is_404()
Determines whether the query has resulted in a 404 (returns no results).
Description
For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.
Return
(bool) Whether the query is a 404 error.
Source
File: wp-includes/query.php
function is_404() {
global $wp_query;
if ( ! isset( $wp_query ) ) {
_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
return false;
}
return $wp_query->is_404();
}
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Changelog
| Version | Description |
|---|---|
| 1.5.0 | Introduced. |
User Contributed Notes
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Example
if ( is_404() ) { // add search form so that users can search other posts }