Validating Drop Down Menu

[gold2040]

Hey

How would you validate a drop down menu using PHP. I know how to do it with Javascript

Cheers

Tom Evans

[djr33]

Assuming your dropdown is named "dropdown" and the form's method is "post"...


<?php
if ($_POST['dropdown'] == "value1") {
//do stuff like:
echo "it works!";
}
else {
//do something else like:
echo "error";
}
?>

But... what do you want, specifically?

Lots can be done to verify....

At least that's a basic example.

php.net has lot of info about various php things if you want to learn... look up "form handling"...

[gold2040]

Hey

Cheers for that. I mean like you just have to select 1 option out the dropdown menu

Tom Evans

[djr33]

Well... hate to point out the obvious... but it's worthless to have a dropdown menu "choice" if one is required... it's like an election with one candidate :p

Anyway... the above will do what you want.

Just for the "do stuff" make it continue in your script, and for else use, maybe, die("error. please try again.");

die() stops the page from loading at that point and outputs the string in the parentheses. You can use html in there too, like a JS-based back link.


that's the basics... not sure what funtionality you want if it's right or if it's wrong.

[Twey]

it's like an election with one candidateTotally pointless, but makes people think they have some choice in the matter?

We've had those for decades. :)

[djr33]

quite true.

also, I'm guessing this might be related to "do you accept these terms: yes/no", in which case it's totally valid.

still worth pointing out, though :)