pre_handle_404 – Hook | Developer.WordPress.org

apply_filters( ‘pre_handle_404’, bool $preempt, WP_Query $wp_query )

Filters whether to short-circuit default header status handling.

Description

Returning a non-false value from the filter will short-circuit the handling and return early.

$preemptbool: Whether to short-circuit default header status handling. Default false.
$wp_queryWP_Query: WordPress Query object.

if ( false !== apply_filters( 'pre_handle_404', false, $wp_query ) ) {

Used by	Description
WP::handle_404()`wp-includes/class-wp.php`	Set the Headers for 404, if nothing is found for requested URL.

Version	Description
4.5.0	Introduced.

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