PHP - Undefined Index Error Message

[frank73]

Hello,

Any assistance on this would be greatly appreciated. It seems I am receiving a 'Undefined Index:" error message with a few of the variables I am trying to define, at least I think I have defined them. Please see code below and messages I am receving - thanks in advance. What have I done wrong???

Frankie

------------------------------
<h1> Skyward Aviation</h1>
<h2>Mileage Credit Updated!</h2>
<p><a href='<?php echo "FrequentFlyerClub.php?" . SID
?>'>Frequent Flyer Club Home Page</a></p>

<?php
session_start();
$TravelDate = $_GET['year'] . "-" . $_GET['month']
. "-" . $_GET['date'];
$Mileage = $_GET['mileage'];

$DBConnect = mysqli_connect("localhost", "mmacdonald-dow", "web9631")
Or die("<p>Unable to connect to the database server.</p>" . "<p>Error code " . mysqli_connect_errno()
. ": " . mysqli_connect_error()) . "</p>";$DBName = "skyward_aviation";
@mysqli_select_db($DBConnect, $DBName)
Or die("<p>Unable to select the database.</p>"
. "<p>Error code " . mysqli_errno($DBConnect)
. ": " . mysqli_error($DBConnect)). "</p>";

$TableName = "mileage";
$SQLstring = "SELECT * FROM $TableName";
$QueryResult = @mysqli_query($DBConnect, $SQLstring);

$SQLstring = "INSERT INTO $TableName VALUES(NULL,
'{$_SESSION['flyerID']}', '$TravelDate', '$Mileage')";
$QueryResult = @mysqli_query($DBConnect, $SQLstring)
Or die("<p>Unable to execute the query.</p>"
. "<p>Error code " . mysqli_errno($DBConnect)
. ": " . mysqli_error($DBConnect)) . "</p>";mysqli_close($DBConnect);
?>

</body>
</html>


Messages -

Notice: Undefined index: year in c:\Inetpub\wwwroot\

Notice: Undefined index: month in c:\Inetpub\wwwroot

Notice: Undefined index: date in

Notice: Undefined index: mileage in c:\Inetpub\

[bubu]

Sometimes GET params aren't defined (arent present in URL). For example, in your code:

 $Mileage = $_GET['mileage']; 

$_GET['mileage'] isn't defined in your URL probably.

Try using @ before $_GET[''] variables. Like this:

 $Mileage = @$_GET['mileage']; 

PHP isn't complaining on the $Mileage variable, but on $_GET['mileage'].

I hope it helps.

[Nibinaear]

Undefined index just means your trying to get something from a position in the array that doesn't exist; they are case sensitive. To get it to work I'd try checking all of the name attributes in your form and check that they match the $_GET array positions you trying to get.