note 98087 added to function.constant

Checking if a constant is empty is bork... 

You cannot

<?php
define('A', '');
define('B', 'B');

if (empty(B)) // syntax error
if (empty(constant('B'))) // fatal error

// so instead, thanks to LawnGnome on IRC, you can cast the constants to boolean (empty string is false)
if (((boolean) A) && ((boolean) B)) 
  // do stuff
?>
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Server IP: 69.147.83.197
Probable Submitter: 62.163.185.42
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Manual Page -- http://www.php.net/manual/en/function.constant.php
Edit        -- https://master.php.net/note/edit/98087
Del: integrated  -- https://master.php.net/note/delete/98087/integrated
Del: useless     -- https://master.php.net/note/delete/98087/useless
Del: bad code    -- https://master.php.net/note/delete/98087/bad+code
Del: spam        -- https://master.php.net/note/delete/98087/spam
Del: non-english -- https://master.php.net/note/delete/98087/non-english
Del: in docs     -- https://master.php.net/note/delete/98087/in+docs
Del: other reasons-- https://master.php.net/note/delete/98087
Reject      -- https://master.php.net/note/reject/98087
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