php mysql 留言本应用实例

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>

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