Bug #71241 [NEW]: array_replace_recursive sometimes mutates its parameters

From: as Operating system: PHP version: 7.0.1 Package: Variables related Bug Type: Bug Bug description:array_replace_recursive sometimes mutates its parameters Description: ------------ array_replace_recursive can sometimes mutate its params if references are nested within. This appears to be new behavior in PHP7. It also affects PHPunit. Test script and diff: https://3v4l.org/0sdbm Patch attached. Test script: --------------- <?php $one = [1]; $two = [42]; $arr1 = ['k' => &$one]; $arr2 = ['k' => &$two]; var_dump(current($one), current($two)); array_replace_recursive($arr1, $arr2); var_dump(current($one), current($two)); Expected result: ---------------- int(1) int(42) int(1) int(42) Actual result: -------------- int(1) int(42) int(42) int(42) -- Edit bug report at https://bugs.php.net/bug.php?id=71241&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71241&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71241&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71241&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71241&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71241&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71241&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71241&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71241&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71241&r=support Expected behavior: https://bugs.php.net/fix.php?id=71241&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71241&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71241&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71241&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71241&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71241&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71241&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71241&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71241&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71241&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71241&r=mysqlcfg