Bug #65090 [NEW]: array_multisort() with SORT_NATURAL | SORT_FLAG_CASE results in incorrect order

From: rgrove at smugmug dot com Operating system: Linux 2.6.18-194.3.1.el5 PHP version: 5.4.16 Package: Arrays related Bug Type: Bug Bug description:array_multisort() with SORT_NATURAL | SORT_FLAG_CASE results in incorrect order Description: ------------ When the SORT_NATURAL | SORT_FLAG_CASE flags are passed to array_multisort(), it sorts strings beginning with the letter "a" above strings beginning with "_", even though "_" has a lower ordinal value. natsort() places "_" before "a" as I would expect, and array_multisort() places "_" before "a" when given only the SORT_NATURAL flag, without ORing it with SORT_FLAG_CASE. See the test script for details. Test script: --------------- <?php $keys = ["_", "a"]; $values = ["first", "second"]; // Results in incorrect order. array_multisort($keys, SORT_NATURAL | SORT_FLAG_CASE, $values, SORT_ASC); print_r($keys); print_r($values); // Results in correct order. natsort($keys); print_r($keys); // Results in correct order. array_multisort($keys, SORT_NATURAL, $values, SORT_ASC); print_r($keys); ?> Expected result: ---------------- I expect "_" to be sorted before "a", just as natsort() does. Actual result: -------------- "a" is sorted before "_". -- Edit bug report at https://bugs.php.net/bug.php?id=65090&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=65090&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=65090&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=65090&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=65090&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=65090&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=65090&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=65090&r=needscript Try newer version: https://bugs.php.net/fix.php?id=65090&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=65090&r=support Expected behavior: https://bugs.php.net/fix.php?id=65090&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=65090&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=65090&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=65090&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65090&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=65090&r=dst IIS Stability: https://bugs.php.net/fix.php?id=65090&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=65090&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=65090&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=65090&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=65090&r=mysqlcfg