php 模拟登录验证码demo（PHP 模拟登陆功能实例详解）

php 模拟登录验证码demo

本文实例讲述了PHP 模拟登陆功能。分享给大家供大家参考，具体如下：

说明：该模拟登陆实例仅适用于没有验证码的模拟登陆实例

该程序基本功能是，模拟登陆高校图书馆网站，并获取读者信息和借书信息。

程序截图：

目录结构：

login.php

1. <form method="post" class="am-form" action="judge.php">
2. <label for="sid">学号:</label>
3. <input type="text" name="number" id="sid" value="">
4. <br>
5. <label for="password">密码:</label>
6. <input type="password" name="passwd" id="password" value="">
7. <br>
8. <li class="am-cf">
9. <input type="submit" name="" value="登 录" class="am-btn am-btn-primary am-btn-sm am-fl">
10. <input type="submit" name="" value="忘记密码 ^_^? " class="am-btn am-btn-default am-btn-sm am-fr">
11. </li>
12. </form>

judge.php

1. session_start();
2. require_once 'curl.php';
3. $url = "http://opac.lib.ustc.edu.cn/reader/redr_info.php";
4. $number = $_POST['number'];
5. $passwd = $_POST['passwd'];
6. $res = run_curl($url,$number,$passwd);
7. $pattern = '/<TD><span class=\"bluetext\">姓名：<\/span>(.*)<\/TD>/';
8. preg_match($pattern, $res,$arr1);
9. if(is_array($arr1)){
10. $_SESSION['number'] = $number;
11. $_SESSION['passwd'] = $passwd;
12. $_SESSION['name'] = $arr1[1];
13. echo "<script>window.location.href='index.php';</script>";
14. }else{
15. echo "<script>history.go(-1);</script>";
16. }

curl.php

1. <?php
2. function run_curl($content_url,$number='',$passwd=''){
3. $cookie_file = tempnam('./temp','cookie');
4. $url = "http://opac.lib.ustc.edu.cn/reader/redr_verify.php";
5. $ch = curl_init($url);
6. curl_setopt($ch, CURLOPT_HEADER, 0);
7. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
8. curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);
9. $post_fileds = "number=$number&passwd=$passwd&select=bar_no";
10. curl_setopt($ch,CURLOPT_POST,1);
11. curl_setopt($ch,CURLOPT_POSTFIELDS,$post_fileds);
12. curl_setopt($ch,CURLOPT_COOKIEFILE,$cookie_file);
13. curl_setopt($ch,CURLOPT_COOKIEJAR,$cookie_file);
14. $content = curl_exec($ch);
15. curl_close($ch);
16. $ch = curl_init($content_url);
17. curl_setopt($ch, CURLOPT_HEADER, 0);
18. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
19. curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);
20. curl_setopt($ch,CURLOPT_COOKIEFILE,$cookie_file);
21. curl_setopt($ch,CURLOPT_COOKIEJAR,$cookie_file);
22. $res = curl_exec($ch);
23. curl_close($ch);
24. return $res;
25. }

index.php

1. <?php
2. session_start();
3. $number = $_SESSION['number'];
4. $passwd = $_SESSION['passwd'];
5. $username = $_SESSION['name'];
6. if($number==''||$passwd==''||$username==''){
7. echo "<script>window.location.href='login.php';</script>";
8. exit();
9. }
10. require_once 'curl.php';
11. header('Content-type:text/html;charset=utf-8');
12. $url = "http://opac.lib.ustc.edu.cn/reader/book_lst.php";
13. $res = run_curl($url,$number,$passwd); //通过curl抓取数据
14. $pattern = '/<td class="whitetext" width="35%"><a class="blue" href="(.*)" rel="external nofollow" >(.*)<\/a>/';//正则匹配获得图书信息
15. preg_match_all($pattern, $res,$book_arr);
16. $booklist = array();
17. $booklist = $book_arr[2]; //借阅图书列表
18. //var_dump($booklist);
19. $pattern = '/<font color=(red|)>(.*)<\/font>/';//正则匹配获得还书信息
20. preg_match_all($pattern, $res,$date_arr);
21. $datelist = array();
22. $datelist = $date_arr[2]; //应归还日期列表
23. $taglist = array();
24. $taglist = $date_arr[1]; //标记是否超期
25. //var_dump($date_arr);
26. ?>

logout.php

1. <?php
2. session_start();
3. $_SESSION = array();
4. session_destroy();
5. ?>
6. <script>window.location.href='login.php'</script>

希望本文所述对大家PHP程序设计有所帮助。

原文链接：https://blog.csdn.net/koastal/article/details/50273997