magento2 – Display Discounted Price in the Product view

magento2 – Display Discounted Price in the Product view – Magento Stack Exchange

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<?php
$priceModel = $block->getPriceType('regular_price');
$finalPriceModel = $block->getPriceType('final_price');
$idSuffix = $block->getIdSuffix() ? $block->getIdSuffix() : '';
$schema = ($block->getZone() == 'item_view') ? true : false;
$valor = $_product->getResource()->getPrice('special_price')->getFrontend()->getValue($_product);
$total = $_product->getFinalPrice();
$percent = $_product->getResource()->getAttribute('desconto')->getFrontend()->getValue($_product);
$discount_value = ($total / 100) * $percent;
$final_price = $total - $discount_value; 
?>```

Can anybody help me? I’m converting a module from Magento 1 to 2. I put this section to show a price in the product view with a 10% discount in case the customer wants to pay in advance. This value of 10 is taken from a custom product attribute so that when I want to offer 15 I enter the product and make the change. But my codex is giving an error on line 5 Undefined variable. I’ve already made some changes but none of them worked and I can’t display them on the frontend.