get_main_network_id

Filters the main network ID.

Description

apply_filters( 'get_main_network_id', (int) $main_network_id ); 

Parameters (1)

0. $main_network_id (int)

The ID of the main network.

Usage

To run the hook, copy the example below.

$main_network_id = apply_filters( 'get_main_network_id', $main_network_id ); 
                         
if ( !empty( $main_network_id ) ) { 
                         
   // everything has led up to this point... 
                         
} 
  

The following example is for adding a hook callback.

// define the get_main_network_id callback 
function filter_get_main_network_id( $main_network_id ) { 
    // make filter magic happen here... 
    return $main_network_id; 
}; 
         
// add the filter 
add_filter( 'get_main_network_id', 'filter_get_main_network_id', 10, 1 ); 

To remove a hook callback, use the example below.

// remove the filter 
remove_filter( 'get_main_network_id', 'filter_get_main_network_id', 10, 1 );