checkout.php

$session = \Stripe\Checkout\Session::create([
	'payment_method_types' => ['card'],
	'line_items' => [[
		'price_data' => [
			'unit_amount' => 5000, # $50 per month
			'currency' => 'usd',
			'product_data' => ['name' => 'My Service Plan'],
			'recurring' => [
				'interval' => 'month',
			],
		],
		'quantity' => 1,
	], [
		'price_data' => [
			'unit_amount' => 1000,  # $10 one time setup fee
			'currency' => 'usd',
			'product_data' => ['name' => 'My Service Plan Setup fee'],
		],
		'quantity' => 1,
	]],
	'mode' => 'subscription',
	'success_url' => 'https://example.com/success?session_id={CHECKOUT_SESSION_ID}',
	'cancel_url' => 'https://example.com/cancel',
]);
echo $session;