Upload file using PHP curl to API

uplaodfileusingcurl.php

<?php


function getCurlValue($filepath)
{

  $contentType =  mime_content_type($filepath);
  $filename =  basename($filepath);

    // PHP 5.5 introduced a CurlFile object that deprecates the old @filename syntax
    // See: https://wiki.php.net/rfc/curl-file-upload
    if (function_exists('curl_file_create')) {
        return curl_file_create($filepath, $contentType, $filename);
    }

    // Use the old style if using an older version of PHP
    $value = "@{$filepath};filename=" . $filename;
    if ($contentType) {
        $value .= ';type=' . $contentType;
    }

    return $value;
}


$filepath  = realpath ("de2c5d33-958b-4ce2-8398-e14e5dc9098b.zip");
$cfile = getCurlValue($filepath);


  $POST_DATA = array(
      'file' =>  $cfile
  );

  
  $arr =  array(
    // "Content-Type: application/zip; charset=utf-8",
    "API-Key: API_KEYS_GOES_HERE_IF_REQUIRED"
  );

  $curl = curl_init();
  curl_setopt($curl, CURLOPT_URL, 'https://your_domain.com/');
  curl_setopt($curl, CURLOPT_TIMEOUT, 30);
  curl_setopt($curl, CURLOPT_POST, 1);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);

  curl_setopt($curl, CURLOPT_POSTFIELDS, $POST_DATA);

   curl_setopt($curl, CURLOPT_HTTPHEADER, $arr);
   $response = curl_exec($curl);
   if($errno = curl_errno($curl)) {
     echo  $error_message = curl_strerror($errno);
      echo "cURL error ({$errno}):\n {$error_message}";
   } else {
      echo "<h2>File Uploaded</h2>";
   }
    curl_close ($curl);