invoiceninja/app/Libraries/CurlUtils.php

<?php namespace App\Libraries;

use JonnyW\PhantomJs\Client;

class CurlUtils
{
    public static function post($url, $data, $headers = false)
    {
        return self::exec('POST', $url, $data, $headers);
    }

    public static function get($url, $headers = false)
    {
        return self::exec('GET', $url, null, $headers);
    }

    public static function exec($method, $url, $data, $headers = false)
    {
        $curl = curl_init();

        $opts = [
            CURLOPT_URL => $url,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_POST => $method,
            CURLOPT_HTTPHEADER => $headers ?: [],
        ];

        if ($data) {
            $opts[CURLOPT_POSTFIELDS] = $data;
        }

        curl_setopt_array($curl, $opts);
        $response = curl_exec($curl);

        if ($error = curl_error($curl)) {
            Utils::logError('CURL Error #' . curl_errno($curl) . ': ' . $error);
        }

        curl_close($curl);

        return $response;
    }

    public static function phantom($method, $url)
    {
        if ( ! $path = env('PHANTOMJS_BIN_PATH')) {
            return false;
        }

        $client = Client::getInstance();
        $client->getEngine()->setPath($path);

        $request = $client->getMessageFactory()->createRequest($url, $method);
        $response = $client->getMessageFactory()->createResponse();

        // Send the request
        $client->send($request, $response);
        
        if ($response->getStatus() === 200) {
            return $response->getContent();
        } else {
            //$response->getStatus();
            return false;
        }

    }
}