Custom Excerpt for Wordpress

functions.php

<?php
/**
 * Excerpt content
 */
function iv_excerpt($excerpt_length, $added)
{
    $text = apply_filters( 'the_excerpt', get_the_excerpt() );
    $text = preg_replace('/\[.+\]/', '', $text );
    $chars_text = strlen($text);
    $text = $text." ";
    $text = substr($text,0,$excerpt_length);
    $text = substr($text,0,strrpos($text,' '));
    $text = $text.$added;
    $text = apply_filters('the_content', $text);
    $text = str_replace(array('[…]','[...]', '<p>', '</p>'), '', $text );
  
    return $text;
}