Bug #81011 [PATCH]: mb_convert_encoding removes references from arrays

Edit report at https://bugs.php.net/bug.php?id=81011&edit=1 ID: 81011 Patch added by: cmb@php.net Reported by: mvalihora at gmail dot com Summary: mb_convert_encoding removes references from arrays Status: Verified Type: Bug Package: mbstring related Operating System: All PHP Version: 7.4.18 Assigned To: cmb Block user comment: N Private report: N New Comment: The following pull request has been associated: Patch Name: Fix #81011: mb_convert_encoding removes references from arrays On GitHub: https://github.com/php/php-src/pull/6938 Patch: https://github.com/php/php-src/pull/6938.patch Previous Comments: ------------------------------------------------------------------------ [2021-05-04 13:04:20] mvalihora at gmail dot com Description: ------------ when some elements in array are changed by reference and this array is then converted using mb_convert_encoding, these elements are removed or empty. Warning is emmited "mb_convert_encoding(): Object is not supported in ...", but function returns result without mentioned elements. Best see in code example. Test script: --------------- // any sample array, structure does not matter $array = [ 'ads' => [ 123 => ['name' => 'this', 'id' => 444], 234 => ['name' => 'that', 'id' => 555], ], 'other' => ['one', 'two'] ]; // we modify array elements using reference foreach( $array['ads'] as &$ad ){ $ad['premium'] = (int)($ad['id'] == 555); } // print_r prints array contents OK print_r($array); // mb_convert_encoding emits Warning, but returns result where modified array elements are removed - in this case 'ads' element print_r(mb_convert_encoding($array, 'UTF-8', 'UTF-8')); Expected result: ---------------- array elements does not disappear, mb_convert_encoding does not emit warning Actual result: -------------- mb_convert_encoding returns result where modified array elements are removed. mb_convert_encoding emits warning ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=81011&edit=1