Replace the text \”Continue reading…\” below with whatever you would like to appear instead. After making the changes, save the the snippet in functions.php and the new text should appear whenever “read more” is used on posts and pages.
/* Replace read more text in WordPress posts and pages - More snippets at wpunplugged.com */
$custom_more = \"Continue reading...\";
add_filter( \'the_content_more_link\', \'my_more_link\', 10, 2 );
function my_more_link( $more_link, $more_link_text ) {
return str_replace( $more_link_text, $custom_more, $more_link );
}