I am using the following code, but I am getting following response. Please help me out.

Response:

stdClass Object ( [success] => [message] => Invalid API Key [errorCode] => AG8004 [data] => )

Code:

$URL = "https://apiconnect.angelbroking.com/rest/secure/angelbroking/market/v1/quote/";

$ch = curl_init($URL);
$header = array();
$header[] = 'X-PrivateKey: '.$APIKEY_market;
$header[] = 'Accept: application/json, application/json';
$header[] = 'X-SourceID: WEB, WEB';
$header[] = 'X-ClientLocalIP: '.$_SERVER['REMOTE_ADDR'];
$header[] = 'X-ClientPublicIP: '.$_SERVER['REMOTE_ADDR'];
$header[] = 'X-MACAddress: MAC_ADDRESS';
$header[] = 'X-UserType: USER';
$header[] = 'Authorization: Bearer '.$JwtToken;
$header[] = 'Content-Type: application/json';

$str = json_encode(array("mode"=>"LTP","exchangeTokens"=>array("NFO"=>array("150200"))));
curl_setopt($ch, CURLOPT_HTTPHEADER,$header);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
// curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $str);
//curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
//curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
$rest = curl_exec($ch);
curl_close($ch);

curl_close($ch);
$result_arr = json_decode($rest);
print_r($result_arr);