curl post登录 抓取重定向网址

现在网站都做得贼拉恶心，boss要做个抓取程序，别人的网站要求登录，登录入口就一个，用curl写了个，死活不行，抓包一看才发下丫的做了n次跳转，无耻呀～～这不是逼我嘛～～招了n就没找到现成的～～唉自个动手吧～～～存个档

<?php

set_time_limit(1000);

$timeout = 1000; //超时时间

$cookie_jar = tempnam('./','cookie');//cookie

function curl_redirect_exec($ch, &$redirects, $curlopt_returntransfer = false, $curlopt_maxredirs = 10, $curlopt_header = false) {

curl_setopt($ch, CURLOPT_HEADER, true);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$data = curl_exec($ch);

$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

$exceeded_max_redirects = $curlopt_maxredirs > $redirects;

$exist_more_redirects = false;

if ($http_code == 301 || $http_code == 302) {

if ($exceeded_max_redirects) {

list($header) = explode("\r\n\r\n", $data, 2);

$matches = array();

preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);

$url = trim(array_pop($matches));

$url_parsed = parse_url($url);

if (isset($url_parsed)) {

curl_setopt($ch, CURLOPT_URL, $url);

$redirects++;

return curl_redirect_exec($ch, $redirects, $curlopt_returntransfer, $curlopt_maxredirs, $curlopt_header);

}

} else {

$exist_more_redirects = true;

}

}

if ($data !== false) {

if (!$curlopt_header)

list(,$data) = explode("\r\n\r\n", $data, 2);

if ($exist_more_redirects) return false;

if ($curlopt_returntransfer) {

return $data;

} else {

if (curl_errno($ch) === 0) return true;

else return false;

}

} else {

return false;

}

}

$useragent="Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C)";

$request="user=user&pwd=pwd";

$loginurl ="login.asp";

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $loginurl);

curl_setopt($ch, CURLOPT_REFERER, 'index.asp');

curl_setopt($ch,CURLOPT_USERAGENT,$useragent);

curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);

curl_setopt($ch, CURLOPT_UNRESTRICTED_AUTH, 1);

curl_setopt($ch, CURLOPT_NOBODY, 1);

curl_setopt($ch, CURLOPT_HEADER, false);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, $request);

curl_exec($ch);

$info = curl_getinfo($ch);

curl_close($ch);

@unlink($cookie_jar);

?>