coding problem - editing the footer text
I'm struggling with some code, and am hoping someone can help me.
I want to change the text on my footer. I know nothing about all this, but with help from my theme developer and hosting company, I've managed to create a child theme and copy the functions.php file into it.
At the moment, my footer says
evolve theme by Theme4Press • Powered by WordPress
but I'd like it to say
website designed by Nicola Booth Consultancy
The following is the code I now have in my functions file but it's not working - it still shows as the original text.
Can someone tell me where I've gone wrong - please?
[CODE]<?php //Opening PHP tag
$credits = '<p id="copyright"><span class="credits"><"Website designed by Nicola Booth Consultancy"</span></p>';
echo apply_filters( 'evolve_copy', (string) $credits );}
?> //Closing PHP tag [ICODE]