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Posted by Gordon Burditt on 11/06/06 05:07
>I am trying to remember how you write an if statement to check if any value
>has been entered. For example seeing if a username has been entered in form.
The variable $_GET['username'] or $_POST['username'] is where the
input from a form element appears in a modern version of PHP, not $username.
>I have seen the following:
>
>if ($username == '')
>{
> print ("You've pressed submit without entering your username");
>}
>
>However is there another method which uses an exclamation mark? I am sure I
>have seen something for where $username has no value but I can't think what
>it was.
You can use isset($_GET['username']) to determine if the value was given
at all.
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