Fetch Mails from Gmail in Core PHP

Fetch Mails in Core PHP

1. Create an Core php app on console (https://console.developers.google.com).
2. Download Google Client library from the following link (https://github.com/googleapis/google-api-php-client)
3. Download the file of credentials(client_id,client_secret) and put it in the project directory.
4. Create the config file in the root directory and paste the below code.

   <?php
//path of autoload file
require_once 'vendor/autoload.php';
$client = new Google_Client();
$client->setAuthConfig('filename of credentials');
$client->addScope(Google_Service_Gmail::MAIL_GOOGLE_COM);
$client->addScope('email');
$client->addScope('profile');
$client->setRedirectUri('RedirectURL that you saved in console app');
$client->setAccessType('offline');
$client->setApprovalPrompt("force");
?>

5. Enable Gmail API.

   

   Search for Gmail and click on Gmail API

   

   

6. Create google_connect_file and paste below code(Login Button )

   Include config file
$login_button= "";
if(isset($_GET["code"])){
$token = $client->fetchAccessTokenWithAuthCode($_GET["code"]);
if(!isset($token["error"])){
$client->setAccessToken($token);
$_SESSION["access_token"] = $token;
//also save in the database if you want a session with google only end when you logout.
}else{
header('logout from google');
}
}
if(!$_SESSION["access_token"]){
$login_button = '<div class="forgot-link display-inline-block ">
<a href="'.$client->CreateAuthUrl().'" class="google social-login-btn google-login"><i class="fa fa-google fa-fw"></i> Login with Google </a>
</div>';
}
if( $login_Button==””){
<a style="color: #337AB7;font-weight:bold;font-size:16px" href="link to page to view emails">View Emails </a>   <a style="color: #337AB7" class="loginButton" href=" link to logout page" > Logout </a>
}esle{
echo $login_Button;
}

7. Create a file for fetching emails from Gmail and paste below code

   Include config file created on the top
$gmail = new Google_Service_Gmail($client);
$search = "category:primary label:inbox";
$inboxMessage = [];
try{
$params = array();
$params = array('maxResults'=>50,'q'=>$search);
if($_POST['nextpagetoken'] != 0){
$params['pageToken'] = $token;
}
$list = $gmail->users_messages->listUsersMessages('me',$params);
$email = $gmail->users->getProfile('me')->getEmailAddress( );
$messageList = $list->getMessages();
$nextpagetoken = $list->getNextPageToken( );
foreach($messageList as $mlist){
$optParamsGet2['format'] = 'full';
$single_message = $gmail->users_messages->get('me',$mlist->id, $optParamsGet2);
$body = msg_body_recursive($single_message->getPayload());
$body_data = array_key_exists('html', $body) ? $body['html'] : $body['plain'];
$message_id = $mlist->id;
$headers = $single_message->getPayload()->getHeaders();
$snippet = $single_message->getSnippet();
$message_subject = "";
$message_date = "";
$sender = "";
$message_to = "";
foreach($headers as $single) {
if ($single->getName() == 'Subject') {
$message_subject = $single->getValue();
}
else if ($single->getName() == 'Date') {
$message_date = $single->getValue();
$message_date = date('m/d/yy h:m A', strtotime($message_date));
}
else if ($single->getName() == 'From') {
$sender = htmlentities($single->getValue());
}else if ($single->getName() == 'To') {
$message_to = $single->getValue();
$message_to = str_replace('"', '', $message_to);
}
}
$messageId = GetMessageWithId($message_id);
if(!count($messageId)){
$inboxMessage[] = [
'messageId' => $message_id,
'messageSnippet' => $snippet,
'messageSubject' => $message_subject,
'messageDate' => $message_date,
'messageSender' => $sender,
'messageTo'=>$message_to,
'Body'=>$body_data
}
}
//It will print final result
print_r($inboxMessage);
function msg_body_recursive($part) {
if($part->mimeType == 'text/html') {
return ['html' => decodeBody($part->body->data)];
} else if($part->mimeType == 'text/plain') {
return ['plain' => decodeBody($part->body->data)];
} else if($part->parts) {
$return = [];
foreach($part->parts as $sub_part) {
$result = msg_body_recursive($sub_part);
$return = array_merge($return, $result);
if(array_key_exists('html', $return))
break;
}
return $return;
}
return [];
}
function decodeBody($encoded) {
$sanitizedData = strtr($encoded,'-_', '+/');
return base64_decode($sanitizedData);
}