wp_unique_post_slug_is_bad_hierarchical_slug

The WordPress Core wp unique post slug is bad hierarchical hook.

Description

apply_filters( 'wp_unique_post_slug_is_bad_hierarchical_slug', (bool) $false, (unknown) $slug, (unknown) $post_type, (unknown) $post_parent ); 

Parameters (4)

0. $false (bool) => false
The false.
1. $slug (unknown)
The slug.
2. $post_type (unknown)
The post type.
3. $post_parent (unknown)
The post parent.

Usage

To run the hook, copy the example below.
  1. $false = apply_filters( 'wp_unique_post_slug_is_bad_hierarchical_slug', $false, $slug, $post_type, $post_parent ); 
  2.  
  3. if ( !empty( $false ) ) { 
  4.  
  5. // everything has led up to this point... 
  6.  
  7.  
The following example is for adding a hook callback.
  1. // define the wp_unique_post_slug_is_bad_hierarchical_slug callback 
  2. function filter_wp_unique_post_slug_is_bad_hierarchical_slug( $false, $slug, $post_type, $post_parent ) { 
  3. // make filter magic happen here... 
  4. return $false
  5. }; 
  6.  
  7. // add the filter 
  8. add_filter( 'wp_unique_post_slug_is_bad_hierarchical_slug', 'filter_wp_unique_post_slug_is_bad_hierarchical_slug', 10, 4 ); 
To remove a hook callback, use the example below.
  1. // remove the filter 
  2. remove_filter( 'wp_unique_post_slug_is_bad_hierarchical_slug', 'filter_wp_unique_post_slug_is_bad_hierarchical_slug', 10, 4 ); 

Defined (1)

The filter is defined in the following location(s).

/wp-includes/post.php  
  1. if ( $post_name_check || in_array( $slug, $feeds ) || 'embed' === $slug || preg_match( "@^($wp_rewrite->pagination_base)?\d+$@", $slug ) || apply_filters( 'wp_unique_post_slug_is_bad_hierarchical_slug', false, $slug, $post_type, $post_parent ) ) {