PHP curl登录访问

<?php$data='username=zjzhoufy@126.com&password=1q2w3e&remember=1';$curlobj = curl_init();			// 初始化curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/user/login");		// 设置访问网页的URLcurl_setopt($curlobj, CURLOPT_RETURNTRANSFER, true);			// 执行之后不直接打印出来// Cookie相关设置，这部分设置需要在所有会话开始之前设置date_default_timezone_set('PRC'); // 使用Cookie时，必须先设置时区curl_setopt($curlobj, CURLOPT_COOKIESESSION, TRUE); curl_setopt($curlobj, CURLOPT_COOKIEJAR, 'cookie.txt '); //保存curl_setopt($curlobj, CURLOPT_COOKIEFILE, 'cookie.txt '); //读取curl_setopt($curlobj, CURLOPT_HEADER, 0); curl_setopt($curlobj, CURLOPT_FOLLOWLOCATION, 1); // 这样能够让cURL支持页面链接跳转curl_setopt($curlobj, CURLOPT_COOKIE,session_name().'='.session_id()); curl_setopt($curlobj, CURLOPT_POST, 1);  curl_setopt($curlobj, CURLOPT_POSTFIELDS, $data);  curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("application/x-www-form-urlencoded; charset=utf-8", 	"Content-length: ".strlen($data)	)); curl_exec($curlobj);	// 执行curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/space/index");curl_setopt($curlobj, CURLOPT_POST, 0);  curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("Content-type: text/xml"	)); $output=curl_exec($curlobj);	// 执行curl_close($curlobj);			// 关闭cURLecho $output;?>

如上代码并不完美，我们应该把cookie存到缓存中，不应该持久化，并且这样的持久化只能是单用户访问才行。

所以，其实我们只要设置

CURLOPT_COOKIESESSION

如下即可

<?php$data='username=demo_demo@126.com&password=123456qwe&remember=1';$curlobj = curl_init();			// 初始化curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/user/login");		// 设置访问网页的URLcurl_setopt($curlobj, CURLOPT_RETURNTRANSFER, true);			// 执行之后不直接打印出来// Cookie相关设置，这部分设置需要在所有会话开始之前设置date_default_timezone_set('PRC'); // 使用Cookie时，必须先设置时区curl_setopt($curlobj, CURLOPT_COOKIESESSION, TRUE); curl_setopt($curlobj, CURLOPT_HEADER, 0); curl_setopt($curlobj, CURLOPT_COOKIE,session_name().'='.session_id()); // 注释掉这行，因为这个设置必须关闭安全模式 以及关闭open_basedir，对服务器安全不利//curl_setopt($curlobj, CURLOPT_FOLLOWLOCATION, 1);  curl_setopt($curlobj, CURLOPT_POST, 1);  curl_setopt($curlobj, CURLOPT_POSTFIELDS, $data);  curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("application/x-www-form-urlencoded; charset=utf-8", 	"Content-length: ".strlen($data)	)); curl_exec($curlobj);	// 执行curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/space/index");curl_setopt($curlobj, CURLOPT_POST, 0);  curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("Content-type: text/xml"	)); $output=curl_redir_exec($curlobj);	// 执行curl_close($curlobj);			// 关闭cURLecho $output;/** * 自定义实现页面链接跳转抓取 */function curl_redir_exec($ch,$debug="") {     static $curl_loops = 0;     static $curl_max_loops = 20;     if ($curl_loops++ >= $curl_max_loops)     {         $curl_loops = 0;         return FALSE;     }     curl_setopt($ch, CURLOPT_HEADER, true); // 开启header才能够抓取到重定向到的新URL    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);     $data = curl_exec($ch);     // 分割返回的内容    $h_len = curl_getinfo($ch, CURLINFO_HEADER_SIZE);     $header = substr($data,0,$h_len);    $data = substr($data,$h_len - 1);    $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);     if ($http_code == 301 || $http_code == 302) {         $matches = array();         preg_match('/Location:(.*?)\n/', $header, $matches);         $url = @parse_url(trim(array_pop($matches)));         // print_r($url);         if (!$url)         {             //couldn't process the url to redirect to             $curl_loops = 0;             return $data;         }         $last_url = parse_url(curl_getinfo($ch, CURLINFO_EFFECTIVE_URL));         if (!isset($url['scheme']))             $url['scheme'] = $last_url['scheme'];         if (!isset($url['host']))             $url['host'] = $last_url['host'];         if (!isset($url['path']))             $url['path'] = $last_url['path'];        $new_url = $url['scheme'] . '://' . $url['host'] . $url['path'] . (isset($url['query'])?'?'.$url['query']:'');         curl_setopt($ch, CURLOPT_URL, $new_url);         return curl_redir_exec($ch);     } else {         $curl_loops=0;         return $data;     } } ?>