From:             zoxx at konto dot pl
Operating system: FreeBSD
PHP version:      5.2.3
PHP Bug Type:     Strings related
Bug description:  Bug #41811    round() for large numbers ending with zeroes

Description:
------------
Bug related with Bugs #41811, #41152.

It's not really round() problem but string conversion made by echo or
concatenation with string. 

It is serious bug with strong consequences:
- php4 was free with that 'feature' so old correctly working scripts could
fail with php5 
- data that is inserted to mysql with exponent notation to mysql integer
fields is cutted to digits (so if you insert 1.41E+7 '1' integer is
inserted instead)
- data could be not displayed correctly, not correctly inserted to files
or passed to external systems (and so on...)
- it is unrelated with 'precision' php.ini configuration item, so
unexpected by programmer

Reproduce code:
---------------
<form action="testval.php" method=POST>
<input type=text name=val>
</form>
<?php
echo $val*100.0;
?>

Expected result:
----------------
input: 410000
output: 41000000

Actual result:
--------------
input: 410000
output: 4.1E+7

-- 
Edit bug report at http://bugs.php.net/?id=42432&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=42432&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=42432&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=42432&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=42432&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=42432&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=42432&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=42432&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=42432&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=42432&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=42432&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=42432&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=42432&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=42432&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=42432&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=42432&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=42432&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=42432&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=42432&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=42432&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=42432&r=mysqlcfg

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