The GNU Taler tutorial for PHP Web shop developers 0.4.0

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include "backend.php";
include "error.php";

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$response = get_to_backend("/history", $_GET);

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echo build_error($response,
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return;

// Give the response "verbatim" back.
echo $response["body"];
?>
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4 Advanced topics
Detecting the presence of the Taler wallet
Detecting the presence of the Taler wallet
The Taler proposal format
The Taler proposal format
Instances
Instances
The fulfillment page
The fulfillment page
Normalized base URLs
Normalized base URLs
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4.1 Detecting the presence of the Taler wallet
Taler offers the way to the frontend developer to detect whether
a user has the wallet installed in their browser, and take actions
accordingly.
4.1.1 The no-JavaScript way
The follwing example shows all that is needed to perform the detection
without using JavaScript:




type="text/css"
href="/web-common/taler-fallback.css"
id="taler-presence-stylesheet" />

No wallet found.

Wallet found!

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Contents
][
Index
Concept Index
Jump to:
Index Entry
Section
402
Prompting for payment
402 payment required
Initiating the payment process
amount
The Taler proposal format
back office
Introduction
backend
Introduction
backend
Hello-world
backend
Hello-world
backend
Prompting for payment
button
Prompting for payment
configuration
Hello-world
contract
Prompting for payment
contract
The Taler proposal format
currency
Hello-world
examples
Introduction
fees
The Taler proposal format
fees
The Taler proposal format
fees
The Taler proposal format
frontend
Introduction
fulfillment page
The fulfillment page
fulfillment URL
Initiating the payment process
fulfillment URL
The Taler proposal format
git
Introduction
GNU Free Documentation License
GNU-FDL
instances
Instances
LGPL
GNU-LGPL
license
GNU-LGPL
license
GNU-FDL
location
The Taler proposal format
maximum deposit fee
The Taler proposal format
maximum fee amortization
The Taler proposal format
maximum wire fee
The Taler proposal format
order
Prompting for payment
order ID
The Taler proposal format
pay handler
Prompting for payment
payment
Payment
payment deadline
The Taler proposal format
pay_url
The Taler proposal format
product description
The Taler proposal format
refund
Refund
refund deadline
The Taler proposal format
refund deadline
Refund
signature
Prompting for payment
summary
The Taler proposal format
tipping
Tipping
wallet
Detecting the presence of the Taler wallet
X-Taler-Contract-Query
Initiating the payment process
X-Taler-Contract-Url
Prompting for payment
X-Taler-Contract-Url
Initiating the payment process
X-Taler-Offer-Url
Initiating the payment process
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