Summery Summery

Adds a new permalink structure.

Syntax Syntax

WP_Rewrite::add_permastruct( string $name, string $struct, array $args = array() )

Description Description

A permalink structure (permastruct) is an abstract definition of a set of rewrite rules; it is an easy way of expressing a set of regular expressions that rewrite to a set of query strings. The new permastruct is added to the WP_Rewrite::$extra_permastructs array.

When the rewrite rules are built by WP_Rewrite::rewrite_rules(), all of these extra permastructs are passed to WP_Rewrite::generate_rewrite_rules() which transforms them into the regular expressions that many love to hate.

The $args parameter gives you control over how WP_Rewrite::generate_rewrite_rules() works on the new permastruct.

Parameters Parameters


(Required) Name for permalink structure.


(Required) Permalink structure (e.g. category/%category%)


(Optional) Arguments for building rewrite rules based on the permalink structure.

  • 'with_front'
    (bool) Whether the structure should be prepended with WP_Rewrite::$front. Default true.
  • 'ep_mask'
    (int) The endpoint mask defining which endpoints are added to the structure. Accepts EP_NONE, EP_PERMALINK, EP_ATTACHMENT, EP_DATE, EP_YEAR, EP_MONTH, EP_DAY, EP_ROOT, EP_COMMENTS, EP_SEARCH, EP_CATEGORIES, EP_TAGS, EP_AUTHORS, EP_PAGES, EP_ALL_ARCHIVES, and EP_ALL. Default EP_NONE.
  • 'paged'
    (bool) Whether archive pagination rules should be added for the structure. Default true.
  • 'feed'
    (bool) Whether feed rewrite rules should be added for the structure. Default true.
  • 'forcomments'
    (bool) Whether the feed rules should be a query for a comments feed. Default false.
  • 'walk_dirs'
    (bool) Whether the 'directories' making up the structure should be walked over and rewrite rules built for each in-turn. Default true.
  • 'endpoints'
    (bool) Whether endpoints should be applied to the generated rules. Default true.

Default value: array()

Source Source

File: wp-includes/class-wp-rewrite.php

	 * }
	public function add_permastruct( $name, $struct, $args = array() ) {
		// Back-compat for the old parameters: $with_front and $ep_mask.
		if ( ! is_array( $args ) ) {
			$args = array( 'with_front' => $args );
		if ( func_num_args() == 4 ) {
			$args['ep_mask'] = func_get_arg( 3 );

		$defaults = array(
			'with_front'  => true,
			'ep_mask'     => EP_NONE,
			'paged'       => true,
			'feed'        => true,
			'forcomments' => false,
			'walk_dirs'   => true,
			'endpoints'   => true,
		$args     = array_intersect_key( $args, $defaults );
		$args     = wp_parse_args( $args, $defaults );

		if ( $args['with_front'] ) {
			$struct = $this->front . $struct;
		} else {
			$struct = $this->root . $struct;
		$args['struct'] = $struct;


Changelog Changelog

Version Description
2.5.0 Introduced.


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