eway direct payment curl code not working - php

Question

I am trying to charge the customer using eway payment method. I am implementing the procedure through curl and here is the code to the function.
public function testing_direct() {
$url = 'https://api.sandbox.ewaypayments.com/DirectPayment.json'; // PROD
$postData = array(
'Method' => 'TokenPayment',
'TransactionType' => 'Recurring',
'TokenCustomerID' => '918549937032',
'TotalAmount' => '1995',
'InvoiceNumber' => '123',
'InvoiceDescription' => 'testing'
);
$ch = curl_init($url);
$api_authentication = base64_encode('####;****');
curl_setopt_array($ch, array(
CURLOPT_POST => TRUE,
CURLOPT_RETURNTRANSFER => TRUE,
CURLOPT_HTTPHEADER => array(
'Content-Type: application/json','Authorization:####'
),
CURLOPT_POSTFIELDS => json_encode($postData)
));
$response = curl_exec($ch);
// Check for errors
if ($response === FALSE) {
die(curl_error($ch));
}
$responseData = json_decode($response, TRUE);
print_r($responseData);
die;
}
This code doesnot print anything at all...Nothing in the error log either...any ideas that why it is not working??
Thanks

Answer 1

There are a few things that need to be fix to get that script working, particularly around the authentication which is the most immediate cause of a problem.
There needs to be a check of the HTTP status of the request since curl_exec only returns FALSE if there is an error - e.g. a 404 (page not found) or 401 (unauthorized) is still treated as a successful request.
// Check for errors
if ($response === FALSE) {
die(curl_error($ch));
}
$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($code != 200) {
die('HTTP error: '.$code);
}
The actual authentication appears to suffer from 2 main issues: there is a semicolon instead of a colon between the username (API key) and password, and the Basic part of the authentication is missing:
$api_authentication = base64_encode('####:****');
CURLOPT_HTTPHEADER => array(
'Content-Type: application/json','Authorization: Basic '.$api_authentication
),
This could be simplified by just using CURLOPT_USERPWD:
CURLOPT_USERPWD => '####:****',
Apart from that, note that the $postData array needs some extra nesting: TokenCustomerID should be a child of Customer and TotalAmount and the Invoice fields should be children of Payment:
$postData = array(
'Method' => 'TokenPayment',
'TransactionType' => 'Recurring',
'Customer' => array(
'TokenCustomerID' => '911058757297',
),
'Payment' => array(
'TotalAmount' => '1900',
'InvoiceNumber' => '123',
'InvoiceDescription' => 'testing',
),
);
Check out the example in the documentation for a complete example request.
Good luck!