WordPress at a glance
filter is not described

comments_per_page filter-hook . WP 2.6.0

Filters the number of comments listed per page in the comments list table.


add_filter( 'comments_per_page', 'filter_function_name_6501', 10, 2 );
function filter_function_name_6501( $comments_per_page, $comment_status ){
	// filter...

	return $comments_per_page;
The number of comments to list per page.
The comment status name.
Default: 'All'

Where the hook is called

wp-admin/includes/class-wp-comments-list-table.php 175
return apply_filters( 'comments_per_page', $comments_per_page, $comment_status );
wp-admin/includes/class-wp-screen.php 1173
$per_page = apply_filters( 'comments_per_page', $per_page, $comment_status );

Where the hook is used (in WP core)

Does not used.