$curl = curl_init();
curl_setopt_array($curl, [
	CURLOPT_URL => "https://www.falconebiz.com/api/one",
	CURLOPT_RETURNTRANSFER => true,
	CURLOPT_TIMEOUT => 30,
	CURLOPT_CUSTOMREQUEST => "GET",
	CURLOPT_HTTPHEADER => [
		"Content-Type: application/json",
		"Authorization: YOUR-API-KEY",
		"Company: GST_NUMBER OR CIN",
		"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": {
        "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",
        "filings": {
            "last_agm": "2022-09-30",
            "last_bal_sheet": "2022-03-31"
        },
        "contact_details": {
            "email": "COMPANY_EMAIL",
            "address": "COMPANY_ADDRESS"
        },
        "directors": [
            {
                "din": "07182956",
                "director_name": "DEEPAK MANIKCHAND TIWARI",
                "designation": "Director",
                "appointment_date": "2015-08-06"
            },
            {
                "din": "07182974",
                "director_name": "KULBHUSHAN RAMNIWAS SHUKLA",
                "designation": "Director",
                "appointment_date": "2015-08-06"
            }
        ]
    },
    "gst_details": {
        "27AAWCS2373P1ZB": {
            "details": {
                "gstin": "27AAWCS2373P1ZB",
                "cin": "U93000MH2015PTC267169",
                "reg_date": "2017-07-01",
                "nature": "Supplier of Services",
                "legal_name": "SAMADHAAN CORPORATE SERVICES PRIVATE LIMITED",
                "status": "Active"
            },
            "filings": [
                {
                    "valid": "Y",
                    "mof": "ONLINE",
                    "dof": "09-02-2023",
                    "rtntype": "GSTR1",
                    "ret_prd": "012023",
                    "arn": "AA270123677981X",
                    "status": "Filed"
                },
                {
                    "valid": "Y",
                    "mof": "ONLINE",
                    "dof": "20-01-2023",
                    "rtntype": "GSTR3B",
                    "ret_prd": "122022",
                    "arn": "AC271222308244K",
                    "status": "Filed"
                }
            ]
        }
    }
}