Bug #75880 [NEW]: array key duplicate with integer and string

From: mars0222 at gmail dot com Operating system: ubuntu:16.04 PHP version: 7.0.27 Package: PHP Language Specification Bug Type: Bug Bug description:array key duplicate with integer and string Description: ------------ When use (array) to convert the object to array, the key will using string even the it is integer, then the string key will never been get. Test script: --------------- $obj = '{"300": {"id": "foo"}}'; $obj = json_decode($obj); $obj = (array)$obj; var_dump($obj); // array (size=1) '300' => string 'foo' (length=3) var_dump($obj["300"]); // null var_dump($obj[300]); // null Expected result: ---------------- It should be convert the object key to integer if it can convert to integer. Actual result: -------------- When convert the object the key will always be string even the key can convert to integer. -- Edit bug report at https://bugs.php.net/bug.php?id=75880&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75880&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75880&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75880&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75880&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75880&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75880&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75880&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75880&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75880&r=support Expected behavior: https://bugs.php.net/fix.php?id=75880&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75880&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75880&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75880&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75880&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75880&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75880&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75880&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75880&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75880&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75880&r=mysqlcfg