PHP Variable Troubles - $_GET

[Cobain]

Hi,

I am building my new website and I want to confine the menu to one file, but make it so that the user can see what page he/she is on. For this I came up with the following code:

<?php $page = $_GET['page']; ?>
<?php $page1 = 'page1'; $page2 = 'page2'; $page3 = 'page3'; $page4 = 'page4';?>

Where $pagenumber = 'inputvalue' in $_GET from the URL.
The menu is then below, as:

<?php if ($page == $page1) {echo "<div id=\"menuon\"><a href=\"/index.php?page=$page1\">Homepage</a></div>";} else {echo "<div id=\"menuoff\"><a href=\"/index.php?page=$page1\">Homepage</a></div>";} ?>
<?php if ($page == $page2) {echo "<div id=\"menuon\"><a href=\"/index.php?page=$page2\">Some Page</a></div>";} else {echo "<div id=\"menuoff\"><a href=\"/index.php?page=$page2\">Some Page</a></div>";} ?>

This works absolutely fine until I go to the top-level domain where there is no "$_GET['page']" input for the script to pick up on. I need it to recognise a non-input as the homepage, so that I don't have to redirect it to " /index.php?page=page1 ".
I have tried a few wacky and wonderful ways of doing this but none have been successful. Does anybody have any solutions or suggestions?

Many thanks,

[abhishekmiet]

I hope the following bunch of code will help you...

<?php
if(!isset($_GET['page'])){
 $page='page1';
}
else{
$page=$_GET['page'];
}
?>

[Cobain]

Hi abhishekmiet,

Thanks for that, works a treat! I think that PHP is great, but it is sooo annoying when you forget things!

Thanks again!