Member Avatar for drewpark88

Hey Everyone,

I am getting an error with a PHP script made using the Authorize.net AIM (Advanced Integration Method) API for my donation form. I have gone over the code dozens of times and still do not know why it is not working. Everything works except the most important part...it will not process the credit card. I would like to know if anyone would mind looking over my code for a debug? If you are willing to but need to be compensated please give a link to your portfolio. Thank you

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A short, practical debugging checklist for the Authorize.net AIM "card declined" symptom.

Generic declines usually point to a gateway or transport issue rather than a PHP syntax error. Common root causes: wrong environment (sandbox vs live), incorrect API login/transaction key, malformed POST field names or delimiters, transport/SSL problems, or gateway-side fraud/AVS/CVV rules. Because no request/response was posted, as suggested a minimal reproducible example is needed — using seven different scripts makes isolation difficult; reduce the flow to a single test file.

Essential, sanitized items that let others help quickly: the sanitized POST array sent to the gateway (mask card digits and remove keys), the raw gateway response string and any numeric response/reason codes, transport-level output (HTTP status and cURL/fsockopen verbose logs), PHP/cURL/OpenSSL versions, and whether the account/endpoint is sandbox or production and whether the merchant interface is set to Test Mode. Never post real API keys or unmasked card numbers.

Practical step-by-step checklist: 1) Collapse to one minimal script that sends only required fields; 2) Enable verbose cURL (or stream/socket) logging and capture the full request and response; 3) Verify field names/delimiters and that x_test_request / test-mode match the endpoint; 4) Inspect AVS/CVV and gateway subcodes (these often explain an apparent "decline"); 5) If sandbox is used, test with sandbox test numbers only; if live, try a small charge and, if still declined, request the processor/gateway decline reason from merchant support. ’s line-37 quip isn’t actionable; ’s pointer to the gateway’s developer resources is sensible once logs are available.

Masking helper (log only sanitized data):

function mask_cc($s){ return preg_replace('/\d(?=\d{4})/', 'X', $s); }
$log = $_POST;
if (isset($log['x_card_num'])) $log['x_card_num'] = mask_cc($log['x_card_num']);
unset($log['x_tran_key'], $log['x_login']);
file_put_contents('/tmp/authnet-debug.log', print_r($log, true), FILE_APPEND);

A concise, sanitized request/response plus the environment details above will usually reveal the cause quickly.

Recommended Answers

All 5 Replies

Member Avatar for cwarn23

The classic question with no code. I would like to try and debug it but can't see any code to debug. Could you please post your code and your errors so that we at least have a chance of solving this.

Hey Everyone,

I am getting an error with a PHP script made using the Authorize.net AIM (Advanced Integration Method) API for my donation form. I have gone over the code dozens of times and still do not know why it is not working. Everything works except the most important part...it will not process the credit card. I would like to know if anyone would mind looking over my code for a debug? If you are willing to but need to be compensated please give a link to your portfolio. Thank you

Member Avatar for drewpark88

I apologize for the lack of code, I am using about 7 different php scripts to execute this task. So the only reason I didn't post all of my code is because I am not receiving an error code on line whatever...instead I am getting a generic error from authorize.net saying basically that the card has been declined and have tried several family members cards to test it.

The classic question with no code. I would like to try and debug it but can't see any code to debug. Could you please post your code and your errors so that we at least have a chance of solving this.

Member Avatar for Member #120589

I apologize for the lack of code, I am using about 7 different php scripts to execute this task. So the only reason I didn't post all of my code is because I am not receiving an error code on line whatever...instead I am getting a generic error from authorize.net saying basically that the card has been declined and have tried several family members cards to test it.

SO let me get this right. You don't know which script is causing the problem. You are using an API. You expect us to get out the crystal balls?

"I see through the fog, the mist is clearing..."

Look at line 37 and take out the last variable in the array.

How's that?

Member Avatar for chrishea

I don't think that's enough. The array isn't being loaded correctly either!

But seriously though. You may have better luck using the authorize.net forum to see if anyone else has encountered similar problems and what the cause was.
http://community.developer.authorize.net/

Member Avatar for drewpark88

I have got to admit you make a good point and that was pretty funny. I am sorry for being unclear and not posting the code. I will close this, just thought if some one wanted to accept my offer I would send then the code to be evaluated. Never Mind : )

SO let me get this right. You don't know which script is causing the problem. You are using an API. You expect us to get out the crystal balls?

"I see through the fog, the mist is clearing..."

Look at line 37 and take out the last variable in the array.

How's that?

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