Bug #73207 [NEW]: Array ordering is same between 5.6.21 and 7.1.0 RC3

From: tuyen-truong at cybozu dot vn Operating system: PHP version: 7.1.0RC3 Package: Arrays related Bug Type: Bug Bug description:Array ordering is same between 5.6.21 and 7.1.0 RC3 Description: ------------ As description at http://php.net/manual/en/migration70.incompatible.php The "Array ordering when elements are automatically created during by reference assignments has changed" is written. And there is no other description about array ordering in http://php.net/manual/en/migration71.incompatible.php But, when I have confirmed the result, I saw that the output of php5.6.21 and php7.1.0RC3 are same. I think that it is bug of PHP7.1.0RC3, but please confirm it is a bug or not. Thank you. Test script: --------------- 1. php56.exe -r "$array = []; $array['a'] =& $array['b']; $array['b'] = 1; var_dump($array);" Output: array(2) { ["b"]=> &int(1) ["a"]=> &int(1) } 2. // php7.0.6 php70.exe -r "$array = []; $array['a'] =& $array['b']; $array['b'] = 1; var_dump($array);" Output: array(2) { ["a"]=> &int(1) ["b"]=> &int(1) } 3. php71.exe -r "$array = []; $array['a'] =& $array['b']; $array['b'] = 1; var_dump($array);" Output: array(2) { ["b"]=> &int(1) ["a"]=> &int(1) } Expected result: ---------------- When executing this script 3. php71.exe -r "$array = []; $array['a'] =& $array['b']; $array['b'] = 1; var_dump($array);" The output will be same the output of php7.0.6 array(2) { ["a"]=> &int(1) ["b"]=> &int(1) } -- Edit bug report at https://bugs.php.net/bug.php?id=73207&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73207&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73207&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73207&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73207&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73207&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73207&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73207&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73207&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73207&r=support Expected behavior: https://bugs.php.net/fix.php?id=73207&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73207&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73207&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73207&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73207&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73207&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73207&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73207&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73207&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73207&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73207&r=mysqlcfg