WP Function Replaces the Read More with ellipses & Limits Excerpt character count

excerpt-char-limit.php

/**
 * Filter the except length to x characters.
 *
 * @param int $length Excerpt length.
 * @return int (Maybe) modified excerpt length.
 */
function wpdocs_custom_excerpt_length( $length ) {
    return x;
}
add_filter( 'excerpt_length', 'wpdocs_custom_excerpt_length', 999 );

excerpt-read-more.php

// Replaces the excerpt "Read More" text by a link
function new_excerpt_more($more) {
       global $post;
    return '<a class="moretag" href="'. get_permalink($post->ID) . '">...</a>';
}
add_filter('excerpt_more', 'new_excerpt_more');