<?php
$endpoint = "https://api.ikhokha.com/public-api/v1/api/payment";
$appID = "IKFLESZTKFM4HWWS76131L8HK9BYF96P";
$appSecret = "gfoQTvXRXuzq6ArPHUS2CBFxtHtH1bxM";
$requestBody = [
    "entityID" => "4",
    "externalEntityID" => "4",
    "amount" => 1000,
    "currency" => "ZAR",
    "requesterUrl" => "https://beta.4wdcsa.co.za/requester",
    "description" => "Test Description 1",
    "paymentReference" => "4",
    "mode" => "sandbox",
    "externalTransactionID" => "5",
    "urls" => [
        "callbackUrl" => "https://beta.4wdcsa.co.za/callback",
        "successPageUrl" => "https://beta.4wdcsa.co.za/success",
        "failurePageUrl" => "https://beta.4wdcsa.co.za/failure",
        "cancelUrl" => "https://beta.4wdcsa.co.za/cancel"
    ]
];
function escapeString($str) {
    $escaped = preg_replace(['/[\\"\'\"]/u', '/\x00/'], ['\\\\$0', '\\0'], (string)$str);
    $cleaned = str_replace('\/', '/', $escaped);
    return $cleaned;
}
function createPayloadToSign($urlPath, $body) {
    $parsedUrl = parse_url($urlPath);
    $basePath =  $parsedUrl['path'];
    if (!$basePath) {
        throw new Exception("No path present in the URL");
    }
    $payload = $basePath . $body;
    $escapedPayloadString = escapeString($payload);
    return $escapedPayloadString;
}
function generateSignature($payloadToSign, $secret) {
    return hash_hmac('sha256', $payloadToSign, $secret);
}
$stringifiedBody = json_encode($requestBody);
$payloadToSign = createPayloadToSign($endpoint, $stringifiedBody);
$ikSign = generateSignature($payloadToSign, $appSecret);
// Initialize cURL session
$ch = curl_init($endpoint);
// Set cURL options
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $stringifiedBody);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    "Content-Type: application/json",
    "IK-APPID: $appID",
    "IK-SIGN: $ikSign"
]);
// Execute cURL session
$response = curl_exec($ch);
curl_close($ch);
// Decode and output the response
$responseData = json_decode($response, true);
echo print_r($responseData, true);
?>