php面向对象的用户登录身份验证

2024-05-04 22:47:10

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本文实例为大家分享了php用户登录身份验证的具体代码，供大家参考，具体内容如下

一、代码

conn.php

<?php $conn = new com("adodb.connection");  $connstr="driver={microsoft access driver (*.mdb)}; dbq=". realpath("data/db_database07_188.mdb"); $conn->open($connstr); ?>

index.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>用户身份验证</title> <link rel="stylesheet" type="text/css" href="css/style.css" rel="external nofollow" > <style type="text/css"> <!-- .STYLE1 {color: #FFFFFF} --> </style> </head> <body> <table width="250" border="0" align="center" cellpadding="1" cellspacing="0">  <tr>   <td height="75" bgcolor="#0099CC"><table width="250" height="75" border="0" cellpadding="0" cellspacing="1">    <form name="form1" method="post" action="index.php">    <tr>     <td height="25" colspan="2" bgcolor="#0099CC"><div align="center" class="STYLE1">用户身份验证</div></td>    </tr>    <tr>     <td width="60" height="25" bgcolor="#FFFFFF"><div align="center">用户名：</div></td>     <td width="187" bgcolor="#FFFFFF"><div align="left"> <input type="text" name="username" size="22" class="inputcss"></div></td>    </tr>    <tr>     <td height="25" bgcolor="#FFFFFF"><div align="center">密码：</div></td>     <td height="25" bgcolor="#FFFFFF"><div align="left"> <input type="password" name="userpwd" size="22" class="inputcss"></div></td>    </tr>    <tr>     <td height="25" colspan="2" bgcolor="#FFFFFF"><div align="center"><input name="submit" type="submit" value="登录" class="buttoncss"></div></td>     </tr>     </form>   </table></td>  </tr> </table> <?php if($_POST[submit]!="")  {      $username=$_POST[username];  //接收提交的用户名   $userpwd=$_POST[userpwd];   //接收提交的密码   if(trim($username)==""||trim($userpwd)=="")    {     echo "<script>alert('请输入用户名或用户密码!');history.back();</script>";     exit;    }        class chk   //定义密码验证类    {     private $name;   //定义用户名属性     private $pwd;   //定义密码属性      public function __construct($x,$y)   //构造函数，对类的属性初始化         {       $this->name=$x;       $this->pwd=$y;      }     public function chkuser()   //验证用户身份      {       include_once("conn.php");        $rs=new com("adodb.recordset");     //创建记录集对象       $rs->open("select * from tb_user where username='".$this->name."' and userpwd='".$this->pwd."'",$conn,3,1);        if($rs->eof || $rs->bof)        {         echo "<script>alert('对不起，密码或用户名错误!');history.back();</script>";         exit;        }       else        {         echo "<script>alert('恭喜您登录成功!');history.back();</script>";         exit;        }      }    }   $chk1=new chk($username,$userpwd);  //对密码验证类进行实例化    $chk1->chkuser();   //调用chkuser()方法验证用户身份      } ?> </body> </html>

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