pre_user_id

Filters the comment author's user id before it is set.

Description

apply_filters( 'pre_user_id', (int) $commentdata_user_id ); 

The first time this filter is evaluated, user_ID is checked (for back-compat), followed by the standard user_id value.

Parameters (1)

0. $commentdata_user_id (int)

The comment author's user ID.

Usage

To run the hook, copy the example below.

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

The following example is for adding a hook callback.

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

To remove a hook callback, use the example below.

// remove the filter 
remove_filter( 'pre_user_id', 'filter_pre_user_id', 10, 1 );