note 101726 added to function.gmp-fact

Here's a short, lazy version of ghsot's function (with support for "division" of factorials), and a function that calculates number of permutations: <?php function factorial($n, $b = 1) { $v = 1; do { $v *= $n; } while( --$n > $b ); return $v; } function permutations($n, $k = 2) { if( $n < $k ) return false; return factorial($n, $n - $k); } ---- Server IP: 69.147.83.197 Probable Submitter: 99.167.93.41 ---- Manual Page -- http://www.php.net/manual/en/function.gmp-fact.php Edit -- https://master.php.net/note/edit/101726 Del: integrated -- https://master.php.net/note/delete/101726/integrated Del: useless -- https://master.php.net/note/delete/101726/useless Del: bad code -- https://master.php.net/note/delete/101726/bad+code Del: spam -- https://master.php.net/note/delete/101726/spam Del: non-english -- https://master.php.net/note/delete/101726/non-english Del: in docs -- https://master.php.net/note/delete/101726/in+docs Del: other reasons-- https://master.php.net/note/delete/101726 Reject -- https://master.php.net/note/reject/101726 Search -- https://master.php.net/manage/user-notes.php