How to get data from third party api with PHP cURL? - php

Question

I want to fetch json data from one API but I am getting following error
HTTP/1.1 500 Internal Server Error
Cache-Control: no-cache
Pragma: no-cache
Content-Type: application/json; charset=utf-8
Expires: -1
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Wed, 27 Mar 2019 06:07:40 GMT
Content-Length: 36
{"Message":"An error has occurred."}
Its works with postman.Is there any syntax error while sending request?
This is my code
<?php
// Initiate curl
//$post = "NoofAdult=1&NoofChild=1&NoofInfant=1&FromAirportCode=AMD&ToAirportCode=BOM&DepartureDate=21/06/2019&ReturnDate&TripType=1&FlightClass=Y&SpecialFare=0&AirlineType=A";
$postData = array(
'NoofAdult' => '1',
'NoofChild' => '1',
'NoofInfant' => '1',
'FromAirportCode' => 'AMD',
'ToAirportCode' => 'BOM',
'DepartureDate' => '21/06/2019',
'ReturnDate' => '',
'TripType' => '1',
'FlightClass' => 'Y',
'SpecialFare' => '0',
'AirlineType' => 'A'
);
$header_data = array(
"Content-Type: application/json",
"Accept-Encoding: gzip, deflate",
"InterfaceCode:1",
"InterfaceAuthKey:1",
"AgentCode:",
"Password:"
);
$ch = curl_init();
$curlOpts = array(
CURLOPT_URL => 'http://stagingv2.flightmyweb.com/API/FlightAvailibility',
//CURLOPT_URL => 'http://localhost/akshay/sampleapi.php',
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => $header_data,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $postData,
CURLOPT_HEADER => 1,
);
curl_setopt_array($ch, $curlOpts);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Length: 0'));
$answer = curl_exec($ch);
// If there was an error, show it
if (curl_error($ch)) {
die(curl_error($ch));
}
curl_close($ch);
echo '<pre>';
print_r($answer);
echo '</pre>';
// Will dump a beauty json :3
//var_dump(json_decode($result, true));
//echo json_encode($outp);
?>
I need json output: