Bug #73925 [NEW]: BC break on array overriding declared string

From: zoeslam at gmail dot com Operating system: Linux PHP version: 7.1.0 Package: *General Issues Bug Type: Bug Bug description:BC break on array overriding declared string Description: ------------ PHP 7.1.0 changed a behaviour that was there from ages: array access overriding a previously declared string. https://3v4l.org/25AIu As far as I can read the docs, this change is a BC break and is NOT listed in the upgrading guide: https://secure.php.net/manual/en/migration71.other-changes.php Even though is similar to the "Notices and warnings on arithmetic with invalid strings" change. Test script: --------------- $string = ''; $string[0] = array(1); var_dump($string); Expected result: ---------------- array(1) { [0]=> array(1) { [0]=> int(1) } } Actual result: -------------- Notice: Array to string conversion in /in/25AIu on line 4 string(1) "A" -- Edit bug report at https://bugs.php.net/bug.php?id=73925&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73925&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73925&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73925&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73925&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73925&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73925&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73925&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73925&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73925&r=support Expected behavior: https://bugs.php.net/fix.php?id=73925&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73925&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73925&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73925&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73925&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73925&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73925&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73925&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73925&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73925&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73925&r=mysqlcfg