[PHP] Is this possible

[LMC]

Hi all,

ive just made a simple news system in php for a friend... Ive made a page where you can veiw or edit exsisting news articles. Basically you go on to a page where it lists all news articles, then yo can click on the one you want and it will load the article in to forms on a new page where you can edit it and then save it again. The link is basically "manage_news.php?id=IDHERE" in the browser when you edit a article. But if you wanted you could just enter "manage_news.php" and it would still show the pages but the forms would be blank. Is there anyway to block this "manage_news.php" and only allow "manage_news.php?ID=IDHERE".
if it dont make sence, sorry. i tried my best.
Ge me? Thanks.

 

[Pure]

<?php
if(!$_GET['id'])
{
 die;
}

 

[jMerliN]

Technically you'd test for existence with isset or array_key_exists. That will raise a warning (or error, depending on configuration).

 

[LMC]

<?php
if(!$_GET['id'])
{
 die;
}

what I want it to do is not allow you on the page if there is no id.

EDIT: Thanks for the help James, ive got it working now. Thank you merlin for also helping out.