the_author filter-hook . WP 2.9.0

Filters the display name of the current post's author.

Usage

add_filter( 'the_author', 'filter_function_name_6423' );
function filter_function_name_6423( $display_name ){
	// filter...

	return $display_name;
}

$display_name(string)

The author's display name.

Where the hook is called

return apply_filters( 'the_author', is_object( $authordata ) ? $authordata->display_name : null );

Where the hook is used (in WP core)

add_filter( 'the_author', 'ent2ncr', 8 );