Bug #5494

%s formatter fails with locales that have a , as a decimal separator

Details

Submitted	2005-09-22 13:54 UTC
From	torben-spam-pear at nehmer dot net
Assigned	pajoye
Status	Closed
Package	Date
PHP Version	4.3.10
OS	Linux
Roadmaps	(Not assigned)

Comments

[2005-09-22 13:54 UTC] torben-spam-pear at nehmer dot net

Description:
------------
Simply put, PHP has the strange behavoir of formatting floats to the current locale unconditionally, but reading them in English one. Check this:

$double = 4.4;
$string = (string) $double;

On a German system, where we have the comma as a decimal separator, $string is now "4,4" *not* "4.4".

This is ok, but the real crap starts when converting back:

$newdouble = (double) $string;

$newdouble is now 4, *not* 4.4, as the string-to-double conversion requires a decimal point, not comma.

This breaks your neck in the %s formatter, which uses %02f in sprintf, which is subject to the same limitation.

This becomes appearant when using the following format call:

$date->format('%Y-%m-%dT%H:%M:%s%O');

It yields:

1946-02-10T15:30:0,000000+00:00

Date then fails to reread that string.

Suggested solution: str_replace(',', '.', $value) or accepting both comma and dot as a separator. Enforcing the same decimal seaparator seams wiser to me though.