php mysql 留言本应用实例第1/2页_PHP教程

复制代码 代码如下:

$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 );
}
}
?>