Bug #70500 [Wfx->Csd]: array_keys() returns NULL

Edit report at https://bugs.php.net/bug.php?id=70500&edit=1 ID: 70500 User updated by: miloslav dot hula at gmail dot com Reported by: miloslav dot hula at gmail dot com Summary: array_keys() returns NULL -Status: Wont fix +Status: Closed Type: Bug Package: Documentation problem PHP Version: 7.0.0RC2 Block user comment: N Private report: N New Comment: From doc: > In this case it will likely return NULL but this is just a convention, and cannot be relied > upon. Previous Comments: ------------------------------------------------------------------------ [2015-09-15 11:51:43] requinix@php.net Standard practice for internal functions is to return NULL when passed arguments of the wrong type. Documenting this on every single function page would be crazy so it's mentioned on the internal functions page instead. http://php.net/functions.internal ------------------------------------------------------------------------ [2015-09-15 10:07:04] miloslav dot hula at gmail dot com Generally returns NULL on anything else than array. ------------------------------------------------------------------------ [2015-09-15 10:03:38] miloslav dot hula at gmail dot com Description: ------------ The array_keys() returns NULL when called with NULL instead of array. Test script: --------------- <?php var_dump(array_keys(NULL)); Expected result: ---------------- array(0) { } Actual result: -------------- NULL ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=70500&edit=1