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Media: Check the posts_per_page value in wp_ajax_query_attachments() before using it as a divisor.

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This avoids a "Division by zero" PHP warning if a plugin changes the `posts_per_page` value to zero.

Follow-up to [51145].

Props 2linctools, kapilpaul, audrasjb.
Fixes #53773.

git-svn-id: https://develop.svn.wordpress.org/trunk@51485 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Sergey Biryukov
2021-07-25 09:55:33 +00:00
parent 301eb3c8f6
commit 9ea5645ec2
1 changed files with 3 additions and 1 deletions
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4
src/wp-admin/includes/ajax-actions.php
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@@ -3003,7 +3003,9 @@ function wp_ajax_query_attachments() {
$total_posts = $count_query->found_posts;
}
$max_pages = ceil( $total_posts / (int) $attachments_query->query['posts_per_page'] );
$posts_per_page = (int) $attachments_query->query['posts_per_page'];
$max_pages = $posts_per_page ? ceil( $total_posts / $posts_per_page ) : 0;
header( 'X-WP-Total: ' . (int) $total_posts );
header( 'X-WP-TotalPages: ' . (int) $max_pages );