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if statement

Posted by Phil Latio on 11/06/06 04:40

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.
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.

Cheers

Phil

 

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