[PHP] Re: sql query

[M. Sokolewicz]

! is a logical NOT operator. It simply turns true => false, and false => 
true.

So, what you have is:
$a = true;
if($a) {
        echo 'true';
} else {
        echo 'false';
}
if(!$a) {
        echo 'false!';
} else {
        echo 'true!';
}
In these 2 cases, it will echo
true and true!
More info can be found here:
http://www.php.net/manual/en/language.operators.logical.php
William Stokes wrote:
Hello
Can someone explain this to me. I don't know how to read this.
if (!$variable = mysql_query("select id,sessid from users where ...
What is this "if(!"
I mean the ! sign.
Thanks
-Will
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