Bug #75653 [Dup->Csd]: array_values don't work on empty array

Edit report at https://bugs.php.net/bug.php?id=75653&edit=1 ID: 75653 Updated by: nikic@php.net Reported by: math dot piot at gmail dot com Summary: array_values don't work on empty array -Status: Duplicate +Status: Closed Type: Bug Package: Arrays related Operating System: Debian 9 PHP Version: 7.2.0 Block user comment: N Private report: N New Comment: Automatic comment on behalf of nikita.ppv@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=8c73fc8027a7293e81c0b2e8dc2674fe34f1eb59 Log: Fixed bug #75653 Previous Comments: ------------------------------------------------------------------------ [2017-12-08 13:55:49] spam2 at rhsoft dot net looks like a terrible BC break in 7.2 and i can remember recently that we wrote code to get the first remaining value after cleanup by $first = array_values($array)[0] which would no longer work with PHP 7.2 preserve keys here makes no sense 7.1.12: array(2) { [0]=> string(5) "data2" [1]=> string(5) "data3" } 7.2.1-dev: array(2) { [1]=> string(5) "data2" [2]=> string(5) "data3" } ------------------------------------------------------------------------ [2017-12-08 13:55:48] requinix@php.net Basically the same as bug #75433 ------------------------------------------------------------------------ [2017-12-08 13:44:53] math dot piot at gmail dot com Description: ------------ If I do a array_value on an empty array, it doesn't work. It works well if there is as least 1 value in the array. Test script: --------------- $array[] = 'data1'; // I want [0 => 'data1'] unset($array[0]); // I want [] $array = array_values($array); // I want [] but keys resetted $array[] = 'data2'; // I want [0 => 'data2'] $array[] = 'data3'; // I want [0 => 'data2', 1 => 'data3'] var_dump($array); Expected result: ---------------- array(2) { [0]=> string(5) "data2" [1]=> string(5) "data3" } Actual result: -------------- array(2) { [1]=> string(5) "data2" [2]=> string(5) "data3" } ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75653&edit=1