Get the bed position

Can anyone help me to get the position of the bed when player touch it!

 

PlayerInteractEvent?

PHP:

$block = $event->getBlock();
if ($block === Block::BED) { // Have a check for if the block interacted with is a bed block. Not sure if this is right though.
       $x = $block->getX();
       $y = $block->getY();
       $z = $block->getZ();
       echo 'Bed Block detected at '.$x.'X '.$y.'Y '.$z.'Z';
}

 

thanks