pre_user_nickname filter-hook . WP 2.0.3

Filters a user's nickname before the user is created or updated.

Usage

add_filter( 'pre_user_nickname', 'filter_function_name_3287' );
function filter_function_name_3287( $nickname ){
	// filter...

	return $nickname;
}

$nickname(string)

The user's nickname.

Where the hook is called

$meta['nickname'] = apply_filters( 'pre_user_nickname', $nickname );

Where in WP core the hook is used WordPress

add_filter( $filter, 'sanitize_text_field' );

add_filter( $filter, 'wp_filter_kses' );

add_filter( $filter, '_wp_specialchars', 30 );