I am programmatically saving the products in Magento backend reading from CSV. How to log if SKU already exist or not if the product failure or success need to log in Magento. How to achieve this.


You can use the Psr\Log\LoggerInterface in your file to log data or custom message like below example.

protected $logger;
public function __construct(\Psr\Log\LoggerInterface $logger)
    $this->logger = $logger;

then use debug, exception, system for in Logger to display message :


if you are not going to inject than you can use with objectmanager also like:


Another way is to use zend library to print logs like

$writer = new \Zend\Log\Writer\Stream(BP . '/var/log/test.log');
$logger = new \Zend\Log\Logger();
$logger->info('Array Log'.print_r($myArray, true));

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