问通过GMAIL API从PHP站点发送电子邮件

EN

<?php
require '/var/www/html/vendor/autoload.php'; // For Google Client Composer

// Replace this with your Google Client ID
$client_id     = 'blabla.apps.googleusercontent.com';
$client_secret = 'secret';
$redirect_uri  = 'https://www.redirecturl'; 

$client = new Google_Client();
$client->setClientId($client_id);
$client->setClientSecret($client_secret);
$client->setRedirectUri($redirect_uri);
$client->setAccessType('offline'); //Added for Refresh Token
$client->setApprovalPrompt('force'); //Added for Refresh Token

// We only need permissions to compose and send emails
$client->addScope("https://www.googleapis.com/auth/gmail.compose");

// Redirect the URL after OAuth
if (isset($_GET['code'])) {
  $client->authenticate($_GET['code']);
  $_SESSION['access_token'] = $client->getAccessToken();
}

// If Access Token is not set, show the OAuth URL
if (isset($_SESSION['access_token']) && $_SESSION['access_token']) {
  $display = "display: none";
  $client->setAccessToken($_SESSION['access_token']);
} else {
  $authUrl = $client->createAuthUrl();
}

$access_token = $client->getAccessToken();

echo '<a href="'.$authUrl.'" style="'.$display.'">Authorize ME PLZ</a>';

if ($access_token != null) {
  echo "You're In!";
}

// Saves Access Token Into Database to be Used In SEND_MAIL function
$mysqli = new mysqli('servername', 'username', 'password', 'database');
$stmt = $mysqli->prepare("INSERT INTO refresh_token (refresh, original) VALUES (?, ?)");
$stmt->bind_param("ss", json_encode($access_token), json_encode($access_token)); // Updated to remove warning
$stmt->execute();
$stmt->close();
?>

<?php

require '/var/www/html/vendor/autoload.php';

   function SEND_MAIL($RECIPIENT,$EMAILSUBJECT,$EMAILBODY){

      //Get Refresh Token From Database set when running Authentication File
      $conn = new mysqli("servername", "username", "password", 'database');

      $sql = "SELECT * FROM refresh_token";
      $result = $conn->query($sql);
      if ($result->num_rows > 0) {
          while($row = $result->fetch_assoc()) {
             $token = $row['original'];
             $refresh_token = $row['refresh'];
          }
      }
      $conn->close();

      // Replace this with your Google Client ID
      $client_id     = 'blabla.apps.googleusercontent.com';
      $client_secret = 'secret';
      $redirect_uri  = 'https://www.redirecturl'; 

      $client = new Google_Client();
      $client->setClientId($client_id);
      $client->setClientSecret($client_secret);
      $client->setRedirectUri($redirect_uri);
      $client->addScope("https://www.googleapis.com/auth/gmail.compose");
      $client->setAccessType('offline');
      $client->setApprovalPrompt('force');

      $client->setAccessToken($token);

      if ($client->isAccessTokenExpired()) {
      $client->refreshToken($refresh_token);
      $newtoken = $client->getAccessToken();
      $client->setAccessToken($newtoken);
      }

      $service = new Google_Service_Gmail($client);

      $fromemail = "<the-email-you-want-to-send-from>@gmail.com";

      $strRawMessage = "From: Email <$fromemail> \r\n";
      $strRawMessage .= "To: <$RECIPIENT>\r\n";
      $strRawMessage .= 'Subject: =?utf-8?B?' . base64_encode($EMAILSUBJECT) . "?=\r\n";
      $strRawMessage .= "MIME-Version: 1.0\r\n";
      $strRawMessage .= "Content-Type: text/html; charset=utf-8\r\n";
      $strRawMessage .= 'Content-Transfer-Encoding: quoted-printable' . "\r\n\r\n";
      $strRawMessage .= "$EMAILBODY\r\n";
      $mime = rtrim(strtr(base64_encode($strRawMessage), '+/', '-_'), '=');
      $msg = new Google_Service_Gmail_Message();
      $msg->setRaw($mime);
      $service->users_messages->send("me", $msg);
   }

   SEND_MAIL('test@me.com', 'Test', 'Hey!');

   ?>