how do I insert the function in my code

Hi,

I would like to insert the function that calls co-authors plus plugin in my theme.

So, here is my function :

if ( function_exists( 'coauthors_posts_links' ) ) {
    coauthors_posts_links();
} else {
    get_the_author();
}

But because the theme on which I’m working is very particular, I have to implement it in my function.php file within this code :

case 'author':
				$result[] = '<span class="art-postauthoricon">' . sprintf(__('<span class="%1$s">By</span> %2$s', THEME_NS),
								'author',
								sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s">%3$s</a></span>',
									get_author_posts_url( get_the_author_meta( 'ID' ) ),
									sprintf( esc_attr(__( 'View all posts by %s', THEME_NS )), get_the_author() ),
									get_the_author()
								)
						) . '</span>';
				break;

I tried every option (ie : shift “get_the_author()” by the whole function), but every time I get a white screen.

What’s the right way to display it correctly ?

Thanks for your help

http://wordpress.org/extend/plugins/co-authors-plus/