Bug #75533 [NEW]: array_reduce is slow when $carry is large array

From: manabu dot matsui at gmail dot com Operating system: macOS 10.13.1 PHP version: 7.1.11 Package: Performance problem Bug Type: Bug Bug description:array_reduce is slow when $carry is large array Description: ------------ array_reduce is slow when $carry is very large array and return it with some modification. My test script is test_array_reduce.php at https://gist.github.com/crhg/45c1f73ca59c9b0f6274412019b19fca I replaced array_reduce with simple pure php implementation, it runs fast. Script of this case is test_my_reduce.php. -- Edit bug report at https://bugs.php.net/bug.php?id=75533&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75533&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75533&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75533&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75533&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75533&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75533&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75533&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75533&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75533&r=support Expected behavior: https://bugs.php.net/fix.php?id=75533&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75533&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75533&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75533&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75533&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75533&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75533&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75533&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75533&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75533&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75533&r=mysqlcfg