<?php 

use Magento\Framework\App\Bootstrap; 

$rootDirectory = dirname(__FILE__);  

require $rootDirectory . '/app/bootstrap.php';

// Instantiate Magento so we can use it outside the framework. 
$params = $_SERVER;
$bootstrap = Bootstrap::create(BP, $params);
$obj = $bootstrap->getObjectManager();
$state = $obj->get('Magento\Framework\App\State');
$state->setAreaCode('adminhtml');

// We need to set the area to secure so that we can delete customers. 
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$objectManager->get('Magento\Framework\Registry')->register('isSecureArea', true);

for($i=1; $i<=44; $i++) {

echo 'Batch ' . $i . "\n";

$customerCollection = $objectManager->create('Magento\Customer\Model\ResourceModel\Customer\Collection')
	->addAttributeToSelect('*')
	->addAttributeToFilter([
	        ['attribute' => 'email', 'like' => '%@qq.com'],
	]);

$customerCollection->getSelect()->limit(1000);

foreach($customerCollection as $customer )
{
	// Let's check if the customer has an address.  
	// If they do have an address, the liklihood of it being spam is low so we'll skip and not delete. 
	$addresses = $customer->getAddresses();

	if ($addresses) 
		continue;

	// Check if customer has an order. 
	// If they do have an order, the liklihood of it being spam is low so we'll skip and not delete. 
	$_orders = $objectManager->create('Magento\Sales\Model\ResourceModel\Order\Collection')
        ->AddAttributeToSelect('*')
        ->addAttributeToFilter(
            'customer_id', $customer->getId()
        )
        ->load();

	if ($_orders->count()) 
		continue;

	// Delete customer 
	try {
		// TODO: Create a log if you'll like to a record of deleted customers. 
		$customer->delete();
		// break;  // Uncomment this to delete one at a time for testing. 
	} catch (\Exception $e) {
		// TODO: Handle exception.  Just printing for now. 
		print($e->getMessage());
	}
}
}