Bug #62431 [Opn->Nab]: array_fill_keys must always return an array

Edit report at https://bugs.php.net/bug.php?id=62431&edit=1 ID: 62431 Updated by: nikic@php.net Reported by: gmblar+php at gmail dot com Summary: array_fill_keys must always return an array -Status: Open +Status: Not a bug Type: Bug Package: Arrays related Operating System: Linux PHP Version: 5.4.4 Block user comment: N Private report: N New Comment: All PHP functions return NULL when called with incorrect parameters. This is nothing special about array_fill_keys(). As this is the same for all functions it is not specially mentioned on every single function docs page. Previous Comments: ------------------------------------------------------------------------ [2012-06-27 16:06:06] gmblar+php at gmail dot com Description: ------------ array_fill_keys must always return an array as described in http://de3.php.net/manual/en/function.array-fill-keys.php. When call array_fill_keys with invalid arguments the function returns an invalid null! Test script: --------------- <?php var_dump(array_fill_keys(array('a', 'b', 'c'))); var_dump(array_fill_keys(true, 1)); var_dump(array_fill_keys('', 2)); var_dump(array_fill_keys(NULL, 3)); var_dump(array_fill_keys()); Expected result: ---------------- Warning: array_fill_keys() expects parameter 1 to be array, boolean given in - on line 4 array(0) { } Warning: array_fill_keys() expects parameter 1 to be array, string given in - on line 5 array(0) { } Warning: array_fill_keys() expects parameter 1 to be array, null given in - on line 6 array(0) { } Warning: array_fill_keys() expects exactly 2 parameters, 0 given in - on line 7 array(0) { } Actual result: -------------- Warning: array_fill_keys() expects exactly 2 parameters, 1 given in - on line 3 NULL Warning: array_fill_keys() expects parameter 1 to be array, boolean given in - on line 4 NULL Warning: array_fill_keys() expects parameter 1 to be array, string given in - on line 5 NULL Warning: array_fill_keys() expects parameter 1 to be array, null given in - on line 6 NULL Warning: array_fill_keys() expects exactly 2 parameters, 0 given in - on line 7 NULL ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=62431&edit=1