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WP_Query::is_404(): bool

Determines whether the query is a 404 (returns no results).

Return

bool Whether the query is a 404 error.

Source

public function is_404() {
	return (bool) $this->is_404;
}

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Changelog

Version Description
3.1.0 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_query/is_404