Curl实例分析
请查看这个网址http://www.ifengyin.com/ 看一下左边部分查询有一个图片的验证码。同时原网站是：http://www.xianjj.com/左边的查询。
要查询这个就必须先破解原网站这个验证码生成的机制或cookie。
/**
* CURL 获取内容
* @param $durl
* @param string $refer
* @param bool $get_header
* @param bool $hide_body
* @param bool $cookie
* @return mixed
*/
function curl_get_contents($durl, $refer = “”, $get_header = false, $hide_body = true, $cookie = false) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $durl);
curl_setopt($ch, CURLOPT_TIMEOUT, 20);
if ($get_header) {
curl_setopt($ch, CURLOPT_HEADER, 1); //获取Header
if ($hide_body) {
curl_setopt($ch, CURLOPT_NOBODY, true); //Body就不要了吧，我们只是需要Head
}
}
if ($refer != “”) {
$header = array(“Referer: {$refer}”);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
}
if ($cookie) {
curl_setopt($ch, CURLOPT_COOKIE, $cookie);
}
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$r = curl_exec($ch);
curl_close($ch);
return $r;
}
//获取验证码并保存cookie
//获取文件流与cookie
if (!empty($_GET['code']) && $_GET['code'] == “getimage”) {
header(‘Content-type: image/jpeg’);
$url = “http://117.36.53.122:9081/wfcx/imageServlet”;
$ch = curl_init($url); //初始化
curl_setopt($ch, CURLOPT_HEADER, 1); //将头文$related_goods件的信息作为数据流输出
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //返回获取的输出文本流
$content = curl_exec($ch); //执行curl并赋值给$content
curl_close($ch);
preg_match(‘/Set-Cookie:(.*);/iU’, $content, $str); //正则匹配
$data = explode(“rnrn”, $content, 2);
//设置SESSION
$_SESSION['remote_session_id'] = $str[1];
echo $data[1];
exit;
}
//页面输入验证码
$jdccode = $_GET['jdccode']; //验证码
$cookie = $_SESSION['remote_session_id'];
if (!$cookie) {
exit(‘<script>alert(“请重新输入验证码！”);history.back();</script>’);
}
unset($_SESSION['remote_session_id']);
$url = “http://117.36.53.122:9081/wfcx/query.do?actiontype=vioSurveil”
. “&hpzl={$hpzl}&hphm={$hphm}&tj={$tj}&tj_val={$tj_val}&jdccode={$jdccode}”;
$result = curl_get_contents($url, “”, false, false, $cookie);//获取远程内容后面就只是拆分网页了！