Bug #73837 [Ver->Asn]: "new DateTime()" sometimes returns 1 second ago value on PHP 7.1.0
| From: | derick@php.net | Date: | Sun, 01 Jan 2017 12:29:45 +0000 |
| Subject: | Bug #73837 [Ver->Asn]: "new DateTime()" sometimes returns 1 second ago value on PHP 7.1.0 | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-206275@lists.php.net to get a copy of this message | ||
Edit report at https://bugs.php.net/bug.php?id=73837&edit=1
ID: 73837
Updated by: derick@php.net
Reported by: for-bugs at hnw dot jp
Summary: "new DateTime()" sometimes returns 1 second ago
value on PHP 7.1.0
-Status: Verified
+Status: Assigned
Type: Bug
Package: Date/time related
Operating System: macOS
PHP Version: 7.1.0
Assigned To: derick
Block user comment: N
Private report: N
New Comment:
That's curious... will investigate.
Previous Comments:
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[2016-12-29 19:43:04] requinix@php.net
Same on Windows.
Looks like the problem is in timelib.
------------------------------------------------------------------------
[2016-12-29 19:25:12] for-bugs at hnw dot jp
Description:
------------
From PHP 7.1, DateTime constructor fills microseconds. However, setting seconds and setting
microseconds are in different function, so sometimes DateTime instance has 1 second ago value from
actual time.
Test script:
---------------
<?php
$prev_dt = new DateTime();
while (true) {
$dt = new DateTime();
if ($prev_dt > $dt) {
var_dump($prev_dt->format("Y-m-d H:i:s.u"));
var_dump($dt->format("Y-m-d H:i:s.u"));
break;
}
$prev_dt = $dt;
}
Expected result:
----------------
infinite loop
Actual result:
--------------
soon ends and outputs like this:
string(26) "2016-12-29 18:35:54.999998"
string(26) "2016-12-29 18:35:54.000000"
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=73837&edit=1