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Doc Bug #80699 array_map no longer passes by reference
Submitted: 2021-02-02 19:24 UTC Modified: 2021-02-02 19:45 UTC
Votes:5
Avg. Score:4.4 ± 0.8
Reproduced:5 of 5 (100.0%)
Same Version:2 (40.0%)
Same OS:3 (60.0%)
From: donatj at gmail dot com Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 8.0.1 OS: All
Private report: No CVE-ID: None
 [2021-02-02 19:24 UTC] donatj at gmail dot com
Description:
------------
array_map no longer passes by-reference.

This has broken a lot of things for us.

This very well may be an intentional change, but I didn't see it noted, and if it is, it should be documented on the array_map page as a change?

Test script:
---------------
<?php

// https://3v4l.org/BdWq7

$data = array(
    array(1,2,3),
    array(4,5,6),
);

$data = array_map('reset', $data);

print_r($data);

Expected result:
----------------
Array
(
    [0] => 1
    [1] => 4
)


Actual result:
--------------
Warning: reset(): Argument #1 ($array) must be passed by reference, value given in /in/BdWq7 on line 8

Warning: reset(): Argument #1 ($array) must be passed by reference, value given in /in/BdWq7 on line 8
Array
(
    [0] => 1
    [1] => 4
)

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History

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 [2021-02-02 19:45 UTC] bwoebi@php.net
-Type: Bug +Type: Documentation Problem
 [2021-02-02 19:45 UTC] bwoebi@php.net
Yes, that's an intentional change; if you need a reference, there is array_walk for that.
 [2021-12-31 18:21 UTC] git@php.net
Automatic comment on behalf of cmb69
Revision: https://github.com/php/doc-en/commit/31cacb6f262f455c616094cfe6d09bc0d1df2748
Log: Fix #80699: array_map no longer passes by reference
 [2021-12-31 18:21 UTC] git@php.net
-Status: Open +Status: Closed
 
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