通过curl登录访问的PHP代码

3. $data='username=zjzhoufy@126.com&password=1q2w3e&remember=1';
4. $curlobj = curl_init(); // 初始化
5. curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/user/login"); // 设置访问网页的URL
6. curl_setopt($curlobj, CURLOPT_RETURNTRANSFER, true); // 执行之后不直接打印出来
8. // Cookie相关设置，这部分设置需要在所有会话开始之前设置
9. date_default_timezone_set('PRC'); // 使用Cookie时，必须先设置时区
10. curl_setopt($curlobj, CURLOPT_COOKIESESSION, TRUE);
11. curl_setopt($curlobj, CURLOPT_COOKIEJAR, 'cookie.txt '); //保存
12. curl_setopt($curlobj, CURLOPT_COOKIEFILE, 'cookie.txt '); //读取
13. curl_setopt($curlobj, CURLOPT_HEADER, 0);
14. curl_setopt($curlobj, CURLOPT_FOLLOWLOCATION, 1); // 这样能够让cURL支持页面链接跳转
15. curl_setopt($curlobj, CURLOPT_COOKIE,session_name().'='.session_id());
17. curl_setopt($curlobj, CURLOPT_POST, 1);
18. curl_setopt($curlobj, CURLOPT_POSTFIELDS, $data);
19. curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("application/x-www-form-urlencoded; charset=utf-8",
20. "Content-length: ".strlen($data)
21. ));
22. curl_exec($curlobj); // 执行
23. curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/space/index");
24. curl_setopt($curlobj, CURLOPT_POST, 0);
25. curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("Content-type: text/xml"
26. ));
27. $output=curl_exec($curlobj); // 执行
28. curl_close($curlobj); // 关闭cURL
29. echo $output;
30. ?>

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

1. CURLOPT_COOKIESESSION

如下即可

2. $data='username=demo_demo@126.com&password=123456qwe&remember=1';
3. $curlobj = curl_init(); // 初始化
4. curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/user/login"); // 设置访问网页的URL
5. curl_setopt($curlobj, CURLOPT_RETURNTRANSFER, true); // 执行之后不直接打印出来
7. // Cookie相关设置，这部分设置需要在所有会话开始之前设置
8. date_default_timezone_set('PRC'); // 使用Cookie时，必须先设置时区
9. curl_setopt($curlobj, CURLOPT_COOKIESESSION, TRUE);
10. curl_setopt($curlobj, CURLOPT_HEADER, 0);
11. curl_setopt($curlobj, CURLOPT_COOKIE,session_name().'='.session_id());
12. // 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
13. //curl_setopt($curlobj, CURLOPT_FOLLOWLOCATION, 1);
15. curl_setopt($curlobj, CURLOPT_POST, 1);
16. curl_setopt($curlobj, CURLOPT_POSTFIELDS, $data);
17. curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("application/x-www-form-urlencoded; charset=utf-8",
18. "Content-length: ".strlen($data)
19. ));
20. curl_exec($curlobj); // 执行
21. curl_setopt($curlobj, CURLOPT_URL, "http://www.imooc.com/space/index");
22. curl_setopt($curlobj, CURLOPT_POST, 0);
23. curl_setopt($curlobj, CURLOPT_HTTPHEADER, array("Content-type: text/xml"
24. ));
25. $output=curl_redir_exec($curlobj); // 执行
26. curl_close($curlobj); // 关闭cURL
27. echo $output;
29. /**
30. * 自定义实现页面链接跳转抓取
31. */
32. function curl_redir_exec($ch,$debug="")
33. {
34. static $curl_loops = 0;
35. static $curl_max_loops = 20;
37. if ($curl_loops++ >= $curl_max_loops)
38. {
39. $curl_loops = 0;
40. return FALSE;
41. }
42. curl_setopt($ch, CURLOPT_HEADER, true); // 开启header才能够抓取到重定向到的新URL
43. curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
44. $data = curl_exec($ch);
45. // 分割返回的内容
46. $h_len = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
47. $header = substr($data,0,$h_len);
48. $data = substr($data,$h_len - 1);
50. $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
51. if ($http_code == 301 || $http_code == 302) {
52. $matches = array();
53. preg_match('/Location:(.*?)\n/', $header, $matches);
54. $url = @parse_url(trim(array_pop($matches)));
55. // print_r($url);
56. if (!$url)
57. {
58. //couldn't process the url to redirect to
59. $curl_loops = 0;
60. return $data;
61. }
62. $last_url = parse_url(curl_getinfo($ch, CURLINFO_EFFECTIVE_URL));
63. if (!isset($url['scheme']))
64. $url['scheme'] = $last_url['scheme'];
65. if (!isset($url['host']))
66. $url['host'] = $last_url['host'];
67. if (!isset($url['path']))
68. $url['path'] = $last_url['path'];
70. $new_url = $url['scheme'] . '://' . $url['host'] . $url['path'] . (isset($url['query'])?'?'.$url['query']:'');
71. curl_setopt($ch, CURLOPT_URL, $new_url);
73. return curl_redir_exec($ch);
74. } else {
75. $curl_loops=0;
76. return $data;
77. }
78. }
79. ?>