trafiken.php

<?php
$url = 'http://www.trafiken.nu/TrafikenServices/TraveltimeService.ashx?method=getTraveltime&region=VST&sectionId=3001';
$c = curl_init($url);
$options = array(
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => array('Content-type: application/json')
);
curl_setopt_array($c, $options);
$data = curl_exec($c);

function findSectionId($sectionId, $data) {
    preg_match_all("/({\"sectionId\":\"$sectionId\".*?})/", $data, $m, PREG_SET_ORDER);
    return $m;
}

$d = findSectionId(30001, $data);
foreach ($d as $row)
    echo $row[0];