Bug #77139 [Com]: intval gives wrong results

Edit report at https://bugs.php.net/bug.php?id=77139&edit=1 ID: 77139 Comment by: spam2 at rhsoft dot net Reported by: markus at senoner dot com Summary: intval gives wrong results Status: Open Type: Bug Package: *Math Functions Operating System: Linux (any) PHP Version: Irrelevant Block user comment: N Private report: N New Comment: http://php.net/manual/de/language.types.float.php Previous Comments: ------------------------------------------------------------------------ [2018-11-11 18:06:02] markus at senoner dot com Description: ------------ Please try: echo intval(8.2*1000); echo intval(8.2*100); echo intval(8.2*10); echo intval(8.2*1); result: 8200 819 <--- this is wrong! 82 8 happens in PHP 7.2 as well as in PHP 5.X If 819 is the result of an internal representation of 8.2 as 8.199999..., than why does the first operation in this example not give 8199 ?!? Expected result: ---------------- 8.2*100 should give 820, not 819 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77139&edit=1