Bug #79803 [Nab]: array_key_exists not returning bool

Edit report at https://bugs.php.net/bug.php?id=79803&edit=1 ID: 79803 User updated by: marekvikartovsky at gmail dot com Reported by: marekvikartovsky at gmail dot com Summary: array_key_exists not returning bool Status: Not a bug Type: Bug Package: Arrays related PHP Version: Irrelevant Assigned To: cmb Block user comment: N Private report: N New Comment: Thanks for your time, I didnt seen, that there is wrote "This behaviour should not be relied upon, and care should be taken to ensure that array is an array." Thank you, Have a nice day! Previous Comments: ------------------------------------------------------------------------ [2020-07-07 10:06:09] cmb@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php <https://www.php.net/manual/en/functions.internal.php> ------------------------------------------------------------------------ [2020-07-07 09:52:00] marekvikartovsky at gmail dot com Description: ------------ --- From manual page: https://php.net/function.array-key-exists --- Hello, if I am calling array_key_exists on NULL by mistake, the function should return bool FALSE, not NULL. I understand that it shows me a warning, but it also should return bool value as in documentation. I tested it on PHP version 7.1.33 and 7.4.7 Test script: --------------- var_dump(array_key_exists('test', NULL)); Expected result: ---------------- By documentation I am expecting to return a bool value, not NULL or you should return an exception, not warning. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79803&edit=1