Retrieve Error Message with array - php

Question

I have using a version of GoCardless's API in PHP to process payments on my website. However when their API returns an error I would like to display the user more effective errors.
I have got half way there but I was wondering if there is anyway I could do the following:
If I have the following error:
Array ( [error] => Array ( [0] => The resource has already been confirmed ) )
Is there anyway to extract just the The resource has already been confirmed part with PHP?
My Code:
try{
$confirmed_resource = GoCardless::confirm_resource($confirm_params);
}catch(GoCardless_ApiException $e){
$err = 1;
print '<h2>Payment Error</h2>
<p>Server Returned : <code>' . $e->getMessage() . '</code></p>';
}
Thanks.
UPDATE 1:
Code that triggers the exception:
$http_response_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($http_response_code < 200 || $http_response_code > 300) {
// Create a string
$message = print_r(json_decode($result, true), true);
// Throw an exception with the error message
throw new GoCardless_ApiException($message, $http_response_code);
}
UPDATE 2 :-> print_r($e->getMessage()) Output:
Array ( [error] => Array ( [0] => The resource has already been confirmed ) )

Answer 1

The method $e->getMessage() appears to return an array with an index 'error' wich is an array again that contains the message text. If you ask me this is bad API design
However you can access the message text like this:
try{
$confirmed_resource = GoCardless::confirm_resource($confirm_params);
}catch(GoCardless_ApiException $e){
$err = 1;
$message = $e->getMessage();
$error = $message['error'];
print '<h2>Payment Error</h2>
<p>Server Returned : <code><' . $error[0] . "</code></p>";
}

Answer 2

If you look into the GoCardless_ApiException class code you'll see that there's a getResponse() method that you could use to access the error element of the response array...
$try{
$confirmed_resource = GoCardless::confirm_resource($confirm_params);
}catch(GoCardless_ApiException $e){
$err = 1;
$response = $e->getResponse();
print '<h2>Payment Error</h2>
<p>Server Returned : <code>' . $response['error'][0] . "</code></p>";
}

Answer 3

I discovered the problem, the output from $e->getMessage() was a plain string, NOT an array.
So I edited the Request.php file to the following:
$http_response_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($http_response_code < 200 || $http_response_code > 300) {
// Create a string <<-- THE PROBLEM -->>
// $message = print_r(json_decode($result, true), true);
$message_test = json_decode($result, true);
// Throw an exception with the error message
// OLD - throw new GoCardless_ApiException($message, $http_response_code);
throw new GoCardless_ApiException($message_test[error][0], $http_response_code);
}
and then my php file :
try{
$confirmed_resource = GoCardless::confirm_resource($confirm_params);
}catch(GoCardless_ApiException $e){
$err = 1;
$message = $e->getMessage();
print '<h2>Payment Error</h2>
<p>Server Returned : <code>' . $message . "</code></p>";
}
and the page outputs:
Payment Error
Server Returned : The resource has already been confirmed