interswitch quickteller API integration in php - php

Question

i have to add interswitch payment methods in my web application but i am receiving error
following is my code
function billersCategories()
{
$nonce=$randomNum=substr(str_shuffle("0123456789abcdefghijklmnopqrstvwxyz"), 0, 60);
$date = new DateTime();
$timestamp=$date->getTimestamp();
// Signature
$httpMethod = "GET";
$url='https://sandbox.interswitchng.com/api/v2/quickteller/categorys';
$clientId = "IKIA9D98ABCDEFGHIFAKEID1E09104959B9755C41E1";
$clientSecretKey = "d5uAr+U8QhSv8vQtKPDIUI62327Fsfsfsf65=";
$signatureCipher = $httpMethod."&".$url."&".$timestamp."&".$nonce."&".$clientId."&".$clientSecretKey;
$signature = base64_encode($signatureCipher);
$data = array("TerminalID" => "9APY556261");
$data_string = json_encode($data);
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,$data_string);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type:application/json',
'Authorization:InterswitchAuth SUtJQTUyNTBERkY1NkU5MzM2OUM0RkRBRjMxQTQ3QTg1RkNDODYyRTRDOUU=',
'Signature:'.$signature,
'Nonce:'.$nonce,
'Timestamp:'.$timestamp,
'SignatureMethod:SHA512'
));
$result = curl_exec($ch);
echo curl_getinfo($ch) . '<br/>';
echo curl_errno($ch) . '<br/>';
echo curl_error($ch) . '<br/>';
var_dump($result);
}
But i am receiving following error
"The HTTP method is not supported for this resource", i tried http method POST but same error, i am new on API can someone please help me to solve this .

Answer 1

Use this instead, fill the following
In the variable
- $clientId
- $clientSecretKey
At the header
- TerminalID
<?php
$nonce=$randomNum=substr(str_shuffle("0123456789abcdefghijklmnopqrstvwxyz"), 0, 60);
$date = new DateTime();
$timestamp=$date->getTimestamp();
$httpMethod = "GET";
$clientId = "YOUR_OWN_ID";
$clientSecretKey = "YOUR_OWN_CLIENT_SECRET_KEY";
$resourceUrl='https://sandbox.interswitchng.com/api/v2/quickteller/categorys';
$resourceUrl = strtolower($resourceUrl);
$resourceUrl = str_replace('http://', 'https://', $resourceUrl);
$encodedUrl = urlencode($resourceUrl);
$transactionParams = "1";
$httpMethod = "GET";
$signatureCipher = $httpMethod . '&' . $encodedUrl . '&' . $timestamp . '&' . $nonce . '&' . $clientId . '&' . $clientSecretKey;
if (!empty($transactionParams) && is_array($transactionParams)) {
$parameters = implode("&", $transactionParams);
$signatureCipher = $signatureCipher . $parameters;
}
$signature = base64_encode(sha1($signatureCipher, true));
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$resourceUrl);
// curl_setopt($ch, CURLOPT_POST, 1);
// curl_setopt($ch, CURLOPT_POSTFIELDS,$vars); //Post Fields
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$headers = [
'Content-Type:application/json',
'Authorization:InterswitchAuth SUtJQTAzREM3RDY5NUREMzZFQURFNTQxNEE2Nzg1MUJCMUZFQ0Y5MUIxRjg=',
'Signature:'.$signature,
'Nonce:'.$nonce,
'Timestamp:'.$timestamp,
'SignatureMethod:SHA1',
'TerminalID:YOUR_ASSIGNED_TERMINAL_ID'
];
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$server_output = curl_exec ($ch);
curl_close ($ch);
echo $server_output;
?>
This worked for me, hope it help someone in future