Create a small script for calling , that call with a real phone number also have caller id with all functions for professional PHP

<?php
    $url = 'https://rest.nexmo.com/call/json?' . http_build_query(array(
        'api_key' => 'xxx',
        'api_secret' => 'yyyy',
        'to' => '',
        'from' => '',
        'answer_url' => 'http://example.com/answer',
        'event_url' => 'http://example.com/event'
    ));

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
?>