PHP - Calculating Flight Paths

<?php

function extractItem(&$array, $itemKey)
{
	$data = array();
        
	foreach($array[$itemKey] as $item)
	{
              $Id = $item['Id'];  // get the id
              unset($item['Id']); // remove the id from item array
              $data[$Id] = $item; // set id as the key
	}

	unset($array[$itemKey]); // remove item from array.

	return $data; // return the new item array
} 


// get the api parametures from setup url
    $country_code = $_GET['country'];
    $originplace  = $_GET['strtplace'];
    $destination  = $_GET['endplace'];
    $start_date   = $_GET['startdate'];
    if(isset($_GET['enddate']) && $_GET['enddate']!=""){
    $end_date     = $_GET['enddate'];}
    $audult       = $_GET['audult'];
    if(isset($_GET['child']) && $_GET['child']!=""){
    $child        = $_GET['child'];}
    if(isset($_GET['infent']) && $_GET['infent']!=""){
    $infent       = $_GET['infent'];}
    $class        = $_GET['class'];
    
    if (!empty($_SERVER['HTTP_CLIENT_IP'])){
    $ip=$_SERVER['HTTP_CLIENT_IP'];}
    elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){
    $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];}
    else{$ip=$_SERVER['REMOTE_ADDR'];}
    $xml = simplexml_load_file("http://www.geoplugin.net/xml.gp?ip=".$ip);
    $ip_curency = $xml->geoplugin_currencyCode ;

    $query  = "&country=".$country_code;
    $query .= "&currency=".$ip_curency;
    $query .= "&locale=en-GB";
    $query .= "&originplace=".$originplace;
    $query .= "&destinationplace=".$destination;
    $query .= "&outbounddate=".$start_date;
    if(isset($end_date) && $end_date!=""){
    $query .= "&inbounddate=".$end_date;}
    $query .= "&adults=".$audult;
    if(isset($child) && $child!=""){
    $query .= "&children=".$child;}
    if(isset($infent) && $infent!=""){
    $query .= "&infants=".$infent;}
    $query .="&locationschema=iata";
    $query .="&cabinclass=".$class;
    $query .="&pagesize=10";

$apiParamsUrl = "http://partners.api.skyscanner.net/apiservices/pricing/v1.0/".$country_code."?apikey=SECRET".$query."";
$apiParamsStr = parse_url($apiParamsUrl, PHP_URL_QUERY); // get the query string parametures
parse_str($apiParamsStr, $apiParamsArray); // parse into an array

// the api url. First we need to request for a session
$apiSessionUrl = 'http://partners.api.skyscanner.net/apiservices/pricing/v1.0';

//open connection
$ch = curl_init();

//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL, $apiSessionUrl);
curl_setopt($ch,CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded', 'Accept: application/json')); // make api return json data
curl_setopt($ch,CURLOPT_POST, count($apiParamsArray)); // set how many fiels
curl_setopt($ch,CURLOPT_POSTFIELDS, $apiParamsStr);    // set the fields

// caputre the headers
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);

//execute post
$response = curl_exec($ch);

// get the headers
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$header = substr($response, 0, $header_size);
$body = substr($response, $header_size);

//close connection
curl_close($ch);

// get the api session url
preg_match('~Location: ([^\s]+)~', $header, $matches);
$apiSessionUrl = $matches[1];

// add on the api key for the session
$apiSessionUrl .= '?apiKey=' . $apiParamsArray['apikey'];

// get the json data
$data = file_get_contents($apiSessionUrl);

// decode the json
$array = json_decode($data, true);

// dump json array
printf('<pre>Poll Data  %s</pre>', print_r($array, true));

//Itineraries
		$Agents   = extractItem($array, 'Agents');   // get array of agents
//...

	foreach ($array['Itineraries'] as $Itineraries) {
        foreach($Itineraries['PricingOptions'] as $Option) {
             echo "<b> Agents: </b> ";

             // loop over agents for current priceOption
             foreach($Option['Agents'] as $agentId) {
                  echo $Agents[ $agentId ]['Name']. ', '; // echo the agent name that matches agentId.
             }
               
             echo " <br> price </b>",$Option['Price'] ,"<br />";
       }
	}
		
		//Legs
		foreach ($array['Legs'] as $Leg) {
		
			echo "<b> Departure </b> " .$Leg['Departure'], " <br> <b>Arrival </b>",$Leg['Arrival'] ,"<br />";
		}
		
		//Carriers
		foreach ($array['Carriers'] as $Carrier) {
		
				echo "<b> Name </b> " .$Carrier['Name'], " <br> Image </b>",$Carrier['ImageUrl'] ,"<br />";
		}
		
		//Places
		foreach ($array['Places'] as $Place) {
		
			echo "<b> Code </b> " .$Place['Code'], " <br> Name </b>",$Place['Name'] ,"<br />";
		}
?>

https://example.com?page=page1&controller=controller1&data1=123&data2=321

https://example.com/page1/controller1?data1=123&data2=321
https://example.com/page1/controller1&data1=123&data2=321

# Note that if a virtual ServerName is not found (i.e. IP 192.168.1.200), Apache defaults to first virtual host.
# Note that if ServerName is set to one of the virtual host ServerName's in the Second Section, it doesn't work (why?)

# Handle just example.com to http
<VirtualHost *:80>
    ServerName example.com
    ServerAlias *.example.com
    Redirect / https://www.example.com/
</VirtualHost>

# Handle just example.com without subdomains
<VirtualHost *:443>
    ServerName example.com
    # ServerAlias example.com
    SSLEngine on
    SSLCipherSuite SSLv3:TLSv1:+HIGH:!SSLv2:!MD5:!MEDIUM:!LOW:!EXP:!ADH:!eNULL:!aNULL
    SSLCertificateKeyFile /etc/pki/tls/private/example_key.pem
    SSLCertificateFile /etc/pki/tls/certs/example_startssl.crt
    SSLCertificateChainFile /etc/pki/tls/certs/sub.class1.server.ca.pem
    Redirect / https://www.example.com/
</VirtualHost>

<VirtualHost *:443>
    ServerName example.com
    ServerAlias *.example.com
    DocumentRoot /var/www/example/html

    SSLEngine on
    SSLCipherSuite SSLv3:TLSv1:+HIGH:!SSLv2:!MD5:!MEDIUM:!LOW:!EXP:!ADH:!eNULL:!aNULL
    SSLCertificateKeyFile /etc/pki/tls/private/example_key.pem
    SSLCertificateFile /etc/pki/tls/certs/example_startssl.crt
    SSLCertificateChainFile /etc/pki/tls/certs/sub.class1.server.ca.pem

    <Directory "/var/www/example/html">

        allow from all
        Options +Indexes

        <IfModule mod_rewrite.c>

            RewriteEngine On

            RewriteBase /

            # Are these lines necessary, or should I create a virtual host for http on port 80 instead?
            RewriteCond %{HTTPS} !=on
            RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [NE,R,L]

            ## If the request is for a valid directory, file, or link, don't do anything
            RewriteCond %{REQUEST_FILENAME} -d [OR]
            RewriteCond %{REQUEST_FILENAME} -f [OR]
            RewriteCond %{REQUEST_FILENAME} -l
            RewriteRule ^ - [L]

            #remove the trailing slash
            RewriteRule (.+)/$ $1

            # If you add this first rule to support views, be sure to remove the QSA flag from the second rule (maybe not required since the first rule has the L flag)
            #replace mypage/mycontroller with index.php?page=mypage&controller=mycontroller
            RewriteRule ^([^/]+)/([^/]+)/?$ index.php?page=$1&controller=$2 [L,QSA]
            #replace mypage with index.php?page=mypage
            RewriteRule ^([^/]+)/?$ index.php?page=$1 [L,QSA]

        </IfModule>
    </Directory>
</VirtualHost>