<?php
//全國(guó)，判斷條件是$REQUEST_URI是否含有html
if (!strpos($_SERVER["REQUEST_URI"],".html"))
{
$page="http://qq.ip138.com/weather/";
$html = file_get_contents($page,'r');
$pattern="/<B>全國(guó)主要城市、縣當(dāng)天和未來(lái)五天天氣趨勢(shì)預(yù)報(bào)在線查詢<\/B>(.*?)<center style=\"padding\:3px\">/si";
//正則匹配之間的html
preg_match($pattern,$html,$pg);
echo "";
//正則替換遠(yuǎn)程地址為本地地址
$p=preg_replace('/\/weather\/(\w+)\/index.htm/', 'tq.php/$1.html', $pg[1]);
echo $p;
}
//省，判斷條件是$REQUEST_URI是否含有？
else if(!strpos($_SERVER["REQUEST_URI"],"?")){
//yoyo推薦的使用分割獲得數(shù)據(jù)，這里是獲得省份名稱
$province=explode("/",$_SERVER["REQUEST_URI"]);
$province=explode(".",$province[count($province)-1]);
$province=$province[0];
//被注釋掉的是我自己寫出來(lái)的正則，感覺寫的不好，但效果等同上面
//preg_match('/[^\/]+[\.(html)]$/',$_SERVER["REQUEST_URI"],$pro);
//$province=preg_replace('/\.html/','',$pro[0]);
$page="http://qq.ip138.com/weather/".$province."/index.htm";
//獲取html數(shù)據(jù)之前先嘗試打開頁(yè)面，防止惡意輸入地址導(dǎo)致出錯(cuò)
if (!@fopen($page, "r")) {
die("對(duì)不起，該地址不存在!<a href=javascript:history.back(1)>點(diǎn)擊這里返回</a>");
exit(0);
}
$html = file_get_contents($page,'r');
$pattern="/五天天氣趨勢(shì)預(yù)報(bào)<\/B>(.*?)請(qǐng)輸入輸入市/si";
preg_match($pattern,$html,$pg);
echo "";
//正則替換，獲取省份，城市
$p=preg_replace('/\/weather\/(\w+)\/(\w+).htm/', '$2.html?pro=$1', $pg[1]);
echo $p;
}
else {
//市，通過(guò)get傳遞省份
$pro=$_REQUEST['pro'];
$city=explode("/",$_SERVER["REQUEST_URI"]);
$city=explode(".",$city[count($city)-1]);
$city=$city[0];
//preg_match('/[^\/]+[\.(html)]+[\?]/',$_SERVER["REQUEST_URI"],$cit);
//$city=preg_replace('/\.html\?/','',$cit[0]);
$page="http://qq.ip138.com/weather/".$pro."/".$city.".htm";
if (!@fopen($page, "r")) {
die("對(duì)不起，該地址不存在!<a href=javascript:history.back(1)>點(diǎn)擊這里返回</a>");
exit(0);
}
$html = file_get_contents($page,'r');
$pattern="/五天天氣趨勢(shì)預(yù)報(bào)<\/B>(.*?)請(qǐng)輸入輸入市/si";
preg_match($pattern,$html,$pg);
echo "";
//獲取真實(shí)的圖片地址
$p=preg_replace('/\/image\//', 'http://qq.ip138.com/image/', $pg[1]);
echo $p;
}
?>