Download cacert.pem and codebird.php from https://github.com/jublonet/codebird-php/tree/develop/src

tweet.function.php

<?php
function tweet($tweet)
{
    define("CONSUMER_KEY", "apps.twitter.com");
    define("CONSUMER_SECRET", "apps.twitter.com");
    define("ACCESS_TOKEN", "apps.twitter.com");
    define("ACCESS_SECRET", "apps.twitter.com");
    require_once("codebird.php");
    \Codebird\Codebird::setConsumerKey(CONSUMER_KEY, CONSUMER_SECRET);
    $cb = \Codebird\Codebird::getInstance();
    $cb->setToken(ACCESS_TOKEN, ACCESS_SECRET);
    $params = array(
        "status" => $tweet
    );
    $reply  = $cb->statuses_update($params);
    $data   = (array) $reply;
    if (isset($data["created_at"])) {
        return true;
    } else {
        return false;
    }
}
$tweet = tweet("Hi @Daltontastic");
if ($tweet) {
    echo "Tweeted";
} else {
    echo "Not Tweeted";
}
?>