我正在制作login.php,如果成功,它将返回home.php。我想用$ _SESSION,这里是我的代码:(!)注意:未定义的索引:用户名在C: wamp www HavenInWonderland home.php在线15
的login.php
<?php require_once('Connections/conn.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
{
$theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
$theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
}
?>
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
session_start();
}
$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
$_SESSION['PrevUrl'] = $_GET['accesscheck'];
}
if (isset($_POST['username'])) {
$loginUsername=$_POST['username'];
$password=$_POST['pass'];
$MM_fldUserAuthorization = "username";
$MM_redirectLoginSuccess = "home.php";
$MM_redirectLoginFailed = "login.php";
$MM_redirecttoReferrer = false;
mysql_select_db($database_conn, $conn);
$LoginRS__query=sprintf("SELECT username, pass, username FROM member WHERE username=%s AND pass=%s",
GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text"));
$LoginRS = mysql_query($LoginRS__query, $conn) or die(mysql_error());
$loginFoundUser = mysql_num_rows($LoginRS);
if ($loginFoundUser) {
$loginStrGroup = mysql_result($LoginRS,0,'username');
//declare two session variables and assign them
$_SESSION['MM_Username'] = $loginUsername;
$_SESSION['MM_UserGroup'] = $loginStrGroup;
if (isset($_SESSION['PrevUrl']) && false) {
$MM_redirectLoginSuccess = $_SESSION['PrevUrl'];
}
header("Location: " . $MM_redirectLoginSuccess);
}
else {
header("Location: ". $MM_redirectLoginFailed);
}
}
?>
<html>
<head>
<title>session</title>
</head>
<body>
<form method="POST" action="<?php echo $loginFormAction; ?>">
Please enter you name:
<input type="text" id="username" name="username" />
<input type="password" id="pass" name="pass" />
<input type="submit" value="Login" />
</form>
</body>
</html>
,这里是我的HOME.php
<?php
session_start();
?>
<html>
<head>
<title>welcome</title>
</head>
<body>
<h1>Thnx for signing in</h1>
<?php
echo "Welcome" . " " . $_POST['username'];
$_SESSION['chorva'] = $_POST['username'];
?>
</body>
</html>
我有用户名作为我的文本框的名字这就是我放在home.php上的原因,但为什么它总是说我有一个未定义的索引?
请别人帮我吗?
当你重定向'$ _POST'变量都将丢失,所以'username'始终将是一个不确定的指数。 – froddd
因为'$ _POST'数组是空的,或者至少没有''用户名'键,因为你没有在当前请求中发送任何东西。 – deceze
因为'$ _POST'是空的。当您使用行动'a.php'和'a.php'提交表单时,您将重定向到'b.php'发布的数据将不会被发送。把'$ _SESSION ['username'] = $ _POST ['username']'放在login.php中,然后在'session_start'之后使用它。 – Leri