Custom excerpt length and read more link

<?php
/**
 * Custom Excerpt Length and Read More
 *
 * WordPress defaults to a 55-word excerpt with a "[...]" suffix that isn't
 * linked to anything. This snippet shortens the excerpt to 30 words (better
 * for card layouts and archives) and replaces the suffix with a styled
 * "Continue reading" link that points to the full post.
 *
 * Usage: Add to functions.php. Adjust the word count as needed.
 *
 * @category wordpress
 * @language php

 *
 * @author Adame Dahmani https://adame.io
 * @support Support my family project: https://adame.io/fundraiser
 */
add_filter( 'excerpt_length', function () {
    return 30;
}, 999 );

add_filter( 'excerpt_more', function () {
    return sprintf(
        '&hellip; <a href="%s" class="read-more">Continue reading</a>',
        esc_url( get_permalink() )
    );
} );