$curl = curl_init();
curl_setopt_array($curl, [
	CURLOPT_URL => "https://www.falconebiz.com/api/verify_company",
	CURLOPT_RETURNTRANSFER => true,
	CURLOPT_TIMEOUT => 30,
	CURLOPT_CUSTOMREQUEST => "GET",
	CURLOPT_HTTPHEADER => [
		"Content-Type: application/json",
		"Authorization: YOUR-API-KEY",
		"Company: CIN OR LLPIN",
		"Domain: YOUR DOMAIN"
	],
]);

$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if($err) {
	echo "cURL Error #:" . $err;
}else{
	echo $response;
}

[company_details] => Array
    (
        [cin] => U93000MH2015PTC267169
        [company_name] => SAMADHAAN CORPORATE SERVICES PRIVATE LIMITED
        [incorporation_date] => 2015-08-06
        [auth_capital] => 100000
        [paid_capital] => 100000
        [pincode] => 400601
        [category] => Company limited by Shares
        [class] => Private
        [roc] => RoC-Mumbai
        [statusname] => Active
        [subcategory] => Non-govt company
        [state] => Maharashtra
        [district] => Thane
        [activity] => (Other service activities) Other service activities
        [registration_no] => 267169
        [list_status] => Unlisted
        [email] => COMPANY-EMAIL
        [address] => COMPANY-ADDRESS
    )