Gets and Posts

[denzlite]

So more newb insanity.

Let's say I have a page that is already getting DB info from a previous page. Within this page - let's call it 'mental.php?sub_id=28' - I need to use a select form to update the name field (from within the same DB as I get the id).

This is what I have near the top with echos so I can see what's going on:

	if ( (isset($_GET['sub_id']) && is_numeric($_GET['sub_id'])) ) {
		$sub_id = ($_GET['sub_id']);
		echo '<p>GET/sub_id is set to:';
		echo $sub_id;
	} elseif ( (isset($_POST['sub_id'])) && (is_numeric($_POST['sub_id'])) ) { // Form submission.
		$sub_id = ($_POST['sub_id']);
		echo '<p>POST/sub_id is set to:';
		echo $sub_id;
	} else {
		echo '<p class="error">No get set/No post set.</p>';
	}

So - this allows me to get the id from the previous page so I can show info for that record based on that sub_id. Then at the bottom I need to offer a dropdown that updates the DB for that particular record and return to the same page.

Do I need another isset further down the page? I'm not sure I understand the nature of a get/post within something that is already gotten. What would be the form action that would get me back to 'mental.php?sub_id?=28' with the changes reflected based on the submit from the dropdown? Ah, learning PHP, what fun to spend hours making a dropdown work.

Thanks for the help.

[djjjozsi]

you've rather use just one method from the form. post is better then get.

how you get back from the update form?

if you made the changes in update.php, in that case use header("Location: first_form.php"); command to get there..
you can add into that variables.

header("Location: first_form.php?subid=5&errormessage=updatesuccessfull");

but before header command do not write something into the display..