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clean function - getting error


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I am creating a website but am having trouble with the following:


I have an include file(db.inc) which contains the following:


function clean($input, $maxlength)


$input = substr($input, 0, $maxlength);

$input = EscapeShellCmd($input);

return ($input);


The file I am having the problem with is my view.php file. I get the following error:


Notice: Undefined variable: file in C:\wamp\www\fermpix\view.php on line 4


Line 4 contains the following:

$file = clean($file, 4);


My view.php does have the line:

include 'db.inc';



Does anybody have any idea what the issue might be?





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