Twitter API 1.1 特定ユーザーの user_timeline 取るだけ

tweets.php

<?php
$consumer_key = 'CONSUMER_KEY';
$consumer_secret = 'CONSUMER_SECRET';
$access_token = 'ACCESS_TOKEN';
$access_token_secret = 'ACCESS_TOKEN_SECRET';
$screen_name = 'SCREEN_NAME';

function load_tweets() {
    global $screen_name;
    $filename = "$screen_name.json";
    if (file_exists($filename) && time() - filemtime($filename) < 180) {
        return file_get_contents($filename);
    }

    $json = load_from_twitter();
    if ($json) {
        file_put_contents($filename, $json);
    }
    return $json;
}

function load_from_twitter() {
    require_once('twitteroauth/twitteroauth.php');
    global $consumer_key, $consumer_secret, $access_token, $access_token_secret, $screen_name;

    $connection = new TwitterOAuth($consumer_key, $consumer_secret, $access_token, $access_token_secret);
    $connection->host = "https://api.twitter.com/1.1/";
    $connection->decode_json = FALSE;

    return $connection->get('statuses/user_timeline', array('screen_name' => $screen_name));
}


$json = load_tweets();

if (isset($_GET['callback']) && $_GET['callback']) {
    header('Content-Type: application/javascript;charset=utf-8');
    echo $_GET['callback'] . "($json);";
} else {
    header('Content-Type: application/json;charset=utf-8');
    echo $json;
}