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<?php

function ccd_disable_feed() {
  
  wp_die( __( 'No feed available, please visit <a href="'. get_bloginfo('url') .'">Home</a>!' ) );
  
}
add_action( 'do_feed', 'ccd_disable_feed', 1 );
add_action( 'do_feed_rdf', 'ccd_disable_feed', 1 );
add_action( 'do_feed_rss', 'ccd_disable_feed', 1 );
add_action( 'do_feed_rss2', 'ccd_disable_feed', 1 );
add_action( 'do_feed_atom', 'ccd_disable_feed', 1 );

?>