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PHP Cookie login verification techniques explained_PHP tutorial

WBOYOriginal: 2016-07-15 13:35:001123browse

The purpose of building a website is functional integrity. One of the functions is the implementation of user login verification. Below we will introduce to you in detail the

PHP Cookie login verification code example:

< html>
< head>
< title>Login< /title>
< meta http-equiv="Content-Type"
content="text/html; charset=gb2312">
< /head>
< body>
< form name="form1" method="post"
action="login.php">
< table width="300" border="0" align="center"
cellpadding="2" cellspacing="2">
< tr>
< td width="150">< div align="right">
用户名：< /div>< /td>

< td width="150">< input type="text"
name="username">< /td>

< /tr>

< tr>

< td>< div align="right">密码：< /div>< /td>

< td>< input type="password" name="passcode">< /td>

< /tr>

< tr>

< td>< div align="right">Cookie保存时间：< /div>< /td>

< td>< select name="cookie" id="cookie">

< option value="0" selected>浏览器进程< /option>

< option value="1">保存1天< /option>

< option value="2">保存30天< /option>

< option value="3">保存365天< /option>

< /select>< /td>

< /tr>

< /table>



< input type="submit" name="Submit" value="Submit">

< input type="reset" name="Reset" value="Reset">



< /form>

< /body>

< /html>

<ol class="dp-xml"><li class="alt">< ?php </li><li>@mysql_connect("localhost", "root","1981427") //选择数据库之前需要先连接数据库服务器 </li><li class="alt">or die("数据库服务器连接失败"); </li><li>@mysql_select_db("test") //选择数据库mydb </li><li class="alt">or die("数据库不存在或不可用"); </li><li>//获取用户输入 </li><li class="alt">$username = $_POST['username']; </li><li>$passcode = $_POST['passcode']; </li><li class="alt">$cookie = $_POST['cookie']; </li><li>//执行SQL语句 </li><li class="alt">$query = @mysql_query("select username, userflag from users " </li><li>."where username = '$username' and passcode = '$passcode'") </li><li class="alt">or die("SQL语句执行失败"); </li><li>//判断用户是否存在，密码是否正确 </li><li class="alt">if($row = mysql_fetch_array($query)) </li><li>{ </li><li class="alt">if($row['userflag'] == 1 or $row['userflag'] == 0) //判断用户权限信息是否有效 </li><li>{ </li><li class="alt">switch($cookie) //根据用户的选择设置cookie保存时间 </li><li>{ </li><li class="alt">case 0: //保存Cookie为浏览器进程 </li><li>setcookie("username", $row['username']); </li><li class="alt">break; </li><li>case 1: //保存1天 </li><li class="alt">setcookie("username", $row['username'], time()+24*60*60); </li><li>break; </li><li class="alt">case 2: //保存30天 </li><li>setcookie("username", $row['username'], time()+30*24*60*60); </li><li class="alt">break; </li><li>case 3: //保存365天 </li><li class="alt">setcookie("username", $row['username'], time()+365*24*60*60); </li><li>break; </li><li class="alt">} </li><li>header("location: main.php"); //自动跳转到main.php </li><li class="alt">} </li><li>else </li><li class="alt">{ </li><li>echo "用户权限信息不正确"; </li><li class="alt">} </li><li>} </li><li class="alt">else </li><li>{ </li><li class="alt">echo "用户名或密码错误"; </li><li>} </li><li class="alt">?> </li></ol>

PHP Cookie登录验证代码实例：

<ol class="dp-xml"> <li class="alt">< ?php </li><li>session_start(); </li><li class="alt">if(isset($_COOKIE['username'])) </li><li>{ </li><li class="alt">@mysql_connect("localhost", "root","1981427") </li><li class="alt">//选择数据库之前需要先连接数据库服务器 </li><li>or die("数据库服务器连接失败"); </li><li class="alt">@mysql_select_db("test") //选择数据库mydb </li><li>or die("数据库不存在或不可用"); </li><li class="alt">//获取Session </li><li>$username = $_COOKIE['username']; </li><li class="alt">//执行SQL语句获得userflag的值 </li><li>$query = @mysql_query("select userflag from users " </li><li class="alt">."where username = '$username'") </li><li>or die("SQL语句执行失败"); </li><li class="alt">$row = mysql_fetch_array($query); </li><li>//获得用户权限信息 </li><li class="alt">$flag = $row['userflag']; </li><li>//根据userflag的值输出不同的欢迎信息 </li><li class="alt">if($flag == 1) </li><li>echo "欢迎管理员".$_SESSION['username'] ."登录系统"; </li><li class="alt">if($flag == 0) </li><li>echo "欢迎用户".$_SESSION['username'] ."登录系统"; </li><li class="alt">echo "< a href="logout.php" href="logout.php">注销< /a>"; </li> <li>} </li> <li class="alt">else </li> <li>{ </li> <li class="alt">echo "您没有权限访问本页面"; </li> <li>} </li> <li class="alt"> ?> </li> <li> < ?php </li><li class="alt">setcookie("username"); </li><li>echo "注销成功"; </li><li class="alt">?> </li> </ol>

以上及时PHP Cookie登录验证的实现方法。

http://www.bkjia.com/PHPjc/445946.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/445946.htmlTechArticle一个网站的建设目的就是功能的完整性。其中有一个功能就是用户登录验证的实现。下面我们就向大家详细介绍有关 PHP Cookie登录验证代码...

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