Hi.
I'm trying my hand at PHP.... I'm usually a dot net kinda guy.

I want to do a simple IF statement.
If a dropdown list A's value = "1", then textbox B's value = "Something".

suggestions?

What about a SWITCH?

Would this work?
If the value of a dropdown is one thing, then assign a value to a textbox accordingly...?

Please, I am new to this - and whatever insight you can give me would be helpful....

<?php
	$dept = ['department_id'];
	$UID = ['unique_identifier']
	switch ($dept) {
		case 9:
			$UID = "foo"
			break;
		case 8:
			$UID = "blah"
			break;
		case 7:
			$UID = "blargh"
			break;
		case 10:
			$UID = "thing"
			break;
	endswitch;	
?>

looking something like this?

$dropdown = $_request['select_dropdown'];
if($dropdown == 1) $textbox = "something";

hmm... I'm not sure that will do what I want, but I'll give it a shot.
Thanks,

You can't change the value of a textbox from a select element using PHP!

Originally Posted by chrishirst

You can't change the value of a textbox from a select element using PHP!

Yes, but by submitting the selected value with a page refresh could change the value of text box, right?

Originally Posted by kannan

Yes, but by submitting the selected value with a page refresh could change the value of text box, right?

Yes you can - You can get the form post value from the $_POST superglobal array and write the value in another var or overwrite the previous post value. Just output the new value in the html portion.

PHP Code:

<?php
  
  if ($_POST['ddm_value'] == 1) $_POST['txt_value'] = 'something';
  
?>
  
<textarea name="txt_value"><?php echo htmlentities($_POST['txt_value']); ?></textarea>