网站表单数据从昨天(即2015年5月26日)开始停止保存到谷歌电子表格

我已经创建了一个应用程序，我的网站表单数据将存储到一个谷歌电子表格。直到昨天，即2015年5月26日，它一直工作良好。但是从今天起，也就是2015年5月27日，它突然停止工作了。没有任何价值被添加到谷歌电子表格中。

我在电子表格应用程序

spreadsheet.php:

<?php
    class spreadsheet {
        private $token;
        private $spreadsheet;
        private $worksheet;
        private $spreadsheetid;
        private $worksheetid;
        public function __construct() {
        }
        public function authenticate($username, $password) {
            $url = "https://www.google.com/accounts/ClientLogin";
            $fields = array(
                "accountType" => "HOSTED_OR_GOOGLE",
                "Email" => $username,
                "Passwd" => $password,
                "service" => "wise",
                "source" => "pfbc"
            );
            $curl = curl_init();
            curl_setopt($curl, CURLOPT_URL, $url);
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($curl, CURLOPT_POST, true);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $fields);
            $response = curl_exec($curl);
            $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
            curl_close($curl);
            if($status == 200) {
                if(stripos($response, "auth=") !== false) {
                    preg_match("/auth=([a-z0-9_'-]+)/i", $response, $matches);
                    $this->token = $matches[1];
                }
            }
        }
        public function setSpreadsheet($title) {
            $this->spreadsheet = $title;
        }
        public function setWorksheet($title) {
            $this->worksheet = $title;
        }
        public function add($data) {
            if(!empty($this->token)) {
                $url = $this->getPostUrl();
                if(!empty($url)) {
                    $headers = array(
                        "Content-Type: application/atom+xml",
                        "Authorization: GoogleLogin auth=" . $this->token,
                        "GData-Version: 3.0"
                    );
                    $columnIDs = $this->getColumnIDs();
                    if($columnIDs) {
                        $fields = '<entry xmlns="http://www.w3.org/2005/Atom" xmlns:gsx="http://schemas.google.com/spreadsheets/2006/extended">';
                        foreach($data as $key => $value) {
                            $key = $this->formatColumnID($key);
                            if(in_array($key, $columnIDs))
                                $fields .= "<gsx:$key><![CDATA[$value]]></gsx:$key>";
                        }
                        $fields .= '</entry>';
                        $curl = curl_init();
                        curl_setopt($curl, CURLOPT_URL, $url);
                        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
                        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
                        curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
                        curl_setopt($curl, CURLOPT_POST, true);
                        curl_setopt($curl, CURLOPT_POSTFIELDS, $fields);
                        $response = curl_exec($curl);
                        $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
                        curl_close($curl);
                    }
                }
            }
        }
        private function getColumnIDs() {
            $url = "https://spreadsheets.google.com/feeds/cells/" . $this->spreadsheetid . "/" . $this->worksheetid . "/private/full?max-row=1";
            $headers = array(
                "Authorization: GoogleLogin auth=" . $this->token,
                "GData-Version: 3.0"
            );
            $curl = curl_init();
            curl_setopt($curl, CURLOPT_URL, $url);
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
            $response = curl_exec($curl);
            $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
            curl_close($curl);
            if($status == 200) {
                $columnIDs = array();
                $xml = simplexml_load_string($response);
                if($xml->entry) {
                    $columnSize = sizeof($xml->entry);
                    for($c = 0; $c < $columnSize; ++$c)
                        $columnIDs[] = $this->formatColumnID($xml->entry[$c]->content);
                }       
                return $columnIDs;      
            }
            return "";
        }
        private function getPostUrl() {
            $url = "https://spreadsheets.google.com/feeds/spreadsheets/private/full?title=" . urlencode($this->spreadsheet);
            $headers = array(
                "Authorization: GoogleLogin auth=" . $this->token,
                "GData-Version: 3.0"
            );
            $curl = curl_init();
            curl_setopt($curl, CURLOPT_URL, $url);
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
            $response = curl_exec($curl);
            $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
            if($status == 200) {
                $spreadsheetXml = simplexml_load_string($response);
                if($spreadsheetXml->entry) {
                    $this->spreadsheetid = basename(trim($spreadsheetXml->entry[0]->id));
                    $url = "https://spreadsheets.google.com/feeds/worksheets/" . $this->spreadsheetid . "/private/full";
                    if(!empty($this->worksheet))
                        $url .= "?title=" . $this->worksheet;
                    curl_setopt($curl, CURLOPT_URL, $url);
                    $response = curl_exec($curl);
                    $status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
                    if($status == 200) {
                        $worksheetXml = simplexml_load_string($response);
                        if($worksheetXml->entry)
                            $this->worksheetid = basename(trim($worksheetXml->entry[0]->id));
                    }
                }
            }
            curl_close($curl);
            if(!empty($this->spreadsheetid) && !empty($this->worksheetid))
                return "https://spreadsheets.google.com/feeds/list/" . $this->spreadsheetid . "/" . $this->worksheetid . "/private/full";
            return "";
        }
        private function formatColumnID($val) {
            return preg_replace("/[^a-zA-Z0-9.-]/", "", strtolower($val));
        }
    }
?>

，并按以下方式使用:

包括"spreadsheet.php";

$doc = new spreadsheet();
$doc->authenticate("example@example.com", "example");
$doc->setSpreadsheet("Tester");
$doc->setWorksheet("Sheet1");
$my_data = array("First Name" => "John", "Last Name" => "Doe");
$doc->add($my_data);

请帮帮我。