Twitter Developers/Changing application's settings (PHP)

gistfile1.php

<?php
// PHP 移植バージョン。こっちはもっとデバッグしてないバージョンです。
// @re4k 2012/10/11
class TwitterDevelopers
{
    private $cookie;
    private $boundary = "re4kboundary";
    private $user_agent = "Mozilla/5.0 (X11; Linux x86_64; rv:18.0) Gecko/18.0 Firefox/18.0 FirePHP/0.7.1";

    private function request($uri, $type = "GET", $data)
    {
        $content = "";
        $_c = [];
        foreach($this->cookie as $k => $v)
        {
            $_c[] = "$k=$v";
        }
        $context = [
            "http" => [
                "header" => implode("\r\n", [
                    "Cookie: " . implode("; ", $_c),
                    "User-Agent: " . $this->user_agent
                ])
            ]
        ];
        if($type == "POST_MULTIPART")
        {
            foreach($data as $key => $value)
            {
                $content .= "--$this->boundary\r\n";
                $content .= "Content-Disposition: form-data; name=$key\r\n";
                $content .= "\r\n";
                $content .= $value;
                $content .= "\r\n";
            }
            $content .= "--$this->boundary--\r\n";
            $context["http"]["method"] = "POST";
            $context["http"]["header"] = implode("\r\n", [
                $context["http"]["header"],
                "Content-Type: multipart/form-data; boundary=$this->boundary"
            ]);
            $context["http"]["content"] = $content;
        }
        else
        {
            $content = http_build_query($data, "", "&");
            $context["http"]["method"] = $type;
            if($type == "POST")
            {
                $context["http"]["header"] = implode("\r\n", [
                    $context["http"]["header"],
                    "Content-Type: application/x-www-form-urlencoded"
                ]);
            }
            $context["http"]["content"] = $content;
        }
        $response = file_get_contents($uri, false, stream_context_create($context));
        foreach($http_response_header as $r)
        {
            if(strpos($r, "Set-Cookie") === false)
            {
                continue;
            }

            list($k, $v) = explode("=", explode(";", explode(": ", $r)[1])[0]);
            $this->cookie[$k] = $v;
        }
        return $response;
    }

    private function prepare_login()
    {
        $res = $this->request("https://dev.twitter.com/user/login", "GET", []);
        $dom = new DOMDocument;
        @$dom->loadHTML($res);
        $xpath = new DOMXpath($dom);
        return [
            "form_build_id" => $xpath->query('//form[@id="user-login"]/input[@name="form_build_id"]')->item(0)->getAttributeNode("value")->value,
            "form_token" => $xpath->query('//form[@id="user-login"]/input[@name="form_token"]')->item(0)->getAttributeNode("value")->value,
            "form_id" => "user_login",
            "op" => "Log in"
        ];
    }

    private function login($name, $pass)
    {
        $data = $this->prepare_login();
        $data["name"] = $name;
        $data["pass"] = $pass;
        $res = $this->request("https://dev.twitter.com/user/login", "POST", $data);
    }

    private function prepare_update($id)
    {
        $res = $this->request("https://dev.twitter.com/apps/$id/settings", "GET", []);
        $dom = new DOMDocument;
        @$dom->loadHTML($res);
        $xpath = new DOMXpath($dom);
        return [
            "name" => $xpath->query('//*[@id="edit-name"]')->item(0)->getAttributeNode("value")->value,
        "description" => $xpath->query('//*[@id="edit-description"]')->item(0)->getAttributeNode("value")->value,
        "url" => $xpath->query('//*[@id="edit-url"]')->item(0)->getAttributeNode("value")->value,
        "files[image]" => "",
        "access_level" => $xpath->query('//input[@name="access_level" and @checked="checked"]')->item(0)->getAttributeNode("value")->value,
        "callback_url" => $xpath->query('//*[@id="edit-callback-url"]')->item(0)->getAttributeNode("value")->value,
        "organization" => $xpath->query('//*[@id="edit-organization"]')->item(0)->getAttributeNode("value")->value,
        "organization_url" => $xpath->query('//*[@id="edit-organization-url"]')->item(0)->getAttributeNode("value")->value,
        "op" => "Update this Twitter application's settings",
        "form_build_id" => $xpath->query('//form[@id="twitter-apps-form-settings"]/input[@name="form_build_id"]')->item(0)->getAttributeNode("value")->value,
        "form_token" => $xpath->query('//form[@id="twitter-apps-form-settings"]/input[@name="form_token"]')->item(0)->getAttributeNode("value")->value,
        "form_id" => "twitter_apps_form_settings"
        ];
    }

    public function update($id, $newname)
    {
        $data = $this->prepare_update($id);
        $data["name"] = $newname;
        $res = $this->request("https://dev.twitter.com/apps/$id/settings", "POST_MULTIPART", $data);
    }

    public function __construct($name, $pass)
    {
        $this->cookie = [];
        $this->login($name, $pass);
    }
}


$test = new TwitterDevelopers("screen_name", "password");
$test->update("app_id", "new_name");