Bug #70097 [NEW]: weird string auto casting to array

From: icestarsnowy at gmail dot com Operating system: windows 8 PHP version: 7.0Git-2015-07-18 (snap) Package: *General Issues Bug Type: Bug Bug description:weird string auto casting to array Description: ------------ I am using the charter position for doing something with string and for some reason when a string is empty it will automatic cast to array which i am not sure is it supposed to happen. Test script: --------------- $str = ""; $str[0] = "b"; var_dump($str); $str = "a"; $str[0] = "b"; var_dump($str); Expected result: ---------------- string(1) "b" string(1) "b" Actual result: -------------- array(1) { [0]=> string(1) "b" } string(1) "b" -- Edit bug report at https://bugs.php.net/bug.php?id=70097&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70097&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70097&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70097&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=70097&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=70097&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=70097&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=70097&r=needscript Try newer version: https://bugs.php.net/fix.php?id=70097&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=70097&r=support Expected behavior: https://bugs.php.net/fix.php?id=70097&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=70097&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=70097&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=70097&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70097&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=70097&r=dst IIS Stability: https://bugs.php.net/fix.php?id=70097&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=70097&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=70097&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=70097&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=70097&r=mysqlcfg