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apply_filters( 'query_vars', string[] $public_query_vars )

Since
1.5.0
Filters the query variables allowed before processing.

Description

Allows (publicly allowed) query vars to be added, removed, or changed prior to executing the query. Needed to allow custom rewrite rules using your own arguments to work, or any other custom query variables you want to be publicly available.

Compatibility

WordPress
since 1.5.0
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

Present in every tracked release (6.7.7 to 7.1.0).

Parameters

$public_query_varsstring[]
The array of allowed query variable names.

Where this hook fires · 1

  • wp-includes/class-wp.php:311WP::parse_request()

Source code

		 * to work, or any other custom query variables you want to be publicly available.		 *		 * @since 1.5.0		 *		 * @param string[] $public_query_vars The array of allowed query variable names.		 */		$this->public_query_vars = apply_filters( 'query_vars', $this->public_query_vars ); 		foreach ( get_post_types( array(), 'objects' ) as $post_type => $t ) {			if ( is_post_type_viewable( $t ) && $t->query_var ) {				$post_type_query_vars[ $t->query_var ] = $post_type;			}		}

Changelog

Introduced in 1.5.0. Unchanged from 6.7.7 through 7.1.0.

  1. 6.7.7
  2. 6.8.8
  3. 6.9.7
  4. 7.0.4
  5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

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