gistfile1.php

<?php
    function extractHeaders($responseHeader) {
        $responseCookies = array();
        $responseHeaders = array();

        $responseHeader = str_replace("\r\n", "\n", $responseHeader);

        // explode and parse the headers
        foreach (explode("\n", $responseHeader) as $line) {
            $line = explode(':', $line, 2);

            if (count($line) != 2) {
                continue;
            }

            list($k, $v) = $line;

            // cookies \o/ nomnomnom
            if (strtolower(trim($k)) == 'set-cookie') {
                $cookiesplit = explode("=", $v);

                if (count($cookiesplit) < 2) {
                    continue;
                } else if (count($cookiesplit) > 2) {
                    // this is dirty as @&#%@ but let's roll with this for now
                    $cookiesplit = array($cookiesplit[0], reset(explode(" ", $cookiesplit[1])));
                }

                if (substr($cookiesplit[1], -1, 1) == ";") {
                    $cookiesplit[1] = substr($cookiesplit[1], 0, -1);
                }

                $responseCookies[trim($cookiesplit[0])] = trim($cookiesplit[1]);
            } else {
                $responseHeaders[trim($k)] = trim($v);
            }
        }

        return array($responseHeaders, $responseCookies); 
    }

    $myCookie = tempnam("/tmp", "myCookie");
	$myAgent = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";

	$myEmail = '[email protected]';
	$myPassword = 'yourpass';

	$url_login = "https://account.guildwars2.com/login";
	$url_data = "https://tradingpost-live.ncplatform.net/ws/search.json?ids=24341";

	$post_info = http_build_query(array('email' => $myEmail, 'password' => $myPassword));

	//Login 
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url_login);
	curl_setopt($ch, CURLOPT_COOKIEJAR, $myCookie);
	curl_setopt($ch, CURLOPT_USERAGENT, $myAgent);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_FAILONERROR, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $post_info);
	curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_REFERER, $url_login);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        "Accept-Language: en-us,en;q=0.5",
    ));
	$result = curl_exec($ch);
    $info   = curl_getinfo($ch);

    // retrieve header string based on reponse info
    $responseHeaders = trim(substr($result, 0, $info['header_size']));
    // retrieve body string based on reponse info
    $responseBody    = substr($result, $info['header_size']);
    $responseHeaders = explode("\r\n\r\n", $responseHeaders);

    $session_key = null;
    foreach ($responseHeaders as $responseHeader) {
        list($headers, $cookies) = extractHeaders($responseHeader);

        if (isset($cookies['s'])) {
            $session_key = $cookies['s'];
            break;
        }
    }

    if (!$session_key) {
        echo "failed to retrieve session_key :( \n"; 
        exit(1);
    }
 
	//Fetch data
	curl_setopt($ch, CURLOPT_URL, "{$url_data}");
	curl_setopt($ch, CURLOPT_COOKIEFILE, $myCookie);
	curl_setopt($ch, CURLOPT_USERAGENT, $myAgent);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
    curl_setopt($ch, CURLOPT_COOKIE, "s={$session_key}");
    curl_setopt($ch, CURLOPT_REFERER, $url_data);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
        "Accept-Language: en-us,en;q=0.5",
    ));
	curl_setopt($ch, CURLOPT_POST, 0);
	$result = curl_exec($ch);
	
	// Close curl and deal with the result
	curl_close($ch);
	json_decode($result, true);
	echo $result;
?>