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Ticket #50913: 50913-2.patch

File 50913-2.patch, 1.9 KB (added by jrf, 5 years ago)

Fix one fatal "ArgumentCountError: array_merge() does not accept unknown named parameters" error. This patch fixes 5 errors in the unit test run on PHP 8.0.

  • src/wp-includes/widgets.php 

    From 8669496f96642b2ae75b8abceb0a74e81f993fef Mon Sep 17 00:00:00 2001
From: jrfnl <jrfnl@users.noreply.github.com>
Date: Wed, 12 Aug 2020 02:37:01 +0200
Subject: [PATCH] PHP 8.0: fix "ArgumentCountError: array_merge() does not
 accept unknown named parameters" [1]

As per the documentation of `call_user_func_array()`, the $param_arr` should be a (numerically) indexed array, not a string-keyed array.

As we can use the spread operator in PHP 5.6+, there isn't really any need to use `call_user_func_array()` anyhow, we can call the `array_merge()` function directly.

The caveat to this is that the spread operator only works on numerically indexed arrays, so we need to wrap the `$sidebars_widgets` variable in a call to `array_values()` when using the spread operator.

Using `array_values()` in the existing `call_user_func_array()` call would also have solved this, but the solution now proposed, has the added benefit of getting rid of the overhead of `call_user_func_array()`.

Refs:
* https://www.php.net/manual/en/function.call-user-func-array
* https://www.php.net/manual/en/function.array-merge
* https://www.php.net/manual/en/function.array-values.php
---
 src/wp-includes/widgets.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/wp-includes/widgets.php b/src/wp-includes/widgets.php
index 6f2701e5ea..0d176687fb 100644
    a b function retrieve_widgets( $theme_changed = false ) { 
    12621262        $sidebars_widgets = wp_map_sidebars_widgets( $sidebars_widgets );
    12631263
    12641264        // Find hidden/lost multi-widget instances.
    1265         $shown_widgets = call_user_func_array( 'array_merge', $sidebars_widgets );
     1265        $shown_widgets = array_merge( ...array_values( $sidebars_widgets ) );
    12661266        $lost_widgets  = array_diff( $registered_widgets_ids, $shown_widgets );
    12671267
    12681268        foreach ( $lost_widgets as $key => $widget_id ) {