How to print or debug array or object in Magento 2?

Question

I am working on Magento 2.

if ($this->getRequest()->isAjax()) {
    $layout =  $this->_layout;
}

How can I print or debug value of $layout in above code ??

Answer 1

On top of what Ashar Riaz said, you can also use the debug method from \Psr\Log\LoggerInterface :

$this->_logger->debug(var_export($layout, true));

IIRC, the values will be logged under var/log/debug.log

Answer 2

you can print $layout in log file like in below code and see results in var/log/debug.log file

class Example{
protected $_logger;
public function __construct(
    \Psr\Log\LoggerInterface $logger, //log injection
    array $data = []
) {
    $this->_logger = $logger;
    parent::__construct($data);
}
public function someExampleMethod() {
    /*
    some logic of method
    */
    //accessing to logger instance and calling log method
    $this->_logger->log('some text or variable');
    /// for array use this
   // $this->_logger->log(100,print_r($layout,true));
}

}

you can also print it like that to see result

print_r($layout);exit;

Answer 3

You can print any object using debug function. Review below link

https://github.com/magento/magento2/blob/2.3-develop/lib/internal/Magento/Framework/DataObject.php#L461-L489

for print layout object you can use

$layout->debug()

Answer 4

Hope, it will be helpful.

print_r($layout);

Answer 5

var_dump() is a good way too, you could use <pre> to format the output.

echo "<pre>";
var_dump($layout);
echo "</pre>";
exit;