postToTwitter.php

<?php

# Licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
# http://creativecommons.org/publicdomain/zero/1.0/

function postToTwitter($data=array()) {

    require_once 'OAuth.php';

    $consumerKey = 'XXXX';
    $consumerSecret = 'XXXX';
    $accessToken = 'XXXX';
    $accessTokenSecret = 'XXXX';

    $consumer = new Twitter_OAuthConsumer($consumerKey, $consumerSecret);
    $token = new Twitter_OAuthConsumer($accessToken, $accessTokenSecret);
    $signatureMethod = new Twitter_OAuthSignatureMethod_HMAC_SHA1();

    $method = 'POST';
    $resource = 'https://api.twitter.com/1.1/statuses/update.json';

    if (isset($data['media[]']))  {
        $resource = 'https://api.twitter.com/1.1/statuses/update_with_media.json';
    }

    $request = Twitter_OAuthRequest::from_consumer_and_token(
        $consumer,
        $token,
        $method,
        $resource,
        $data
    );
    $request -> sign_request(
        $signatureMethod,
        $consumer,
        $token
    );

    $options = array(
        CURLOPT_HEADER => FALSE,
        CURLOPT_RETURNTRANSFER => TRUE,
        CURLOPT_POST => TRUE,
        CURLOPT_POSTFIELDS => $data,
        CURLOPT_URL => $request -> to_url(),
        CURLOPT_TIMEOUT => 20,
        CURLOPT_SSL_VERIFYPEER => 0,
        CURLOPT_HTTPHEADER => array('Expect:'),
        CURLOPT_USERAGENT => 'adactio.com',
    );

    $curl = curl_init();
    curl_setopt_array($curl, $options);
    $result = curl_exec($curl);
    curl_close($curl);

    return json_decode($result, true);

}

?>