php mysql 留言本应用实例第1/2页

实例说明制作一个php+mysql留言本

$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:

//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:

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:

// *** 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 );
}
}
?>

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