#48423 [NEW]: ksort applied with array_walk not working consistently

From: brad at njoe dot com Operating system: Windows & *nix PHP version: 5.2.9 PHP Bug Type: Arrays related Bug description: ksort applied with array_walk not working consistently Description: ------------ While using array_walk() to apply ksort() to a multidimensional array, I experienced some unusual results. I expected that since each "sub-array" contained identical keys and values that they would all be sorted in the same manner. See the example code/expected output below for more information. I've tried this on Windows (ver. 5.2.9-2) as well as a Linux box (ver. 5.2.6) and both yielded the same results. If I manually "walk" ksort() through the array, i.e.: ksort($test[0]); ksort($test[1]); ksort($test[2]); ksort($test[3]); ksort($test[4]); ksort($test[5]); then the results are as expected. I've tried with varying number of array elements in the parent array as well as changing the keys around; no matter what I did, the array in $test[1] was always sorted incorrectly (and unpredictably at that). Reproduce code: --------------- <?php $test = array( array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah' => 'value4', 'foo' => 'value5', 'bar' => 'value6'), array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah' => 'value4', 'foo' => 'value5', 'bar' => 'value6'), array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah' => 'value4', 'foo' => 'value5', 'bar' => 'value6'), array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah' => 'value4', 'foo' => 'value5', 'bar' => 'value6'), array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah' => 'value4', 'foo' => 'value5', 'bar' => 'value6'), array('key' => 'value1', 'this' => 'value2', 'word' => 'value3', 'blah' => 'value4', 'foo' => 'value5', 'bar' => 'value6') ); array_walk($test, 'ksort'); print_r($test); ?> Expected result: ---------------- Array ( [0] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [1] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [2] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [3] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [4] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [5] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) ) Actual result: -------------- Array ( [0] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [1] => Array ( [foo] => value5 [bar] => value6 [blah] => value4 [word] => value3 [this] => value2 [key] => value1 ) [2] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [3] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [4] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) [5] => Array ( [bar] => value6 [blah] => value4 [foo] => value5 [key] => value1 [this] => value2 [word] => value3 ) ) -- Edit bug report at http://bugs.php.net/?id=48423&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=48423&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=48423&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=48423&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=48423&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48423&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=48423&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=48423&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=48423&r=needscript Try newer version: http://bugs.php.net/fix.php?id=48423&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=48423&r=support Expected behavior: http://bugs.php.net/fix.php?id=48423&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=48423&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=48423&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=48423&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48423&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=48423&r=dst IIS Stability: http://bugs.php.net/fix.php?id=48423&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=48423&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=48423&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=48423&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=48423&r=mysqlcfg