Editing Attitude Footer

Hello,

I love this theme but am just having a little trouble editing the footer info. I’ve created a child theme and used this text from an old forum to edit the footer:
<?php

// Remove old copyright text
add_action( ‘init’ , ‘mh_remove_copy’ );
function mh_remove_copy() {
remove_action( ‘attitude_footer’ , ‘attitude_footer_info ‘, 25 );
}

// Add my own copyright text
add_action( ‘attitude_footer’ , ‘mh_footer_info’ , 25 );
function mh_footer_info() {
$output = ‘<div class=”copyright”>’.’Copyright ? [the-year] [site-link] Powered by: SUPER MARTIANS FROM MARS! ‘.'</div><!– .copyright –>’;
echo do_shortcode( $output );
}

But all this does is delete the footer completely from my site. Does anyone have any advice for me? Site link is: https://66.147.244.142/~jiyansar/

Jiyan