note 71292 added to function.empty

It's good to also note that empty() can only be used on variables. Although this is clearly said in the documentation, it is easy to forget it and try to directly pass a return value to it from a function. e.g. <?php include 'class.whois.php'; $whois = new whois(); if(!empty($whois->getWhoami())) { echo "Could not find you."; } ?> This will produce a fatal error enigmatically saying, "Can't use method return value in write context..." ---- Server IP: 80.81.171.181 Probable Submitter: 84.250.46.16 ---- Manual Page -- http://www.php.net/manual/en/function.empty.php Edit -- https://master.php.net/note/edit/71292 Del: integrated -- https://master.php.net/note/delete/71292/integrated Del: useless -- https://master.php.net/note/delete/71292/useless Del: bad code -- https://master.php.net/note/delete/71292/bad+code Del: spam -- https://master.php.net/note/delete/71292/spam Del: non-english -- https://master.php.net/note/delete/71292/non-english Del: in docs -- https://master.php.net/note/delete/71292/in+docs Del: other reasons-- https://master.php.net/note/delete/71292 Reject -- https://master.php.net/note/reject/71292 Search -- https://master.php.net/manage/user-notes.php