これは、メール チケット システムの開発に使用したサンプル コードです。ラベル、メッセージ、およびヘッダーを取得する方法を示します。
<?php
require_once __DIR__ . '/vendor/autoload.php';
define('APPLICATION_NAME', 'Gmail API PHP Quickstart');
define('CREDENTIALS_PATH', '~/.credentials/gmail-php-quickstart.json');
define('CLIENT_SECRET_PATH', __DIR__ . '/client_secret.json');
// If modifying these scopes, delete your previously saved credentials
// at ~/.credentials/gmail-php-quickstart.json
define('SCOPES', implode(' ', array(
Google_Service_Gmail::GMAIL_READONLY)
));
if (php_sapi_name() != 'cli') {
throw new Exception('This application must be run on the command line.');
}
/**
* Returns an authorized API client.
* @return Google_Client the authorized client object
*/
function getClient() {
$client = new Google_Client();
$client->setApplicationName(APPLICATION_NAME);
$client->setScopes(SCOPES);
$client->setAuthConfig(CLIENT_SECRET_PATH);
$client->setAccessType('offline');
// Load previously authorized credentials from a file.
$credentialsPath = expandHomeDirectory(CREDENTIALS_PATH);
if (file_exists($credentialsPath)) {
$accessToken = json_decode(file_get_contents($credentialsPath), true);
} else {
// Request authorization from the user.
$authUrl = $client->createAuthUrl();
printf("Open the following link in your browser:\n%s\n", $authUrl);
print 'Enter verification code: ';
$authCode = trim(fgets(STDIN));
// Exchange authorization code for an access token.
$accessToken = $client->fetchAccessTokenWithAuthCode($authCode);
// Store the credentials to disk.
if(!file_exists(dirname($credentialsPath))) {
mkdir(dirname($credentialsPath), 0700, true);
}
file_put_contents($credentialsPath, json_encode($accessToken));
printf("Credentials saved to %s\n", $credentialsPath);
}
$client->setAccessToken($accessToken);
// Refresh the token if it's expired.
if ($client->isAccessTokenExpired()) {
$client->fetchAccessTokenWithRefreshToken($client->getRefreshToken());
file_put_contents($credentialsPath, json_encode($client->getAccessToken()));
}
return $client;
}
/**
* Expands the home directory alias '~' to the full path.
* @param string $path the path to expand.
* @return string the expanded path.
*/
function expandHomeDirectory($path) {
$homeDirectory = getenv('HOME');
if (empty($homeDirectory)) {
$homeDirectory = getenv('HOMEDRIVE') . getenv('HOMEPATH');
}
return str_replace('~', realpath($homeDirectory), $path);
}
/**
* Get list of Messages in user's mailbox.
*
* @param Google_Service_Gmail $service Authorized Gmail API instance.
* @param string $userId User's email address. The special value 'me'
* can be used to indicate the authenticated user.
* @return array Array of Messages.
*/
function listMessages($service, $userId, $optArr = []) {
$pageToken = NULL;
$messages = array();
do {
try {
if ($pageToken) {
$optArr['pageToken'] = $pageToken;
}
$messagesResponse = $service->users_messages->listUsersMessages($userId, $optArr);
if ($messagesResponse->getMessages()) {
$messages = array_merge($messages, $messagesResponse->getMessages());
$pageToken = $messagesResponse->getNextPageToken();
}
} catch (Exception $e) {
print 'An error occurred: ' . $e->getMessage();
}
} while ($pageToken);
return $messages;
}
function getHeaderArr($dataArr) {
$outArr = [];
foreach ($dataArr as $key => $val) {
$outArr[$val->name] = $val->value;
}
return $outArr;
}
function getBody($dataArr) {
$outArr = [];
foreach ($dataArr as $key => $val) {
$outArr[] = base64url_decode($val->getBody()->getData());
break; // we are only interested in $dataArr[0]. Because $dataArr[1] is in HTML.
}
return $outArr;
}
function base64url_decode($data) {
return base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '=', STR_PAD_RIGHT));
}
function getMessage($service, $userId, $messageId) {
try {
$message = $service->users_messages->get($userId, $messageId);
print 'Message with ID: ' . $message->getId() . ' retrieved.' . "\n";
return $message;
} catch (Exception $e) {
print 'An error occurred: ' . $e->getMessage();
}
}
function listLabels($service, $userId, $optArr = []) {
$results = $service->users_labels->listUsersLabels($userId);
if (count($results->getLabels()) == 0) {
print "No labels found.\n";
} else {
print "Labels:\n";
foreach ($results->getLabels() as $label) {
printf("- %s\n", $label->getName());
}
}
}
// Get the API client and construct the service object.
$client = getClient();
$service = new Google_Service_Gmail($client);
$user = 'me';
// Print the labels in the user's account.
listLabels($service, $user);
// Get the messages in the user's account.
$messages = listMessages($service, $user, [
#'maxResults' => 20, // Return 20 messages.
'labelIds' => 'INBOX', // Return messages in inbox.
]);
foreach ($messages as $message) {
print 'Message with ID: ' . $message->getId() . "\n";
$msgObj = getMessage($service, $user, $message->getId());
$headerArr = getHeaderArr($msgObj->getPayload()->getHeaders());
echo 'Message-ID: ' . $headerArr['Message-ID'];
echo "\n";
echo 'In-Reply-To: ' . (empty($headerArr['In-Reply-To']) ? '' : $headerArr['In-Reply-To']);
echo "\n";
echo 'References: ' . (empty($headerArr['References']) ? '': $headerArr['References']);
echo "\n";
#print_r($headerArr);
$bodyArr = getBody($msgObj->getPayload()->getParts());
echo 'Body: ' . (empty($bodyArr[0]) ? '' : $bodyArr[0]);
}
参照：
https://developers.google.com/gmail/api/quickstart/php
https://developers.google.com/gmail/api/v1/reference/users/messages/modify#php