[SOLVED] check if choice has made

[tyra]

how to tell php that it check if the choice has made?

if(isset($_POST['button']))

if user presses button then he must have choice made othervise

echo 'you need to choose something';

[jackpf]

Yeah, so what's wrong with that?

[tyra]

if it doesn't contain any value with it, it still does other things.

[tyra]

Can you tell me how to write it properly ?

if(isset($_POST['button'])) && ($_POST['form'] = !null)){
echo 'choose something';
}
else{
echo 'great choice!';
}

 

[jackpf]

if(isset($_POST['button']) && $_POST['form'] != null){
echo 'choose something';
}
else{
echo 'great choice!';
}

However, that is dependant on whether "button" and "form" are real fields in the form.

[DarkSuperHero]

if(isset($_POST['button']) && ($_POST['form'] != null))
{
     echo 'choose something';
}
else{
     echo 'great choice!';
}

[tyra]

Thank you!