note 49246 added to function.rand

Don't forget, it's faster to use bitwise operations when you need a random number that's less than some power of two. For example, <?php rand()&1; // instead of rand(0,1); // for generating 0 or 1, rand()&3; // instead of rand(0,3); // for generating 0, 1, 2, or 3, rand()&7; // instead of rand(0,7) // for generating 0, 1, 2, 3, 4, 5, 6, or 7, ?> and so on. All you're doing there is generating a default random number (so PHP doesn't have to parse any arguments) and chopping off the piece that's useful to you (using a bitwise operation which is faster than even basic math). ---- Manual Page -- http://www.php.net/manual/en/function.rand.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+49246 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+49246&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+49246&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+49246&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+49246&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+49246&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+49246&report=yes Search -- http://master.php.net/manage/user-notes.php