Magento 2 show cart items count in header We can use Magento\Checkout\Helper\Cart to get the items count in header.
Magento 2 show cart items count in header Example
You can get the total number of items and display count in header simply as below-
Magento 2 show cart items count in header Example:
$counter = $this->helper('\Magento\Checkout\Helper\Cart');
echo $counter->getItemsCount();
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