How can I trigger an email from this php script? - php

Question

I'm new to php and I'm trying to work out how to send myself an email upon successful payment. How would I go about that? If you see half way down the script there is an 'if' statement that defines a successful Stripe Payment Call - so that is the point where an email ought to be sent.
Do I include a POST Email request - like this:
($_POST['email'])) {
$email_to = "me#example.com";
$email_subject = "Email subject line";
And here's the php script that currently works - you'll see the 'IF' statement half way throught the script.
<?php
require('config.inc.php');
session_start();
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$email=$_POST['email'];
// Stores errors:
$errors = array();
// Need a payment token:
if (isset($_POST['stripeToken'])) {
$token = $_POST['stripeToken'];
// Check for a duplicate submission, just in case:
// Uses sessions, you could use a cookie instead.
if (isset($_SESSION['token']) && ($_SESSION['token'] == $token)) {
$errors['token'] = 'You have apparently resubmitted the form.';
} else { // New submission.
$_SESSION['token'] = $token;
}
} else {
$errors['token'] = 'Your subscription cannot be processed because you must have JavaScript enabled. Please try again.';
}
// Set the order amount somehow:
$amount = 2700; // $20, in cents
// Validate other form data!
// If no errors, process the order:
if (empty($errors)) {
// create the charge on Stripe's servers - this will charge the user's card
try {
// Include the Stripe library:
require_once('lib/Stripe.php');
// set your secret key: remember to change this to your live secret key in production
// see your keys here https://manage.stripe.com/account
Stripe::setApiKey(STRIPE_PRIVATE_KEY);
// Charge the order:
$charge=Stripe_Customer::create(array(
"card"=>$token,
"email" => $email,
"plan" =>"newsletter",
));
// Check that it was paid:
if (!empty($charge)) {
//echo $amount;
// Store the order in the database.
// Send the email.
// Celebrate!
/*$cookie_name = "success_msg";
$cookie_value = "Your Payment is successfully done";
setcookie($cookie_name, $cookie_value, time() + (86400 * 30), "/");*/
$_SESSION['success_msg']="Your subcription was successfull - thank you!<br><br>We will send you further details shortly on how to access your account.";
echo "<script>window.location.href='index.php'</script>";
exit(0);
} else { // Charge was not paid!
echo '<div class="alert alert-error"><h4>Payment System Error!</h4>Your payment could NOT be processed (i.e., you have not been charged) because the payment system rejected the transaction. You can try again or use another card.</div>';
}
} catch (Stripe_CardError $e) {
// Card was declined.
$e_json = $e->getJsonBody();
$err = $e_json['error'];
$errors['stripe'] = $err['message'];
} catch (Stripe_ApiConnectionError $e) {
// Network problem, perhaps try again.
} catch (Stripe_InvalidRequestError $e) {
// You screwed up in your programming. Shouldn't happen!
} catch (Stripe_ApiError $e) {
// Stripe's servers are down!
} catch (Stripe_CardError $e) {
// Something else that's not the customer's fault.
}
} // A user form submission error occurred, handled below.
} // Form submission.
?>
asdasd

Answer 1

You could create a function that sends the email:
function sendEmail () {
$email_to = "me#example.com";
$email_subject = "Email subject line";
... ETC ...
}
Then in your script where the payment is successful, just before notifying the user you can include the function:
...
if (!empty($charge)) {
...
// Include your function if you wrote this to an external script
require_once '/path/to/php/sendEmail.function.php';
// Then make use of it:
sendEmail();
/*$cookie_name = "success_msg";
$cookie_value = "Your Payment is successfully done";
setcookie($cookie_name, $cookie_value, time() + (86400 * 30), "/");*/
$_SESSION['success_msg']="Your subcription was successfull - thank you!<br><br>We will send you further details shortly on how to access your account.";
// Redirect the user to a new page
echo "<script>window.location.href='index.php'</script>";
// Then you can exit runtime
exit(0);
}
// Charge was not paid!
else {
echo '<div class="alert alert-error"><h4>Payment System Error!</h4>Your payment could NOT be processed (i.e., you have not been charged) because the payment system rejected the transaction. You can try again or use another card.</div>';
}
...
It's pretty important that the email function will either send the email or just continue as normal as you'd not want a failed email to interupt the users experience. You could have a fallback so that if the email doesnt send it writes it to the database or something but do not exit with an error during this process.