Bug #74077 [NEW]: Array_map with null argument inconsistency

From: Date: Fri, 10 Feb 2017 13:36:14 +0000
Subject: Bug #74077 [NEW]: Array_map with null argument inconsistency
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-207250@lists.php.net to get a copy of this message
From:             remyfox at hotmail dot com
Operating system: Windows 10
PHP version:      7.1.1
Package:          Unknown/Other Function
Bug Type:         Bug
Bug description:Array_map with null argument inconsistency

Description:
------------
In the array map documentation
(http://php.net/manual/en/function.array-map.php) under #4 there is an
example of using null as argument so as to make an array of arrays. This
works fine for as long one item is provided to the array_map function.
However, if there are is just one item provided, then the function will
fail to be consistent.

Test script:
---------------
$two_item_array = [["abc", "def"], ["ghi", "jkl"]];
$one_item_array = [["abc", "def"]];

print_r(array_map(null, ...$two_item_array));
print_r(array_map(null, ...$one_item_array));

Expected result:
----------------
Array
(
    [0] => Array
        (
            [0] => abc
            [1] => ghi
        )

    [1] => Array
        (
            [0] => def
            [1] => jkl
        )

)
Array
(
    [0] => Array
        (
            [0] => abc
        )

    [1] => Array
        (
            [0] => def
        )

)

Actual result:
--------------
Array
(
    [0] => Array
        (
            [0] => abc
            [1] => ghi
        )

    [1] => Array
        (
            [0] => def
            [1] => jkl
        )

)
Array
(
    [0] => abc
    [1] => def
)


-- 
Edit bug report at https://bugs.php.net/bug.php?id=74077&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=74077&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=74077&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=74077&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=74077&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=74077&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=74077&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=74077&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=74077&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=74077&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=74077&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=74077&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=74077&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=74077&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74077&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=74077&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=74077&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=74077&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=74077&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=74077&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=74077&r=mysqlcfg



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