Carbon loses microsecond information

[t-tomek]

I've found an issue with microseconds (Carbon v1.22.1, PHP v7.0.22):

$date = DateTime::createFromFormat('Y-m-d\TH:i:s.uT', '2017-07-29T13:57:27.123456Z');
echo($date->format('Y-m-d H:i:s.u e')); // 2017-07-29 13:57:27.123456 Z

$date = Carbon::createFromFormat('Y-m-d\TH:i:s.uT', '2017-07-29T13:57:27.123456Z');
echo($date->format('Y-m-d H:i:s.u e')); // 2017-07-29 13:57:27.000000 Z

[Glavic]

On PHP 7.0.22 (Windows x64) and Carbon 1.22.1 I get the identical result for both cases.

public function testIssue1073()
{
	$date = \DateTime::createFromFormat('Y-m-d\TH:i:s.uT', '2017-07-29T13:57:27.123456Z');
	$d1 = $date->format('Y-m-d H:i:s.u e');
	
	$date = Carbon::createFromFormat('Y-m-d\TH:i:s.uT', '2017-07-29T13:57:27.123456Z');
	$d2 = $date->format('Y-m-d H:i:s.u e');
	
	$this->assertTrue($d1 === $d2);
}

[t-tomek]

Just found out why this is not working for me.

It's related with setlocale('pl-PL.utf8'); as PHP has problem with decimal point :| see Bug #67127

[t-tomek]

Sorry, I copied wrong command it should be setlocale(LC_ALL, 'pl_PL.UTF-8');

But be aware that you have to have this locale installed on your system, otherwise locale won't be changed.

[Glavic]

@t-tomek: I have tested your configuration, and indeed it doesn't. It doesn't work for any locale which has comma for decimal point, even for my sl_SI. If you set only LC_TIME in setlocale() it will work.
Based that this is php bug I don't see what we can do? Closed the issue for the time being. If any new info is added, I will gladly reopen. TY

[kylekatarnls]

The initial issue says DateTime works for the same input. We should check if we have nothing related to the dot in our code.

[kylekatarnls]

Confirmed, new static($dt->format('Y-m-d H:i:s.u'), $dt->getTimezone()) loose microseconds.

I will try to fix it.

[kylekatarnls]

This is a PHP problem:

$date = new \DateTime('2017-07-29T13:57:27.123456Z');
echo $date->format('Y-m-d H:i:s.u e')."\n";

setlocale(LC_ALL, 'fr');

$date = new \DateTime('2017-07-29T13:57:27.123456Z');
echo $date->format('Y-m-d H:i:s.u e');

Outputs:

2017-07-29 13:57:27.123456 Z
2017-07-29 13:57:27.000000 Z

This is a big problem, since createFromFormat call new DateTime to wrap a Carbon object around the DateTime.

@Glavic @briannesbitt If you have some idea. I don't know how we could work around this.

[kylekatarnls]

This is a fix to keep microseconds with coma decimal separator locales and work around https://bugs.php.net/bug.php?id=67127: #1128