note 87800 added to function.shell-exec

Beware of the following inconsistency: shell_exec() and the backtick operator will not return a string if the command's output is empty -- they'll return NULL instead. This will make strict comparisons to '' return false. ---- Server IP: 80.241.173.254 Probable Submitter: 88.149.235.98 ---- Manual Page -- http://www.php.net/manual/en/function.shell-exec.php Edit -- https://master.php.net/note/edit/87800 Del: integrated -- https://master.php.net/note/delete/87800/integrated Del: useless -- https://master.php.net/note/delete/87800/useless Del: bad code -- https://master.php.net/note/delete/87800/bad+code Del: spam -- https://master.php.net/note/delete/87800/spam Del: non-english -- https://master.php.net/note/delete/87800/non-english Del: in docs -- https://master.php.net/note/delete/87800/in+docs Del: other reasons-- https://master.php.net/note/delete/87800 Reject -- https://master.php.net/note/reject/87800 Search -- https://master.php.net/manage/user-notes.php