Edit report at https://bugs.php.net/bug.php?id=63303&edit=1
ID: 63303 User updated by: mikeyap2005 at gmail dot com Reported by: mikeyap2005 at gmail dot com Summary: adding 2 decimals number, returned 13 decimal point ? Status: Not a bug Type: Bug Package: Math related Operating System: windows 7 PHP Version: 5.3.17 Block user comment: N Private report: N New Comment: thanks for your quick response. Previous Comments: ------------------------------------------------------------------------ [2012-10-18 13:17:24] ni...@php.net 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. ------------------------------------------------------------------------ [2012-10-18 09:37:41] mikeyap2005 at gmail dot com Description: ------------ echo (47659.45-47658.35); // will return 1.0999999999985, which 13 decimals point // should return "1.10" right ? why "1.0999999999985" ? Expected result: ---------------- 1.10 Actual result: -------------- 1.0999999999985 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=63303&edit=1