twitter_cache()

nebula()->twitter_cache($username, $listname, $number_tweets, $include_retweets)

        public function twitter_cache($options=array()){
            $defaults = apply_filters('nebula_twitter_cache_defaults', array(
                'user' => 'Great_Blakes',
                'list' => null,
                'number' => 5,
                'retweets' => 1,
            ));

            $options = ( is_array($options) )? $options : array(); //Ensure the provided options is an array (and assign an empty array if it does not exist). Remember, this function may be called via WP hook.

            $data = array_merge($defaults, $options);
            $post = $this->super->post; //Get the $_POST data

            if ( !empty($post['data']) ){
                if ( !wp_verify_nonce($post['nonce'], 'nebula_ajax_nonce') ){ die('Permission Denied.'); }
                $data['user'] = ( isset($post['data']['user']) )? sanitize_text_field($post['data']['user']) : $defaults['user'];
                $data['list'] = ( isset($post['data']['list']) )? sanitize_text_field($post['data']['list']) : $defaults['list']; //Only used for list feeds
                $data['number'] = ( isset($post['data']['number']) )? sanitize_text_field($post['data']['number']) : $defaults['number'];
                $data['retweets'] = ( isset($post['data']['retweets']) )? sanitize_text_field($post['data']['retweets']) : $defaults['retweets']; //1: Yes, 0: No
            }

            $twitter_timing_id = $this->timer('Twitter Cache (' . $data['user'] . ')', 'start', 'Twitter Cache');

            error_reporting(0); //Prevent PHP errors from being cached.

            if ( !empty($data['list']) ){
                $feed = 'https://api.twitter.com/1.1/lists/statuses.json?slug=' . $data['list'] . '&owner_screen_name=' . $data['user'] . '&count=' . $data['number'] . '&include_rts=' . $data['retweets'] . '&tweet_mode=extended';
            } else {
                $feed = 'https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name=' . $data['user'] . '&count=' . $data['number'] . '&include_rts=' . $data['retweets'] . '&tweet_mode=extended';
            }

            $bearer = $this->get_option('twitter_bearer_token', '');
            if ( empty($bearer) ){
                trigger_error('A Twitter bearer token is required to get tweets', E_USER_WARNING);

                if ( !empty($post['data']) ){
                    echo false;
                    wp_die();
                } else {
                    return false;
                }
            }

            $tweets = nebula()->transient('nebula_twitter_' . $data['user'], function($data){
                $args = array('headers' => array('Authorization' => 'Bearer ' . $data['bearer']));

                $response = $this->remote_get($data['feed'], $args);
                if ( is_wp_error($response) ){
                    return false;
                }

                $tweets = json_decode($response['body']);

                //If there are no tweets -or- if an error is return (for example if an account does not exist)
                if ( empty($tweets) || !empty($tweets->errors) || !empty($tweets->error) ){
                    trigger_error('No tweets were retrieved. Verify all options are correct, the requested Twitter account exists, and that an active bearer token is being used.', E_USER_NOTICE);

                    if ( !empty($data['post']['data']) ){
                        echo false;
                        wp_die(); //Exit AJAX
                    } else {
                        return false;
                    }
                }

                //Add convenient data to the tweet object
                foreach ( $tweets as $tweet ){
                    $tweet->tweet_url = 'http://twitter.com/' . $tweet->user->screen_name . '/status/' . $tweet->id; //Add Tweet URL

                    //Convert times
                    $tweet->time_ago = human_time_diff(strtotime($tweet->created_at)); //Relative time
                    $tweet->time_formatted = date('l, F j, Y \a\t g:ia', strtotime($tweet->created_at)); //Human readable time
                    $tweet->time_ago_raw = date('U')-strtotime($tweet->created_at);

                    //Convert usernames, hashtags, and URLs into clickable links and add other markup
                    $tweet->markup = preg_replace(array(
                        "/(http\S+)/i", //URLs (must be first)
                        "/@([a-z0-9_]+)/i", //Usernames
                        "/#([a-z0-9_]+)/i", //Hashtags
                        "/(\d+\/(\d+)?)$/i", //Series numbers
                    ), array(
                        "<a class='tweet-embedded-link' href='$1' target='_blank' rel='noopener'>$1</a>",
                        "<a class='tweet-embedded-username' href='https://twitter.com/$1' target='_blank' rel='noopener'>@$1</a>",
                        "<a class='tweet-embedded-hashtag' href='https://twitter.com/hashtag/$1' target='_blank' rel='noopener'>#$1</a>",
                        "<small class='tweet-embedded-series-number'>$1</small>",
                    ), trim($tweet->full_text));
                }

                return $tweets;
            }, array('bearer' => $bearer, 'feed' => $feed, 'post' => $post), MINUTE_IN_SECONDS*5);

            $this->timer($twitter_timing_id, 'end');

            if ( !empty($post['data']) ){
                echo wp_json_encode($tweets);
                wp_die();
            } else {
                return $tweets;
            }
        }