Wordpress excerpt by second paragraph

Question

How to limit the excerpt length by paragraph, not word/char count? For example, excerpt shows only first two paragraphs, no matter how long the paragraphs are.

Thanks in

Answer 1

Here is a function that keeps HTML tags in tact, adds a "Read More" link at the end of the excerpt and trims the excerpt after the first paragraph.

if ( ! function_exists( 'wpse0001_custom_wp_trim_excerpt' ) ) : 

function wpse0001_custom_wp_trim_excerpt($wpse0001_excerpt) {
global $post;
$raw_excerpt = $wpse0001_excerpt;
if ( '' == $wpse0001_excerpt ) {

$wpse0001_excerpt = get_the_content('');
$wpse0001_excerpt = strip_shortcodes( $wpse0001_excerpt );
$wpse0001_excerpt = apply_filters('the_content', $wpse0001_excerpt);
// Here we choose how many paragraphs do we want to cutthe excerpt at, This part thanks to Clément Malet
$wpse0001_excerpt = "
$wpse0001_excerpt
";
    $wanted_number_of_paragraph = 2;
    $tmp = explode ('
', $wpse0001_excerpt);
    for ($i = 0; $i < $wanted_number_of_paragraph; ++$i) {
       if (isset($tmp[$i]) && $tmp[$i] != '') {
           $tmp_to_add[$i] = $tmp[$i];
       }
    }
$wpse0001_excerpt = implode('
', $tmp_to_add) . '
';

$wpse0001_excerpt = str_replace(']]>', ']]>', $wpse0001_excerpt);

$excerpt_end = ' ' . ' » ' . sprintf(__( 'Read more about: %s  »', 'pietergoosen' ), get_the_title()) . ''; 
$excerpt_more = apply_filters('excerpt_more', ' ' . $excerpt_end); 

//$pos = strrpos($wpse0001_excerpt, '

EDIT

Thanks to the help from @ClementMalet, I was able to tweak my function to make you choose the amount of paragraphs where you want to cut the excerpt. Please check his great answer here