Share a piece of code for the collection program

看到总有人问curl的问题，这两天没事写了个采集论坛的小程序。里面包括了模拟登陆，获取页面源代码，正则匹配结果等部分，希望对大家有用。

set_time_limit(0);

//cookie保存目录
$cookie_jar = '/tmp/cookie.tmp';

/*函数------------------------------------------------------------------------------------------------------------*/

//模拟请求数据
function request($url,$postfields,$cookie_jar,$referer){
$ch = curl_init();
$options = array(CURLOPT_URL => $url,
  CURLOPT_HEADER => 0,
  CURLOPT_NOBODY => 0,
  CURLOPT_PORT => 80,
  CURLOPT_POST => 1,
  CURLOPT_POSTFIELDS => $postfields,
  CURLOPT_RETURNTRANSFER => 1,
  CURLOPT_FOLLOWLOCATION => 1,
  CURLOPT_COOKIEJAR => $cookie_jar,
  CURLOPT_COOKIEFILE => $cookie_jar,
  CURLOPT_REFERER => $referer
);
curl_setopt_array($ch, $options);
$code = curl_exec($ch);
curl_close($ch);
return $code;
}

//获取帖子列表
function getThreadsList($code){
preg_match_all('/