WordPress at a glance
function is not described

WP_Query::is_comments_popup() public WP 3.1.0

Deprecated in from version 4.5.0. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

Whether the current URL is within the comments popup window.

It's a method of the class: WP_Query{}

No Hooks.

Return

false. Always returns false.

Usage

$WP_Query = new WP_Query();
$WP_Query->is_comments_popup();

Changelog

Since 3.1.0 Introduced.
Deprecated 4.5.0

Code of WP_Query::is_comments_popup() WP 5.5.1

<?php
public function is_comments_popup() {
	_deprecated_function( __FUNCTION__, '4.5.0' );

	return false;
}