求一个php登录的代码

2010-04-26 11:44:53 153 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

用 PHP + MySQL 做一个登录界面用 PHP + MySQL 做一个登录界面详细操作可以看youtube视频： https://www.youtube.com/watch?v=arqv2YVp_3E 前提准备： 1.php+MySQL运行环境 2. 在MySQL中新建 login 数据库，user表单，其中包括username 和 password 两项，然后创建一个用户名和密码。（login,user,username,pas... 阅读详情

MYSQL数据库
数据库名称：nd
表名：user
字段：name/password
求高人给个登录代码请写的详细些我是新手怕看不懂谢谢

...全文

php中在一个php文件调用另一个php的函数，保存登录时保存的用户id login.php部分代码，引用common.php，调用其方法，显示保存过的id php require_once 'common.php'; ?> 密　码是否保存用户ID php //接收errno,先判断errno是否为空，当用户第一次到登录页面的时候error是空的，没有错误提示 if(!empty($ 阅读详情

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切换为时间正序

yahuD 2010-04-27

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4楼真认真，赞一个，结贴前留名

xiongyafen 2010-04-27

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顶顶顶顶顶顶顶

joaryyu 2010-04-27

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4楼的同志都写了，弟兄就不在那个啥了。。。。。。

jonas 2010-04-27

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php技术联盟，新手学习必备参考网站www.diysys.com，

zhouzerong2006 2010-04-27

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这个lz真是个首例

ragnaros87 2010-04-27

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四楼太犀利了，拷走学习学习！

骄傲青蛙 2010-04-27

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no words ...

地雷 2010-04-27

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不会结的吧。。。

HOOLOO 2010-04-27

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还没结贴啊

sciolist 2010-04-26

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这种东西谷歌搜索一下就有，lz怎么不自己动手呢？

1.数据库



--Name the table "dbUsers." It will need 4 fields:

Name             Type                    Addition

id                  int(10)              Primary Key, AUTO_INCREMENT

username            varchar(16)          Unique

password            char(16)          

email               varchar(25)

数据库基类:
dbConfig.php



<?

// Replace the variable values below

// with your specific database information.

$host = "localhost";

$user = "UserName";

$pass = "Password";

$db   = "dbName";



// This part sets up the connection to the

// database (so you don't need to reopen the connection

// again on the same page).

$ms = mysql_pconnect($host, $user, $pass);

if ( !$ms )

{

echo "Error connecting to database.\n";

}



// Then you need to make sure the database you want

// is selected.

mysql_select_db($db);

?>

2.注册功能
register.php



<?php



// dbConfig.php is a file that contains your

// database connection information. This

// tutorial assumes a connection is made from

// this existing file.

include ("dbConfig.php");





//Input vaildation and the dbase code

if ( $_GET["op"] == "reg" )

 {

 $bInputFlag = false;

 foreach ( $_POST as $field )

  {

  if ($field == "")

   {

   $bInputFlag = false;

   }

  else

   {

   $bInputFlag = true;

   }

  }

 // If we had problems with the input, exit with error

 if ($bInputFlag == false)

  {

  die( "Problem with your registration info. "

   ."Please go back and try again.");

  }



 // Fields are clear, add user to database

 //  Setup query

 $q = "INSERT INTO `dbUsers` (`username`,`password`,`email`) "

  ."VALUES ('".$_POST["username"]."', "

  ."PASSWORD('".$_POST["password"]."'), "

  ."'".$_POST["email"]."')";

 //  Run query

 $r = mysql_query($q);

 

 // Make sure query inserted user successfully

 if ( !mysql_insert_id() )

  {

  die("Error: User not added to database.");

  }

 else

  {

  // Redirect to thank you page.

  Header("Location: register.php?op=thanks");

  }

 } // end if





//The thank you page

elseif ( $_GET["op"] == "thanks" )

 {

 echo "<h2>Thanks for registering!</h2>";

 }

 

//The web form for input ability

else

 {

 echo "<form action=\"?op=reg\" method=\"POST\">\n";

 echo "Username: <input name=\"username\" MAXLENGTH=\"16\"><br />\n";

 echo "Password: <input type=\"password\" name=\"password\" MAXLENGTH=\"16\"><br />\n";

 echo "Email Address: <input name=\"email\" MAXLENGTH=\"25\"><br />\n";

 echo "<input type=\"submit\">\n";

 echo "</form>\n";

 }

// EOF

?>

3.登录功能
login.php



<?php

session_start();

// dBase file

include "dbConfig.php";



if ($_GET["op"] == "login")

 {

 if (!$_POST["username"] || !$_POST["password"])

  {

  die("You need to provide a username and password.");

  }

 

 // Create query

 $q = "SELECT * FROM `dbUsers` "

  ."WHERE `username`='".$_POST["username"]."' "

  ."AND `password`=PASSWORD('".$_POST["password"]."') "

  ."LIMIT 1";

 // Run query

 $r = mysql_query($q);



 if ( $obj = @mysql_fetch_object($r) )

  {

  // Login good, create session variables

  $_SESSION["valid_id"] = $obj->id;

  $_SESSION["valid_user"] = $_POST["username"];

  $_SESSION["valid_time"] = time();



  // Redirect to member page

  Header("Location: members.php");

  }

 else

  {

  // Login not successful

  die("Sorry, could not log you in. Wrong login information.");

  }

 }

else

 {

//If all went right the Web form appears and users can log in

 echo "<form action=\"?op=login\" method=\"POST\">";

 echo "Username: <input name=\"username\" size=\"15\"><br />";

 echo "Password: <input type=\"password\" name=\"password\" size=\"8\"><br />";

 echo "<input type=\"submit\" value=\"Login\">";

 echo "</form>";

 }

?>

好了，完了。

lz 结贴吧

thinkinginAOCP 2010-04-26

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把标识登录的用户信息存放在cookie中或者是session中就行了,
$_COOKIE['name'] $_COOKIE['id']等.
有无登录的用户信息->是否登录.

q274256181 2010-04-26

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。。。。刚注册没多久
一共发布了3个问题目前还都没解决

床上等您 2010-04-26

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结帖率 0.00%

求一个php登录的代码

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