Bug #77854 [NEW]: DateTime object comparison wrong
From: Stephan dot Hartmann at flyeralarm dot com
Operating system: Ubuntu
PHP version: 7.1.28
Package: Date/time related
Bug Type: Bug
Bug description:DateTime object comparison wrong
Description:
------------
Only in php7.1 relevant, php5.6 and php7.2 not
Comparing two DateTime objects fails even if they are identical.
Problem is probably float arithmetic because $date->diff($date1) != 0.
Test script:
---------------
<?php
$date = new DateTime();
$date1 = unserialize(serialize($date));
$date2 = new DateTime($date->format('Y-m-d H:i:s.u'));
print_r("start php version ".phpversion());
print_r("\n");
print_r("\n");
print_r("date==date1:");
print_r($date==$date1);
print_r("\n");
print_r("date==date2:");
print_r($date==$date2);
print_r("\n");
print_r("date1==date2:");
print_r($date1==$date2);
print_r("\n");
print_r("finish");
Expected result:
----------------
start php version 7.2.15-0ubuntu0.18.04.2
date==date1:1
date==date2:1
date1==date2:1
finish
Process finished with exit code 0
Actual result:
--------------
start php version 7.2.15-0ubuntu0.18.04.2
date==date1:
date==date2:
date1==date2:1
finish
Process finished with exit code 0
--
Edit bug report at https://bugs.php.net/bug.php?id=77854&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77854&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77854&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77854&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=77854&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=77854&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=77854&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=77854&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=77854&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=77854&r=support
Expected behavior: https://bugs.php.net/fix.php?id=77854&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=77854&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=77854&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=77854&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77854&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=77854&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=77854&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=77854&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=77854&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=77854&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=77854&r=mysqlcfg
Thread (10 messages)
- Stephan dot Hartmann at flyeralarm dot com