How can PHP be used to display the total cost to the user after they have selected their pricing option and input the quantity of copies?

To display the total cost to the user after they have selected their pricing option and input the quantity of copies, you can use PHP to calculate the total cost based on the selected pricing option and quantity input by the user. This can be done by retrieving the pricing option and quantity values from the form submission, performing the necessary calculations, and then displaying the total cost to the user. 

<?php
// Retrieve pricing option and quantity values from form submission
$pricingOption = $_POST['pricing_option'];
$quantity = $_POST['quantity'];

// Calculate total cost based on pricing option and quantity
if ($pricingOption == 'option1') {
    $pricePerCopy = 0.10;
} elseif ($pricingOption == 'option2') {
    $pricePerCopy = 0.08;
} elseif ($pricingOption == 'option3') {
    $pricePerCopy = 0.05;
}

$totalCost = $pricePerCopy * $quantity;

// Display total cost to the user
echo 'Total cost: $' . number_format($totalCost, 2);
?>

Keywords

PHP form handling calculations user input output display

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