note 63627 added to function.intval

Re: Ben Laurienti, Disturbing issue with intval() This may make things a little more clear for you: <?php $amount = 19.99 * 100; printf("%.13f", $amount); // Outputs : 1998.99999999999981998 ?> Remember that casting floats to ints rounds towards zero, so these are all functionally the same producing 1998: echo (int)$amount; echo intVal($amount); echo (int) 1998.99999999999981998; Computers cannot store many floating point values to exact precision. For this reason it is generally recommended to never work with currencies in floating point types, and use integers (work in cents), or use some other method. Using floats will have all kinds of rounding and comparison issues. 19.99 will not be the only number to surprise you! ---- Server IP: 66.163.161.117 Probable Submitter: 69.195.8.22 ---- X-Spam-Status: No, hits=3.1 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER autolearn=no version=2.64 ---- Manual Page -- http://www.php.net/manual/en/function.intval.php Edit -- http://master.php.net/note/edit/63627 Del: integrated -- http://master.php.net/note/delete/63627/integrated Del: useless -- http://master.php.net/note/delete/63627/useless Del: bad code -- http://master.php.net/note/delete/63627/bad+code Del: spam -- http://master.php.net/note/delete/63627/spam Del: non-english -- http://master.php.net/note/delete/63627/non-english Del: in docs -- http://master.php.net/note/delete/63627/in+docs Del: other reasons-- http://master.php.net/note/delete/63627 Reject -- http://master.php.net/note/reject/63627 Search -- http://master.php.net/manage/user-notes.php