wp_maybe_enqueue_oembed_host_js

WordPress Version: 5.9

/**
 * Enqueue the wp-embed script if the provided oEmbed HTML contains a post embed.
 *
 * In order to only enqueue the wp-embed script on pages that actually contain post embeds, this function checks if the
 * provided HTML contains post embed markup and if so enqueues the script so that it will get printed in the footer.
 *
 * @since 5.9.0
 *
 * @param string $html Embed markup.
 * @return string Embed markup (without modifications).
 */
function wp_maybe_enqueue_oembed_host_js($html)
{
    if (has_action('wp_head', 'wp_oembed_add_host_js') && preg_match('/<blockquote\s[^>]*?wp-embedded-content/', $html)) {
        wp_enqueue_script('wp-embed');
    }
    return $html;
}