CURL is not executing first time properly - php

Question

I am using below given code for getting the flight results from Skyscanner API from CURL using ajax in cakephp 3
and I am executing it in loop if there is more than one location's flight searched by user , so the problem is its not always returning all the flight result everytime until I refresh the page and when I refresh another ajax request calls with the same parameter and than I am getting all the results, I dont know why its not fetching all the result in first time please suggest me the best solution for this ,Thanks all for the help
$apiParamsUrl = "http://www.skyscanneraffiliate.net/portal/en-GB/UK/LivePricing/TestHarness?apikey=*******&country=GB&currency=GBP&locale=en-GB&originplace=".$origin."&destinationplace=".$destination."&outbounddate=".$routes['date']['start_date']."&adults=".$routes['no_of_traveller']['no_of_traveller']."&children=0&infants=0&locationschema=iata&cabinclass=economy&groupPricing=true";
$apiParamsStr = parse_url($apiParamsUrl, PHP_URL_QUERY);
parse_str($apiParamsStr, $apiParamsArray);
$apiSessionUrl = 'http://partners.api.skyscanner.net/apiservices/pricing/v1.0';
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL, $apiSessionUrl);
curl_setopt($ch,CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded', 'Accept: application/json'));
curl_setopt($ch,CURLOPT_POST, count($apiParamsArray));
curl_setopt($ch,CURLOPT_POSTFIELDS, $apiParamsStr);
curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT, 0);
curl_setopt($ch,CURLOPT_VERBOSE, 1);
curl_setopt($ch,CURLOPT_HEADER, 1);
if(!curl_exec($ch)){
break;
}
$response = curl_exec($ch);
$header_size = curl_getinfo($ch,CURLINFO_HEADER_SIZE);
$header = substr($response, 0, $header_size);
$body = substr($response, $header_size);
curl_close($ch);
preg_match('~Location: ([^\s]+)~', $header, $matches);

Answer 1

Try following code, I've changed it a little bit:
$apiParamsUrl = "http://www.skyscanneraffiliate.net/portal/en-GB/UK/LivePricing/TestHarness?apikey=*******&country=GB&currency=GBP&locale=en-GB&originplace=" . $origin . "&destinationplace=" . $destination . "&outbounddate=" . $routes['date']['start_date'] . "&adults=" . $routes['no_of_traveller']['no_of_traveller'] . "&children=0&infants=0&locationschema=iata&cabinclass=economy&groupPricing=true";
$apiParamsStr = parse_url($apiParamsUrl, PHP_URL_QUERY);
parse_str($apiParamsStr, $apiParamsArray);
$apiSessionUrl = 'http://partners.api.skyscanner.net/apiservices/pricing/v1.0';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $apiSessionUrl);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded', 'Accept: application/json'));
curl_setopt($ch, CURLOPT_POST, true); // <-- changed
curl_setopt($ch, CURLOPT_POSTFIELDS, $apiParamsStr);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 0);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_HEADER, 0); // <-- changed
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // <-- added
$body = curl_exec($ch);
if (false === $body) {
break;
}
curl_close($ch);
var_export($body);