PHP 模拟登陆功能实例详解

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

<form method=\"post\" class=\"am-form\" action=\"judge.php\">
   <label for=\"sid\">学号:</label>
   <input type=\"text\" name=\"number\" id=\"sid\" value=\"\">
   <br>
   <label for=\"password\">密码:</label>
   <input type=\"password\" name=\"passwd\" id=\"password\" value=\"\">
   <br>
   <div class=\"am-cf\">
    <input type=\"submit\" name=\"\" value=\"登 录\" class=\"am-btn am-btn-primary am-btn-sm am-fl\">
    <input type=\"submit\" name=\"\" value=\"忘记密码 ^_^? \" class=\"am-btn am-btn-default am-btn-sm am-fr\">
   </div>
  </form>

judge.php

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

curl.php

<?php
function run_curl($content_url,$number=\'\',$passwd=\'\'){
  $cookie_file = tempnam(\'./temp\',\'cookie\');
  $url = \"http://opac.lib.ustc.edu.cn/reader/redr_verify.php\";
  $ch = curl_init($url);
  curl_setopt($ch, CURLOPT_HEADER, 0);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);
  $post_fileds = \"number=$number&passwd=$passwd&select=bar_no\";
  curl_setopt($ch,CURLOPT_POST,1);
  curl_setopt($ch,CURLOPT_POSTFIELDS,$post_fileds);
  curl_setopt($ch,CURLOPT_COOKIEFILE,$cookie_file);
  curl_setopt($ch,CURLOPT_COOKIEJAR,$cookie_file);
  $content = curl_exec($ch);
  curl_close($ch);
  $ch = curl_init($content_url);
  curl_setopt($ch, CURLOPT_HEADER, 0);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);
  curl_setopt($ch,CURLOPT_COOKIEFILE,$cookie_file);
  curl_setopt($ch,CURLOPT_COOKIEJAR,$cookie_file);
  $res = curl_exec($ch);
  curl_close($ch);
  return $res;
}

index.php

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

logout.php

<?php
session_start();
$_SESSION = array();
session_destroy();
?>
<script>window.location.href=\'login.php\'</script>

更多关于PHP相关内容感兴趣的读者可查看本站专题：《php curl用法总结》、《PHP网络编程技巧总结》、《PHP数组(Array)操作技巧大全》、《php字符串(string)用法总结》、《PHP数据结构与算法教程》及《PHP中json格式数据操作技巧汇总》

希望本文所述对大家PHP程序设计有所帮助。