Look at example curl request!

$filePath - is absolute path to commercial invoice as pdf file;

public function getCurlRequest($filePath): array
    $ch = curl_init();

    $postFields = [
        "file" => new CURLFile($filePath)
    ];

    curl_setopt_array($ch, [
        CURLOPT_URL => "https://www.kwadro.com.ua/pdf/load",
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_POST => true,
        CURLOPT_POSTFIELDS => $postFields,
        CURLOPT_SSL_VERIFYHOST => 0,
        CURLOPT_SSL_VERIFYPEER => 0,

    ]);

    $response = curl_exec($ch);
    if (curl_errno($ch)) {
        $res = ["message" => "cURL error: " . curl_error($ch), "status" => "error"];
    } else {
        $res = json_decode($response, true);
    }
    curl_close($ch);
    return $res;
};

Response contains next information: invoiceDate, invoiceNumber, invoiceTotal, invoiceFreight

For activation could you send your server IP Address to kwadro2010@gmail.com

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