&#39;] ? strtolower(trim($_GET[&#39;datetype&#39;])) : &#39;unix&#39;; //dateType
     
    if($city < 1)
        exit();
     
    /*Get Weather*/
    $content = &#39;&#39;;
    $fp = fopen(&#39;http://weather.news.qq.com/inc/07_dc&#39; . $city . &#39;.htm&#39;,&#39;r&#39;);
    while(!feof($fp))
        $content .= fread($fp,1024);
    fclose($fp);
     
    $content = str_replace(array("\t","\r","\n"),&#39;&#39;,$content);
    $content = anystring2utf8($content);
    $weather = array();
     
    $a = array();
    preg_match(&#39;/class="px14\stred"><strong>(.[^\&]*)\&#160;(.[^<]*)<\/strong>/i&#39;,$content,$a);
    $weather[&#39;area&#39;] = trim($a[2]);
    $weather[&#39;now&#39;][&#39;date&#39;] = parseDate($a[1]);
     
    preg_match(&#39;/<img\swidth="64"\sheight="64"\ssrc="(.[^"]*)"/i&#39;,$content,$a);
    $weather[&#39;now&#39;][&#39;pic&#39;] = trim($a[1]);
    preg_match(&#39;/bgcolor="#EDF2F8" class="blues">(.[^<]*)<br>(.[^<]*)<\/td>/i&#39;,$content,$a);
    $weather[&#39;now&#39;][&#39;weather&#39;] = trim($a[1]);
    $weather[&#39;now&#39;][&#39;temp&#39;] = trim($a[2]);
    preg_match(&#39;/class="explain\sblues">(.[^<]*)<br>\s*(.[^<]*)<br>\s*(.[^<]*)</i&#39;,$content,$a);
    $weather[&#39;now&#39;][&#39;wind&#39;] = parseMore($a[1]);
    $weather[&#39;now&#39;][&#39;uv&#39;] = parseMore($a[2]);
    $weather[&#39;now&#39;][&#39;air&#39;] = parseMore($a[3]);
     
    preg_match_all(&#39;/bgcolor="#EEEEEE">(.[^<]*)<\/td>(.[^-]*)bgcolor="#EEF3F8">(.[^<]*)<br>(.[^<]*)<br>(.[^<]*)/i&#39;,$content,$a);
     
    foreach($a[0] as $k => $v){
        $weather[&#39;future72&#39;][$k] = array(
            &#39;date&#39; => $dateType == &#39;unix&#39; ? strtotime(trim($a[1][$k])) : trim($a[1][$k]),
            &#39;weather&#39; => trim($a[3][$k]),
            &#39;temp&#39; => trim($a[4][$k]),
            &#39;wind&#39; => trim($a[5][$k]),
            &#39;pic&#39; => parsePic($a[2][$k])
        );
    }
    /*Get exponent*/
    $weather[&#39;exponent&#39;] = array();
    $content = &#39;&#39;;
    $fp = fopen(&#39;http://weather.news.qq.com/inc/07_zs&#39; . $city . &#39;.htm&#39;,&#39;r&#39;);
    while(!feof($fp))
        $content .= fread($fp,1024);
    fclose($fp);
    $content = str_replace(array("\t","\r","\n"),&#39;&#39;,$content);
    $content = anystring2utf8($content);
    preg_match_all(&#39;/<strong>(.[^<]*)<\/strong>:<span\sclass="tred">(.[^<]*)<\/span>.[^:]*width="180">(.[^<]*)<\/td>/i&#39;,$content,$a);
    foreach($a[0] as $k => $v) {
        $weather[&#39;exponent&#39;][$k] = array(
            &#39;name&#39; => trim($a[1][$k]),
            &#39;value&#39; => trim($a[2][$k]),
            &#39;memo&#39; => trim($a[3][$k])
        );
    }
     
    /*Print Result*/
    if ($charset != &#39;utf-8&#39; && $charset != &#39;utf8&#39;)
        $weather = any2gbk($weather);
         
    switch($type) {
        case &#39;json&#39;:
            echo json_encode($weather);
            break;
        case &#39;xml&#39;:
            header("content-type:text/xml");
            $ax = new array2xml($weather,$charset);
            echo $ax->getXML();
            break;
        default:
            echo &#39;<pre class="brush:php;toolbar:false">&#39;;
            print_r($weather);
            echo &#39;

<?php
/**
 * 任何编码字符串转换为utf-8
 *
 * @param string $str 输入字符串
 * @return string 输出utf-8编码字符串
 */
function anystring2utf8($str) {
    $encode = mb_detect_encoding($str,"ASCII,UNICODE,UTF-8,GBK,CP936,EUC-CN,BIG-5,EUC-TW");
    return ($encode != &#39;UTF-8&#39; && $encode != &#39;ASCII&#39; ? iconv($encode,&#39;UTF-8&#39;,$str) : $str);
}
/**
 * 任何编码字符串转换为gbk
 *
 * @param string $str 输入字符串
 * @return string 输出gbk编码字符串
 */
function anystring2gbk($str) {
    $encode = mb_detect_encoding($str,"ASCII,UNICODE,UTF-8,GBK,CP936,EUC-CN,BIG-5,EUC-TW");
    return ($encode != &#39;CP936&#39; && $encode != &#39;ASCII&#39; && $encode != &#39;GBK&#39; ? iconv($encode,&#39;GB18030&#39;,$str) : $str);
}
 
/**
 * 任何编码字符串(数组)转换为utf-8
 *
 * @param mixed $string 输入字符串(数组)
 * @return mixed 输出utf-8编码字符串(数组)
 */
function any2utf8($string) {//通过递归转换字符串编码
    if(is_array($string)) {
        foreach($string as $key => $val) {
            $string[$key] = any2utf8($val); //递归
        }
    } else {
        $string = anystring2utf8($string);
    }
    return $string;
}
/**
 * 任何编码字符串(数组)转换为gbk
 *
 * @param mixed $string 输入字符串(数组)
 * @return mixed 输出gbk编码字符串(数组)
 */
function any2gbk($string) {//通过递归转换字符串编码
    if(is_array($string)) {
        foreach($string as $key => $val) {
            $string[$key] = any2gbk($val); //递归
        }
    } else {
        $string = anystring2gbk($string);
    }
    return $string;
}
?>