Doc #73551 [NEW]: new DateTime() with microsec is BC

From: aa dot vasilenko at gmail dot com Operating system: PHP version: 7.1.0RC6 Package: Documentation problem Bug Type: Documentation Problem Bug description:new DateTime() with microsec is BC Description: ------------ Fix for #48225 in 7.10RC4 broke tests on our side. Basically now it's not possible to assume that 2 \new DateTime() are the same. Of course this is bad behavior but I'm nearly sure that a lot of business logic is using it. Would be nice to list it as a breaking change in documentation or "What's New" to prepare developers better for upcoming 7.1 release Test script: --------------- <?php $a = new DateTime(); for ($i = 0; $i < 100; $i++) { //noop, just to let some microseconds pass } $b = new DateTime(); var_dump($a == $b); Expected result: ---------------- true //<7.1RC4 Actual result: -------------- false //>=7.1RC4 -- Edit bug report at https://bugs.php.net/bug.php?id=73551&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73551&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73551&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73551&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73551&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73551&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73551&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73551&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73551&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73551&r=support Expected behavior: https://bugs.php.net/fix.php?id=73551&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73551&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73551&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73551&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73551&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73551&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73551&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73551&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73551&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73551&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73551&r=mysqlcfg