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Comments: Fix PHP Notice "trying to get property of non-object" in `comments_open()` and `pings_open()`. 

The post for the comments or pings is retrieved by `get_post()`. If the post exists, `get_post()` returns an instance of `WP_Post`; else, it returns `null`.

In both `comments_open()` and `pings_open()`, the returned value from `get_post()` is used without checking if the object returned, if the post exists. When the post does not exist, the following notices occur:

{{{
PHP Notice:  Trying to get property 'comment_status' of non-object in .../src/wp-includes/comment-template.php on line 1244
}}}

and

{{{
PHP Notice:  Trying to get property 'pings_open' of non-object in ../src/wp-includes/comment-template.php on line 1274
}}}

This commit fixes these notices by checking if the post has a non-falsey value before using it as an object to set the `$open` state. As the return from `get_post()` will only be an object or `null`, the truthy check is appropriate and slightly more performant.

Tests added to validate the fix.

Follow-up to [1964], [40666].

Props dd32, audrasjb, costdev, hellofromTonya, sergeybiryukov.
Fixes #54159.
Built from https://develop.svn.wordpress.org/trunk@52223


git-svn-id: http://core.svn.wordpress.org/trunk@51815 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
hellofromTonya 2021-11-19 20:24:00 +00:00
parent 6ebd3a8fc9
commit 30c9e4338d
2 changed files with 3 additions and 3 deletions
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4
wp-includes/comment-template.php
View File

@ -1241,7 +1241,7 @@ function comments_open( $post_id = null ) {
$_post = get_post( $post_id );
$post_id = $_post ? $_post->ID : 0;
$open = ( 'open' === $_post->comment_status );
$open = ( $_post && ( 'open' === $_post->comment_status ) );
/**
* Filters whether the current post is open for comments.
@ -1271,7 +1271,7 @@ function pings_open( $post_id = null ) {
$_post = get_post( $post_id );
$post_id = $_post ? $_post->ID : 0;
$open = ( 'open' === $_post->ping_status );
$open = ( $_post && ( 'open' === $_post->ping_status ) );
/**
* Filters whether the current post is open for pings.

2
wp-includes/version.php
View File

@ -16,7 +16,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.9-alpha-52222';
$wp_version = '5.9-alpha-52223';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.