blog_redirect_404

The WordPress Core blog redirect 404 hook.

Description

apply_filters( 'blog_redirect_404', (constant) $noblogredirect ); 

Parameters (1)

0. $noblogredirect (constant) => NOBLOGREDIRECT
The noblogredirect.

Usage

To run the hook, copy the example below.
  1. $noblogredirect = apply_filters( 'blog_redirect_404', $noblogredirect ); 
  2.  
  3. if ( !empty( $noblogredirect ) ) { 
  4.  
  5. // everything has led up to this point... 
  6.  
  7.  
The following example is for adding a hook callback.
  1. // define the blog_redirect_404 callback 
  2. function filter_blog_redirect_404( $noblogredirect ) { 
  3. // make filter magic happen here... 
  4. return $noblogredirect
  5. }; 
  6.  
  7. // add the filter 
  8. add_filter( 'blog_redirect_404', 'filter_blog_redirect_404', 10, 1 ); 
To remove a hook callback, use the example below.
  1. // remove the filter 
  2. remove_filter( 'blog_redirect_404', 'filter_blog_redirect_404', 10, 1 ); 

Defined (1)

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

/wp-includes/ms-functions.php  
  1. if ( is_main_site() && is_404() && defined( 'NOBLOGREDIRECT' ) && ( $destination = apply_filters( 'blog_redirect_404', NOBLOGREDIRECT ) ) ) {