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php mysql 留言本应用实例第1/2页

发布时间:2020-08-17 01:37:37 所属栏目:PHP教程 来源:互联网
导读:实例说明制作一个php+mysql留言本


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


复制代码 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;
}
?>


复制代码 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;
}
?>


复制代码 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"><!--
.style1 {font-size: 18px;
font-weight: bold;
}
.style2 {font-size: 14px}
--></style><style type="text/css" bogus="1">.style1 {font-size: 18px;
font-weight: bold;
}
.style2 {font-size: 14px}</style>
</head>

<body>
<p><span>留言板 - 管理登陆</span></p>
<p><span><a href="http://www.jb51.net/article/viewposts.php" href="http://www.jb51.net/article/viewposts.php">浏览留言</a> | <a href="http://www.jb51.net/article/newpost.php" href="http://www.jb51.net/article/newpost.php">发表留言</a></span></p>
<form method="POST" action="<?php echo $loginFormAction; ?>">
<table>
<tr>
<td>用户名:</td>
<td><input type="text"></td>
</tr>
<tr>
<td>密码:</td>
<td><input type="password"></td>
</tr>
<tr>
<td> </td>
<td><input type="submit" value="提交">
<input type="reset" value="重设"></td>
</tr>
</table>
</form>
<p> </p>
</body>
</html>

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