Magento 2 Write to Custom Log Files

Magento-2-Write-to-Custom-Log-Files

// quick log
$writer = new \Zend\Log\Writer\Stream(BP . '/var/log/test.log'); 
$logger = new \Zend\Log\Logger(); 
$logger->addWriter($writer); 
$logger->info('Your text message'); 

// 2.4.3 + syntax
$writer = new \Zend_Log_Writer_Stream(BP . '/var/log/test.log');
$logger = new \Zend_Log();
$logger->addWriter($writer);
$logger->info('Your text message'); 

$logger->info(print_r($yourArray, true)); 

\Magento\Framework\App\ObjectManager::getInstance() 
    ->get(\Psr\Log\LoggerInterface::class)->debug('message');