The Zipmark PHP Client library is used to interact with Zipmark's API.

The easiest way to download and install the Zipmark PHP Client is with git:

git clone git://github.com/zipmark/zipmark-php.git /path/to/zipmark/client

This library depends on PHP 5.3.6 (or higher) and libcurl compiled with OpenSSL support. phpinfo(); should show information like the following:

curl

cURL support => enabled
cURL Information => 7.21.4
Age => 3
Features
AsynchDNS => Yes
Debug => No
GSS-Negotiate => Yes
IDN => No
IPv6 => Yes
Largefile => Yes
NTLM => Yes
SPNEGO => No
SSL => Yes
SSPI => No
krb4 => No
libz => Yes
CharConv => No
Protocols => dict, file, ftp, ftps, gopher, http, https, imap, imaps, ldap, ldaps, pop3, pop3s, rtsp, smtp, smtps, telnet, tftp
Host => universal-apple-darwin11.0
SSL Version => OpenSSL/0.9.8r
ZLib Version => 1.2.5

openssl

OpenSSL support => enabled
OpenSSL Library Version => OpenSSL 0.9.8r 8 Feb 2011
OpenSSL Header Version => OpenSSL 0.9.8r 8 Feb 2011

The Zipmark PHP Client supports both global and local client credentials. The client is loaded by requiring a single file:

require_once('./lib/zipmark.php');

The Zipmark PHP client supports objects and lists of objects.

$client = new Zipmark_Client("Application Identifier", "Application Secret");

Application Identifier and Application Secret should be replaced with the vendor application identifier and secret provided by Zipmark.

The Zipmark PHP client will access Zipmark's sandbox environment by default. To direct traffic to Zipmark's production environment, enable production mode with the following:

$client->setProduction(true);

$bill = $client->bills->get("Bill ID");

$resources = $client->resources();

Resources will contain an array of all available resources.

Create a bill object, set required attributes, send it to Zipmark

$bill_data = array(
  'identifier'       => 'abc123',           // Unique Bill Identifier
  'amount_cents'     => 100,                // Bill amount in cents
  'bill_template_id' => 'UUID',             // UUID of Bill Template from Zipmark
  'memo'             => 'Memo to customer', // Text memo shown to customer
  'date'             => 'YYYY-MM-DD',       // Date of Bill issuance
  'content'          => '{}',               // JSON String with Bill content - rendered with template
);

$bill = $client->bills->create($bill_data);

As an alternative, it is possible to build an object first and then save it afterwards

$bill_data = array(
  'identifier'       => 'abc123',           // Unique Bill Identifier
  'amount_cents'     => 100,                // Bill amount in cents
  'bill_template_id' => 'UUID',             // UUID of Bill Template from Zipmark
  'memo'             => 'Memo to customer', // Text memo shown to customer
  'date'             => 'YYYY-MM-DD',       // Date of Bill issuance
  'content'          => '{}',               // JSON String with Bill content - rendered with template
);

$bill = $client->bills->build($bill_data);

$bill->save();

Get the bill, make a change, send it back to Zipmark

$bill = $client->bills->get("Bill ID");

$bill->memo = "Please pay with Zipmark";

$bill->save();

Retrieve a list of all bills.

$bills = $client->bills->getAll();

Get the number of objects available.

$bills->count();

The Zipmark_Iterator class understands Zipmark's pagination system. It loads one page of objects at a time and will retrieve more objects as necessary while iterating through the objects.

$bills = $client->bills->getAll();
$iterator = new Zipmark_Iterator($bills);

Get the current object (returns null if the iterator has passed either end of the list)

$bill = $iterator->current();

Get the next/previous object (returns null if the next/previous object would pass either end of the list)

$bill = $iterator->next();
$bill = $iterator->prev();

The Zipmark_Iterator can be used to iterate through all objects of a given resource type.

$iterator = new Zipmark_Iterator($client->bills->getAll());

foreach ($iterator as $bill) {
  print "Bill " . $iterator->key() . " is ID ";
  print $bill->id . " for " . $bill->amount_cents . " cents.\n";
}

Which would result in output similar to:

Bill 0 is ID 3cf1290adc08b28899dd7c7e263cca4dc9a2 for 1234 cents
Bill 1 is ID 3cf1b7bc6cfbaeb6b8b2a6001037d284c918 for 100 cents
Bill 2 is ID 3cea3cab019984233228c2eaff0edcbbb733 for 3456 cents
Bill 3 is ID 3ceaf09259f883159622aa4401ab7d06d45a for 2345 cents
Bill 4 is ID 3cea079b288120ffb129dfb62ae18de3dfee for 1234 cents
Bill 5 is ID 3ce95db62b1069e59e122c515eb191c70987 for 12345 cents
Bill 6 is ID 3ce627f7559478bee1129dae3203e373f0df for 1030 cents
Bill 7 is ID 3ce69e91d68417d1e9892ca903eba8c66a2e for 1030 cents
Bill 8 is ID 3ce6eb4a5b433f3e9b073d15a5ff725dec46 for 1020 cents
Bill 9 is ID 3ce66b0e9a510f90fb26906dd0da04df6de0 for 101 cents

The client is able to process, verify and extract data from callbacks received from the Zipmark service.

A Zipmark_Callback object must be initialized with a Zipmark_Client object and the HTTP callback content (headers and body)

The array of HTTP headers sent in the callback POST should be contained in the $_SERVER variable. The body of the callback POST should be accessible through the call file_get_contents('php://input');

$callback = new Zipmark_Callback($client, $httpHeaders, $httpBody);

$callbackValid = $callback->isValid();

$callbackValid will contain a true or false value.

Valid callbacks contain events, object types and objects. The below functions will return their respective values/objects, or null if the callback is invalid.

$callbackEvent      = $callback->event();
$callbackObjectType = $callback->objectType();
$callbackObject     = $callback->object();

Please see the Zipmark API or contact Zipmark Support via email or chat for more information.

The Zipmark PHP Client library includes unit tests to verify all implemented functionality. The unit tests are built with SimpleTest and can be run from the command line as:

$ /path/to/zipmark/php/client/test/all_tests.php