Twitter Feed Class

twitter.php

<?php

/*
    Retrieves twitter feed
*/

class SocialFeed {



    public function __construct() {

        define('TWITTER_ACCESS_TOKEN',          'XXXXXXXXXX');
        define('TWITTER_ACCESS_TOKEN_SECRET',   'XXXXXXXXXX');
        define('TWITTER_CONSUMER_KEY',          'XXXXXXXXXX');
        define('TWITTER_CONSUMER_SECRET',       'XXXXXXXXXX');

    }

    /*
        Get twitter feed
    */
    public function get_twitter(){

        $url = "https://api.twitter.com/1.1/statuses/user_timeline.json";
        $oauth = array( 'oauth_consumer_key' => TWITTER_CONSUMER_KEY,
                        'oauth_nonce' => time(),
                        'oauth_signature_method' => 'HMAC-SHA1',
                        'oauth_token' => TWITTER_ACCESS_TOKEN,
                        'oauth_timestamp' => time(),
                        'oauth_version' => '1.0');

        $base_info = $this->buildBaseString($url, 'GET', $oauth);
        $composite_key = rawurlencode(TWITTER_CONSUMER_SECRET) . '&' . rawurlencode(TWITTER_ACCESS_TOKEN_SECRET);
        $oauth_signature = base64_encode(hash_hmac('sha1', $base_info, $composite_key, true));
        $oauth['oauth_signature'] = $oauth_signature;

        // Make requests
        $header = array($this->buildAuthorizationHeader($oauth), 'Expect:');
        $options = array( CURLOPT_HTTPHEADER => $header,
                          //CURLOPT_POSTFIELDS => $postfields,
                          CURLOPT_HEADER => false,
                          CURLOPT_URL => $url,
                          CURLOPT_RETURNTRANSFER => true,
                          CURLOPT_SSL_VERIFYPEER => false);

        $feed = curl_init();
        curl_setopt_array($feed, $options);
        $json = curl_exec($feed);
        curl_close($feed);

        return json_decode($json);
    }

    private function buildBaseString($baseURI, $method, $params) {
        $r = array();
        ksort($params);
        foreach($params as $key=>$value){
            $r[] = "$key=" . rawurlencode($value);
        }
        return $method."&" . rawurlencode($baseURI) . '&' . rawurlencode(implode('&', $r));
    }

    private function buildAuthorizationHeader($oauth) {
        $r = 'Authorization: OAuth ';
        $values = array();
        foreach($oauth as $key=>$value)
            $values[] = "$key=\"" . rawurlencode($value) . "\"";
        $r .= implode(', ', $values);
        return $r;
    }

 
}

$feed = new SocialFeed();

print_r($feed->get_twitter());