[WordPress] [Post-formats] Grab first embed

<?php

/*
* Este snippet busca o primeiro embed do post, seja através de shortcode (exemplo: [facebook url="https://www.facebook.com/usuario/posts/id-do-post"]
* ou usando o auto embed postando apenas a url (exemplo: https://www.facebook.com/usuario/posts/id-do-post.
* Se for um shortcode, usamos "get_shortcode_regex" (http://codex.wordpress.org/Function_Reference/get_shortcode_regex) e "do_shortcode" (http://codex.wordpress.org/Function_Reference/do_shortcode).
* Se for um autoembed, usamos "wp_oembed_get" (http://codex.wordpress.org/Function_Reference/wp_oembed_get).
*/

// No functions.php

function temabase_get_embed_content() {
    global $post, $posts, $wp_embed;
    $pattern = get_shortcode_regex();
    ob_start();
    ob_end_clean();
    if ( preg_match_all('/' . $pattern . '/s', $post->post_content, $matches) ) {
        echo do_shortcode($matches [0] [0]);
    }
    elseif (  preg_match_all('|^\s*(https?://[^\s"]+)\s*$|im', $post->post_content, $matches)  )  {
             $embed_code =  wp_oembed_get($matches [1] [0]);
             echo $embed_code;
    } else {
        echo the_except();
    }
}

// No loop (content.php ou similar)

echo temabase_get_embed_content();