WordPress - This snippet, added in functions or where-ever, allows you to select the length and the link title of the excerpt

customExcerpt.php

<?php
// CUSTOMIZE EXCERPT LENGTH
function get_the_excerpt_limit($charlength = 200, $post = null, $readMoreStr = '[...]')
{
    $newExcerpt = '';
    if(isset($post)) {
        $excerpt = strlen($post->post_excerpt) > 0 ? $post->post_excerpt : wp_strip_all_tags($post->post_content);
    }
    else {
        $excerpt = get_the_excerpt();
    }
    $permalink = isset($post) ? get_the_permalink($post->ID) : get_the_permalink();

    $charlength++;

    if (mb_strlen($excerpt) > $charlength) {
        $newExcerpt = mb_substr($excerpt, 0, $charlength - strlen($readMoreStr));
        $exwords = explode(' ', $newExcerpt);
        $excut = -(mb_strlen($exwords[count($exwords) - 1]));
        if ($excut < 0) {
            $newExcerpt = mb_substr($newExcerpt, 0, $excut);
        }
        $newExcerpt = trim($newExcerpt, ",. \t\n\r\0\x0B") . '... <a href="'.$permalink.'" class="excerpt-read-more">'.$readMoreStr.'</a>';
    } else {
        $newExcerpt .= trim($excerpt, ",. \t\n\r\0\x0B") . '... <a href="'.$permalink.'" class="excerpt-read-more">'.$readMoreStr.'</a>';
    }
    return $newExcerpt;
}