// Create PhpImap\Mailbox instance for all further actions
$mailbox = new PhpImap\Mailbox(
	'{imap.gmail.com:993/imap/ssl}INBOX', // IMAP server and mailbox folder
	'[email protected]', // Username for the before configured mailbox
	'*********', // Password for the before configured username
	__DIR__, // Directory, where attachments will be saved (optional)
	'UTF-8' // Server encoding (optional)
);

// set some connection arguments (if appropriate)
$mailbox->setConnectionArgs(
    CL_EXPUNGE // expunge deleted mails upon mailbox close
    | OP_SECURE // don't do non-secure authentication
);

try {
	// Get all emails (messages)
	// PHP.net imap_search criteria: http://php.net/manual/en/function.imap-search.php
	$mailsIds = $mailbox->searchMailbox('ALL');
} catch(PhpImap\Exceptions\ConnectionException $ex) {
	echo "IMAP connection failed: " . $ex;
	die();
}

// If $mailsIds is empty, no emails could be found
if(!$mailsIds) {
	die('Mailbox is empty');
}

// Get the first message
// If '__DIR__' was defined in the first line, it will automatically
// save all attachments to the specified directory
$mail = $mailbox->getMail($mailsIds[0]);

// Show, if $mail has one or more attachments
echo "\nMail has attachments? ";
if($mail->hasAttachments()) {
	echo "Yes\n";
} else {
	echo "No\n";
}

// Print all information of $mail
print_r($mail);

// Print all attachements of $mail
echo "\n\nAttachments:\n";
print_r($mail->getAttachments());

// Call imap_check();
// http://php.net/manual/en/function.imap-check.php
$info = $mailbox->imap('check'); //

// Show current time for the mailbox
$currentServerTime = isset($info->Date) && $info->Date ? date('Y-m-d H:i:s', strtotime($info->Date)) : 'Unknown';

echo $currentServerTime;

// If you don't need to grab attachments you can significantly increase performance of your application
$mailbox->setAttachmentsIgnore(true);

// get the list of folders/mailboxes
$folders = $mailbox->getMailboxes('*');

// loop through mailboxs
foreach($folders as $folder) {

	// switch to particular mailbox
	$mailbox->switchMailbox($folder['fullpath']);

	// search in particular mailbox
	$mails_ids[$folder['fullpath']] = $mailbox->searchMailbox('SINCE "1 Jan 2018" BEFORE "28 Jan 2018"');
}

print_r($mails_ids);