config( 123456, // Merchant ID 'sharedSecret', // Shared Secret KlarnaCountry::SE, // Country KlarnaLanguage::SV, // Language KlarnaCurrency::SEK, // Currency Klarna::BETA, // Server 'json', // PClass Storage '/srv/pclasses.json', // PClass Storage URI path true, // SSL true // Remote logging of response times of xmlrpc calls ); // OR you can set the config to loads from a file, for example /srv/klarna.json: // $k->setConfig(new KlarnaConfig('/srv/klarna.json')); /** * 2. Reserve the OCR numbers. */ try { // Reserve the OCR number(s): $result = $k->reserveOCR( 1 // Number of OCR numbers you wish to reserve. ); echo "Result: \n"; foreach ($result as $r) { echo "{$r}\n"; } /* $result now contains an array of OCR numbers, proceed accordingly. */ } catch(Exception $e) { // Something went wrong, print the message: echo "{$e->getMessage()} (#{$e->getCode()})\n"; }