Bug #47418 [Com]: number_format misbehaving with some values

Edit report at https://bugs.php.net/bug.php?id=47418&edit=1 ID: 47418 Comment by: miguelzubiaga at ipronet dot es Reported by: cu19 at gmx dot de Summary: number_format misbehaving with some values Status: Feedback Type: Bug Package: *Math Functions Operating System: Win7 PHP Version: 5.3.1 Block user comment: N Private report: N New Comment: Not a number_format() problem, a simple echo also fails. <?php echo 1.7 ?> expected: 1.7 result: 1.6: using Apache/2.2.11 (Win32) DAV/2 PHP/5.2.9-2 Restarting apache fixes the problem temporarily Previous Comments: ------------------------------------------------------------------------ [2011-01-24 21:03:47] pajoye@php.net VC6 builds I suppose? ------------------------------------------------------------------------ [2011-01-24 20:47:53] pjs67123 at yahoo dot com Having the same problem on PHP 5.2.13 and Apache 2.2.14 on Windows 2003 Server. <?php echo 1.7; ?> produces => 1.6: This happens after running Apache for about a week and then consistently happens EVERY time. Restarting Apache fixes the problem until about a week later. I consider this to be a serious problem that renders PHP useless for anything beyond casual applications. ------------------------------------------------------------------------ [2010-11-30 23:23:13] carrieraglan at gmail dot com Apache/2.2.11 PHP/5.2.10 $sql = "SELECT FIELD_1 FROM DB2_TABLE WHERE ID = ?"; $cur = odbc_prepare($db_handle, $sql); odbc_execute($cur, array(20382)); $field_1 = odbc_result($cur, "FIELD_1"); $field_1 = trim($field_1); print "<br>".$field_1; print "<br>".number_format($field_1, 2, '.', ''); print "<br>".number_format($field_1, 2, '.', ','); Expected Result: 1.90000000000000E+001 19.00 19.00 Actual Result: 1.90000000000000E+001 18.:0 18.:0 ------------------------------------------------------------------------ [2010-07-17 05:53:42] adrianv at taly dot net Code to reproduce this, where lib.php contains the my_number_format function as described by cu19 at gmx dot de. Numbers are internally correct, but display incorrectly. <?php include_once("lib.php"); echo "== Demo 1 == <BR>"; $deb = 10.50; $crd = 1; $tot = 0; for ($t=1;$t<=300;$t++) { $tot += $deb - $crd; echo "$t $tot"; echo " >>>> "; echo strval($tot); echo " >>>> "; echo sprintf('%F',$tot); echo " >>>> "; echo number_format($tot,2); echo " >>>> "; echo my_number_format($tot,2); echo " >>>> "; echo "<BR>"; } ?> ------------------------------------------------------------------------ [2010-03-08 03:37:01] tdietsche at comcast dot net did you ever get my email? ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=47418 -- Edit this bug report at https://bugs.php.net/bug.php?id=47418&edit=1