Maman_ on "[Theme: Customizr] Add link in footer credits"

I saw this snippet, the fact is that i don't know how to code it in php

add_filter('tc_credits_display', 'my_custom_credits');
function my_custom_credits(){
$credits = '';
$newline_credits = 'and made by <a href="http://www.maman.com/">Maman_ ';
return '
<div class="span4 credits">
    		    	<p> · © '.esc_attr( date( 'Y' ) ).' </a><a href="'.esc_url( home_url() ).'" title="'.esc_attr(get_bloginfo()).'" rel="bookmark">'.esc_attr(get_bloginfo()).'</a> · '.($credits ? $credits : 'Designed by <a href="http://www.themesandco.com/">Themes & Co</a>').' ·'.($newline_credits ? '· '.$newline_credits.' ·' : '').'</p>		</div>';
}

It would be good like that ?