php用户登录代码,cookie,数据库

时间：2015-01-23 来源：西部数据作者：西部数据

下面我们要讲到二种用户登录方法一种是利用window验证加数据库密码验证实现登录,后者是利用cookie记录用户信息进行登录,有需要的朋友可以试下.

<?php

   function authenticate_user() {

      header('WWW-Authenticate: Basic realm="Secret Stash"');

      header("HTTP/1.0 401 Unauthorized");

      exit;

   }

   if (! isset($_SERVER['PHP_AUTH_USER'])) {

      authenticate_user();

   } else {

      mysql_pconnect("localhost","authenticator","secret") or die("Can't connect to database server!");

      mysql_select_db("java2s") or die("Can't select authentication database!");

      $query = "SELECT username, ps教程wd FROM user WHERE username='$_SERVER[PHP_AUTH_USER]' AND pswd=MD5('$_SERVER[PHP_AUTH_PW]')";

//开源代码phpfensi.com

      $result = mysql_query($query);

      // If nothing was found, reprompt the user for the login www.111cn.net information.

      if (mysql_num_rows($result) == 0) {

         authenticate_user();

      }

   }

?>

利用cookie登录方法,实例代码如下:

<html>

  <head>

  <title>Enter Password</title>

  </head>

  <body>

  <form name="forml" method="POST" action="CookieBasedPasswordLogin.php">

    <table>

      <tr>

       <td colspan="2" >

         <div align="center"><b>Please Specify the Password</b></div>

       </td>

     </tr>

   <tr>>

     <td>

       <div align="right">Customer ID</div>

     </td>

     <td>

       <input type="text" name="username">

     </td>

   </tr>

   <tr>

     <td>

       <div align="right">Password</div>

     </td>

     <td>

       <input type="password" name="password">

     </td>

   </tr>

   <tr>

     <td colspan="2">

       <center>

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

       </center>

     </td>

    </tr>

   </table>

  </form>

  </body>

  </html>

<!-- CookieBasedPasswordLogin.php

<?php

    $now = getdate();

    $storetime= $now["weekday"] . " " . $now["month"] ." " . $now["year"] ;

    $storetime.=" Time : ";

    if ($now["hours"] < 10) {

      $storetime.= "0" . $now["hours"];

    } else {

      $storetime.= $now["hours"];

    }



    $storetime.= ":";

    if ($now["minutes"]<10) {

      $storetime.= "0" . $now["minutes"];

    } else {

      $storetime.= $now["minutes"];

    }



    $storetime.= ": ";

    if ($now["seconds"] <10) {

      $storetime.= "0" . $now["seconds"];

    } else {

      $storetime.= $now["seconds"];

    }

    if (isset($data)) {

       $counter=++$data[l];

        setcookie("data[0]",$storetime,time() + (60*60*24));

        setcookie("data[l]", $counter,time() + (60*60*24)); setcookie("data[2]",$username,time() + (60*60*24));

        echo "<b><center>Hi " . $data[2] . " ! !</center></b><br>n";

        echo "<b><center>Last Login Time :" .$data[0] . "</center></b><br>n";

        echo "<b><center>Current Date :" .$storetime. "</center></b><br>n";

        echo "<b><center>Page View Count :" . $data[l]. "</center></b><br>n";

        echo "<b><center>You have successfully logged in!</center></b>";

        echo ("<b><contor>You can access this area without entering a password for the next 24 hours!</center></b>");

   } else {

    if (isset($username) && isset($password)) {

     if ($password=="superpass") {

          $counter=0;

          setcookie("data[0]",$storetime,time() + (60*60*24));

          setcookie("data[l]",$counter,time() + (60*60*24));

          setcookie("data[2]",$username,time() + (60*60*24));

          $url="Location: cookieimp.php";

          header($url);

     }else{

          echo "<hl><center>INVALID PASSWORD!!!</center></hl>";

     }

    }

  }

  ?>