PHP CURL POST query multipart/form-data

post.php

<?php

curl_setopt_array($curl, array(
  CURLOPT_URL => "API_ENDPOINT",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => array('file' => new CURLFile('path/to/file')),
  CURLOPT_HTTPHEADER => array(
    "Content-Type: multipart/form-data"
  ),
));




		$curl = curl_init($url);
		curl_setopt($curl, CURLOPT_HEADER, false);
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($curl, CURLOPT_HTTPHEADER,
		            array("Content-type: application/json"));
		curl_setopt($curl, CURLOPT_POST, true);
		curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));

		$json_response = curl_exec($curl);

		$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);

		if ( $status != 201 ) {
			die("Error: call to URL $url failed with status $status, response $json_response, curl_error " . curl_error($curl) . ", curl_errno " . curl_errno($curl));
		}

		curl_close($curl);

		return json_decode($json_response, true);