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php mysql 留言本应用实例

　　本文标签：php,mysql,留言本

复制代码 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);
?>

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 align="center"><span class="style1">留言板 - 管理登陆</span></p>
<p align="center"><span class="style2"><a href="viewposts.php" href="viewposts.php">浏览留言</a> | <a href="newpost.php" href="newpost.php">发表留言</a></span></p>
<form name="form1" method="POST" action="<?php echo $loginFormAction; ?>">
<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>