抓取天氣

<?php
set_time_limit(0);

//jiequstr函數定義開始
function jiequstr($mubiaostr,$ksstr,$jsstr)
{if($mubiaostr==''){echo '目標字符串爲空<br/>';return false;}

if($ksstr==''){$jiequks=0;return false;}
else{
$chucuo1=0;
$arr1=explode('(*)',$ksstr);
$len1=count($arr1);
$chaxunwz=0;
$feikongnum1=0;
for($i=0;$i<$len1;$i++){
if($arr1[$i]=='')continue;
$feikongnum1++;
if(($wz=strpos($mubiaostr,$arr1[$i],$chaxunwz))!==false)
$chaxunwz=$wz+strlen($arr1[$i]);
else {$chucuo1=1;return false;break;}

}
if($chucuo1==1)$jiequks=0;
else $jiequks=$chaxunwz;

}

if($jsstr==''){$jiequjs=strlen($mubiaostr);return false;}
else{
$chucuo2=0;
$arr2=explode('(*)',$jsstr);
$len2=count($arr2);
$chaxunwz=$jiequks;
$feikongnum2=0;
for($i=0;$i<$len2;$i++){
if($arr2[$i]=='')continue;
$feikongnum2++;
if(($wz=strpos($mubiaostr,$arr2[$i],$chaxunwz))!==false)
{$chaxunwz=$wz+strlen($arr2[$i]);
if($feikongnum2==1)$enddian=$wz;


}
else {$chucuo2=1;return false;break;}

}
if($chucuo2==1)$jiequjs=strlen($mubiaostr);
else $jiequjs=$enddian;

}
$jiequstr=substr($mubiaostr,$jiequks,$jiequjs-$jiequks);

//echo $jiequstr;
return $jiequstr;

}
//結束jiequstr函數定義
//新建一個返回會話的函數
function jianli_huihua($url,$postdata='',$cookie='',$cookiefile='',$cookiejar='',$useragent='',$referer='',$followlocation=0)
{
        //echo '開始建立與網址：'.$url.'的會話<BR>';
        $huihua=curl_init($url);
        curl_setopt($huihua,CURLOPT_RETURNTRANSFER,1);
        curl_setopt($huihua,CURLOPT_HEADER,1);

        if(!emptyempty($postdata)){//echo '使用post方式建立會話<BR>';
                curl_setopt($huihua,CURLOPT_POST,1);
                curl_setopt($huihua,CURLOPT_POSTFIELDS,$postdata);
        }
        if(!emptyempty($cookie)){//echo '設置請求的cookie：'.$cookie.'<BR>';
                curl_setopt($huihua,CURLOPT_COOKIE,$cookie);
        }
        elseif(!emptyempty($cookiefile)){//echo '不設置請求cookie,設置請求發送的cookie文件：'.$cookiefile.'<BR>';
                curl_setopt($huihua,CURLOPT_COOKIEFILE,$cookiefile);
        }
        if(!emptyempty($cookiejar)){//echo '設置返回的cookie保存文件：'.$cookiejar.'<BR>';
                curl_setopt($huihua,CURLOPT_COOKIEJAR,$cookiejar);
        }
        if(!emptyempty($useragent)){//echo '設置瀏覽器信息：'.$useragent.'<BR>';
                curl_setopt($huihua,CURLOPT_USERAGENT,$useragent);
        }
        if(!emptyempty($referer)){//echo '設置來源網址：'.$referer.'<BR>';
                curl_setopt($huihua,CURLOPT_REFERER,$referer);
        }
        if(!emptyempty($followlocation)){//echo '設置爲跟縱重定向：<BR>';
                curl_setopt($huihua,CURLOPT_FOLLOWLOCATION,1);
        }
        //echo '與網址：'.$url.'的初始化信息建立完畢<BR>';
            return $huihua;
}



        if(!emptyempty($_GET['tijiao'])&&$_GET['tijiao']=='提交')
        {
            if(!function_exists('curl_init'))die('需要開啓curl擴展才行');
                $url1=$_GET['url'];
                $useragent='Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Sicent; WoShiHoney.B)';
                $cookiejar='c:\t7online_cookie.txt';

        if(!file_exists($cookiejar))
        {
                $f=fopen($cookiejar,'w');
                fclose($f);
        }
        $huihua1=jianli_huihua($url1,'','','',$cookiejar,$useragent,'',0);
        $yuanma=curl_exec($huihua1);
        curl_close($huihua1);
        if($url2=jiequstr($yuanma,'<frame src="/cgi-bin/region?','"'))
        {
            $url2='http://www.t7online.com/cgi-bin/region?'.$url2;
            echo 'cgi-bin/region頁url：'.$url2.'<br>';
        }
        else die('<font color=red>錯誤:</font>獲取cgi-bin/region頁url出錯');

        $huihua2=jianli_huihua($url2,'','',$cookiejar,$cookiejar,$useragent,$url1,1);
        $yuanma=curl_exec($huihua2);
        curl_close($huihua2);

        if($url3=jiequstr($yuanma,'<frame src="/cgi-bin/citybild?','"'))
        {
            $url3='http://www.t7online.com/cgi-bin/citybild?'.$url3;
            echo '/cgi-bin/citybild頁url:'.$url3.'<br>';
        }
        else die('<font color=red>錯誤:</font>獲取/cgi-bin/citybild頁url出錯');

        $huihua3=jianli_huihua($url3,'','',$cookiejar,$cookiejar,$useragent,$url2,1);
        $yuanma=curl_exec($huihua3);
        //echo 'result:'.$yuanma.'<br>';
        curl_close($huihua3);
        $f=fopen('tianqi.html','w');
        fputs($f,$yuanma);
        fclose($f);
        echo '<a href="tianqi.html"><font color="#ff0000">點擊查看天氣頁面</font></a>';
        }

        //提供輸入初始天氣頁的表單
        else echo '<form method="get" action="t7online.php">
        請輸入url：(路：http://www.t7online.com/Hubei/Dawu.htm,2級城市天氣)<input type="text" name="url"><input type="submit" name="tijiao" value="提交">
        </form>';


?>