Bug #73290 [Opn->Nab]: intval, floor returns invalid result

Edit report at https://bugs.php.net/bug.php?id=73290&edit=1 ID: 73290 Updated by: cmb@php.net Reported by: drtzack at gmail dot com Summary: intval, floor returns invalid result -Status: Open +Status: Not a bug Type: Bug Package: *General Issues Operating System: Ubuntu 16.04 x64 PHP Version: 7.0.11 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: Floating point values have a limited precision. Hence a value might not have the same string representation after any processing. That also includes writing a floating point value in your script and directly printing it without any mathematical operations. If you would like to know more about "floats" and what IEEE 754 is, read this: http://www.floating-point-gui.de/ Thank you for your interest in PHP. You can see what actually happens, if you set the precision to a high value, see <https://3v4l.org/JvKdr>. Previous Comments: ------------------------------------------------------------------------ [2016-10-11 11:56:10] drtzack at gmail dot com Description: ------------ intval(floatval("139.20") * 100) returns invalid result Test script: --------------- intval(floatval("139.20") * 100) returns invalid result Expected result: ---------------- 13920 Actual result: -------------- 13919 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=73290&edit=1