php mysql 留言本应用实例第1/2...-php cookie 登录验证示例代码-php 删除cookie和浏览器重定向

当前位置: 编程技术>php

本页文章导读:

▪php mysql 留言本应用实例第1/2页代码如下:<?php $hostname_conn = "localhost"; $database_conn = "test"; $username_conn = "root"; $password_conn = "1981427"; $conn = mysql_connect($hostname_conn, $username_conn, $password_conn); ?> 代码如下:<?php //该函数用于将.........

▪php cookie 登录验证示例代码代码如下:<html> <head> <title>Login</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> </head> <body> <form name="form1" method="post" action="/blog_article/login.html"> <table width=.........

▪php 删除cookie和浏览器重定向代码如下:<?php if(isset($_COOKIE["username"])) { header("location:main.php"); } else { echo "cookie没有找到"; } ?> 代码如下:<?php setcookie("username"); //删除cookie ?> ......

[1]php mysql 留言本应用实例第1/2页

来源: 互联网发布时间: 2013-11-30

代码如下:

<?php
$hostname_conn = "localhost";
$database_conn = "test";
$username_conn = "root";
$password_conn = "1981427";
$conn = mysql_connect($hostname_conn, $username_conn, $password_conn);
?>

代码如下:

<?php
//该函数用于将一般字符串转换成SQL语句所需要的格式
function GetSQLValueString($theValue, $theType)
{
$theValue = (!get_magic_quotes_gpc()) ? addslashes($theValue) : $theValue;

switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
}
return $theValue;
}
?>

代码如下:

<?php
session_start();

//如果Session不存在，则跳转到Admin.php
if (!(isset($_SESSION['MM_Username']))) {
header("Location: admin.php");
exit;
}
?>

代码如下:

<?php require_once('Connections/conn.php'); ?>
<?php
// *** Validate request to login to this site.
session_start();

$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($accesscheck)) {
$GLOBALS['PrevUrl'] = $accesscheck;
session_register('PrevUrl');
}

if (isset($_POST['username'])) {
$loginUsername=$_POST['username'];
$password=$_POST['password'];
$MM_fldUserAuthorization = "";
$MM_redirectLoginSuccess = "adminmain.php";
$MM_redirectLoginFailed = "admin.php";
$MM_redirecttoReferrer = false;
mysql_select_db($database_conn, $conn);

$LoginRS__query=sprintf("SELECT adminname, password FROM admin WHERE adminname='%s' AND password='%s'",
get_magic_quotes_gpc() ? $loginUsername : addslashes($loginUsername), get_magic_quotes_gpc() ? $password : addslashes($password));

$LoginRS = mysql_query($LoginRS__query, $conn) or die(mysql_error());
$loginFoundUser = mysql_num_rows($LoginRS);
if ($loginFoundUser) {
$loginStrGroup = "";

//declare two session variables and assign them
$GLOBALS['MM_Username'] = $loginUsername;
$GLOBALS['MM_UserGroup'] = $loginStrGroup;

//register the session variables
session_register("MM_Username");
session_register("MM_UserGroup");

if (isset($_SESSION['PrevUrl']) && false) {
$MM_redirectLoginSuccess = $_SESSION['PrevUrl'];
}
header("Location: " . $MM_redirectLoginSuccess );
}
else {
header("Location: ". $MM_redirectLoginFailed );
}
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css"></style><style type="text/css" bogus="1">.style1 {font-size: 18px;
font-weight: bold;
}
.style2 {font-size: 14px}</style>
</head>

<body>
<p align="center"><span >留言板 - 管理登陆</span></p>
<p align="center"><span ><a href="/blog_article/viewposts.html" href="/blog_article/viewposts.html">浏览留言</a> | <a href="/blog_article/newpost.html" href="/blog_article/newpost.html">发表留言</a></span></p>
<form name="form1" method="POST" action="/blog_article/</php echo $loginFormAction; /gt;.html">
<table width="239" border="0" align="center">
<tr>
<td width="73">用户名：</td>
<td width="156"><input name="username" type="text" id="username"></td>
</tr>
<tr>
<td>密码：</td>
<td><input name="password" type="password" id="password"></td>
</tr>
<tr>
<td> </td>
<td><input type="submit" name="Submit" value="提交">
<input type="reset" name="Submit2" value="重设"></td>
</tr>
</table>
</form>
<p align="center"> </p>
</body>
</html>

[2]php cookie 登录验证示例代码

来源: 互联网发布时间: 2013-11-30

代码如下:

<html>
<head>
<title>Login</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>

<body>
<form name="form1" method="post" action="/blog_article/login.html">
<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>
<p align="center">
<input type="submit" name="Submit" value="Submit">
<input type="reset" name="Reset" value="Reset">
</p>
</form>
</body>
</html>

代码如下:

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

代码如下:

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

代码如下:

<?php
setcookie("username");
echo "注销成功";
?>

[3]php 删除cookie和浏览器重定向

来源: 互联网发布时间: 2013-11-30

代码如下:

<?php
if(isset($_COOKIE["username"]))
{
header("location:main.php");
}
else
{
echo "cookie没有找到";
}
?>

代码如下:

<?php
setcookie("username"); //删除cookie
?>