Send file with POST request via CURL PHP 7

PHP CURL POST REQUEST WITH FILE

<?php
// You have to enable PHP CURL extension

//Initialise the cURL var
$ch = curl_init();

// Path of the file
$file_uri = realpath('cat.zip');

// Creates a CURLFile object, used to upload a file with CURLOPT_POSTFIELDS.
$file_to_send = curl_file_create($file_uri, '', '');

// URL to send POST request
$url = "https://hooks.zapier.com/hooks/catch/4797032/788klv/";

// Get the response from cURL
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);


// Set the Url
curl_setopt($ch, CURLOPT_URL, $url);

// Create a POST array with the file in it
$postData = array(
    'file' => $file_to_send,
    // add any field and value to send
);

// Set POST fields
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);


// Receive server response ...
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// Execute the request
$response = curl_exec($ch);

// Close connection
curl_close ($ch);

// Output server response
echo $server_output;