Make an option selected based on $_GET. Is this even possible?

Question

Hi,

I have a quick question.

Is it possible to do something like this?

The options are generated dynamically based on foreach loop. I want the loop to stop where the $_GET['t'] equals the $k and make it selected.

<option value="http://domain.com/&lt;?php print $k; ?>/" <?php if ($k == $_GET['t']) print 'selected'; ?>><?php print $v; ?></option>

Basically is there a way to make the option selected/highlighted based on the provided $_GET[t'] value on the address bar.. I tried it and i get undefined index: t error.

am i missing something?

Thanks a lot.

Answer 1

You almost got it - the xhtml is actually selected="selected"

<option value="http://domain.com/&lt;?php print $k; ?>/" <?php if ($k == $_GET['t']) print 'selected="selected"'; ?>><?php print $v; ?></option>

Answer 2

You get the undefined error because "t" is not in your $_GET request.

make sure you are calling the right url (i.e.: example.com/script.php?t=test)

Do make sure you are checking for the value (as others suggested) with isset($_GET['t'])

Answer 3

Above what adam noted, are you testing by actually passing a "t=something" on the end? This code should get rid of the error by testing to see if t was set first:

<option value="http://domain.com/&lt;?php print $k; ?>/" <?php if (isset($_GET['t']) && $k == $_GET['t']) print 'selected="selected"'; ?>><?php print $v; ?></option>

Answer 4

You shouldn't use GET's to change form values on a page. You should use POST for that :)

This way, if anyone crawls your page, they won't have 10 times the same page with just the select box changed :)