PHP file_get_contents function to easily capture ip138 data

<?php Tutorial
Nationally, the criterion is whether $request_uri contains HTML
if (!strpos ($_server["Request_uri"], ". html"))
{
$page = "http://qq.ip138.com/weather/";
$html = file_get_contents ($page, ' R ');
$pattern = "/<b> National main cities, counties and the next five days of weather trend forecast online Inquiry </B> (. *?) <center style= "padding:3px" >/si ";
The HTML between regular matches
Preg_match ($pattern, $html, $PG);
echo "";
Regular replace remote address as local address
$p =preg_replace ('//weather/(w+)/index.htm/', ' tq.php/$1.html ', $PG [1]);
Echo $p;
}
Province, the judge condition is whether $request_uri contains?
else if (!strpos ($_server["Request_uri"], "?")) {
Yoyo recommended using segmentation to get data here is the name of the province
$province =explode ("/", $_server["Request_uri"]);
$province =explode (".", $province [Count ($province)-1]);
$province = $province [0];
Be commented out is my own writing out of the regular, feel bad writing, but the effect is equal to the above
Preg_match ('/[^/]+[. html)]$/', $_server["Request_uri"], $pro);
$province =preg_replace ('/.html/', ', $pro [0]);
$page = "http://qq.ip138.com/weather/". $province. " /index.htm ";
Try to open the page before getting the HTML data to prevent the malicious input address from causing an error
if (! @fopen ($page, "R")) {
Die ("Sorry, the address does not exist!<a Href=javascript Tutorial: History.back (1) > Click here to return </a>");
Exit (0);
}
$html = file_get_contents ($page, ' R ');
$pattern = "/Five Weather trend Forecast </B> (. *?) Please input the city/si ";
Preg_match ($pattern, $html, $PG);
echo "";
Regular substitution, acquisition of provinces, cities
$p =preg_replace ('//weather/(w+)/(w+). htm/', ' $2.html?pro=$1 ', $PG [1]);
Echo $p;
}
else {
City, passing the provinces through get
$pro =$_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 ("Sorry, the address does not exist!<a Href=javascript:history.back (1) > Click here to return </a>");
Exit (0);
}
$html = file_get_contents ($page, ' R ');
$pattern = "/Five Weather trend Forecast </B> (. *?) Please input the city/si ";
Preg_match ($pattern, $html, $PG);
echo "";
Get the real picture address
$p =preg_replace ('//image//', ' http://qq.ip138.com/image/', $PG [1]);
Echo $p;
}
?>