这篇文章主要介绍了PHP如何获取Cookie并实现模拟登录,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下。

一、定义Cookie存储路径

必须使用绝对路径

$cookie_jar = dirname(__FILE__)."/pic.cookie";

二、获取Cookie

将cookie存入文件

1. $url = "http://1.2.3.4/";
2. $ch = curl_init();
3. curl_setopt($ch, CURLOPT_URL, $url);
4. curl_setopt($ch, CURLOPT_HEADER, 0);
5. curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
6. curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_jar);
7. $content = curl_exec($ch);
8. curl_close($ch);

三、模拟浏览器获取验证码

该服务器验证码有漏洞，可以自己指定

取出cookie，一起提交给服务器，让服务器以为是浏览器打开登陆页面

1. $ch = curl_init();
2. curl_setopt($ch, CURLOPT_URL, 'http://1.2.3.4/getCheckpic.action?rand=6836.185874812305');
3. curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
4. curl_setopt($ch, CURLOPT_HEADER, 0);
5. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
6. $ret = curl_exec($ch);
7. curl_close($ch);

四、POST提交

1. $post = "name=2&userType=1&passwd=asdf&loginType=1&rand=6836&imageField.x=25&imageField.y=7";
2. $ch = curl_init();
3. curl_setopt($ch, CURLOPT_URL, "http://1.2.3.4/loginstudent.action");
4. curl_setopt($ch, CURLOPT_HEADER, false);
5. curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
6. curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
7. curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
8. $result=curl_exec($ch);
9. curl_close($ch);

五、到指定页面获取数据

1. $ch = curl_init();
2. curl_setopt($ch, CURLOPT_URL, "http://1.2.3.4/accountcardUser.action");
3. curl_setopt($ch, CURLOPT_HEADER, false);
4. curl_setopt($ch, CURLOPT_HEADER, 0);
5. curl_setopt($ch, CURLOPT_RETURNTRANSFER,0);
6. curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_jar);
7. $html=curl_exec($ch);
8. // var_dump($html);
9. curl_close($ch);