sl-api.php

<?php
// Settings:
//  - METRO_ID is extracted from the sl.se url. This URL is for slussen departures
//     http://realtid.sl.se/?id=177&epslanguage=sv&WbSgnMdl=9192-U2x1c3NlbiAoU3RvY2tob2xtKQ%3d%3d-_--_-_-_
//     the METRO_ID is 9192
//
//  - DEPARTURE_NAME is the station the metro you want is going to as it appears on the above URL eg. 'Hässelby str.'
//  - DEPARTURE_NICKNAME just a friendly name to make th english tts api be able to pronounce your destination
//  - API_KEY is the api key, you can get one at http://www.trafiklab.se

$METRO_ID = ;
$DEPARTURE_NAME = '';
$DEPARTURE_NICKNAME = 'your destination';
$API_KEY = '';

header('Content-type: text/html; charset=utf-8');
$subway = json_decode(file_get_contents("https://api.trafiklab.se/sl/realtid/GetDepartures.json?siteId=$METRO_ID&key=$API_KEY"), true);

$metros = $subway['Departure']['Metros']['Metro'];

foreach($metros as $metro)
{
	preg_match('/\d+ min|Kort tåg|\d+:\d+/', $metro['DisplayRow1'], $matches);

	if($matches[0] == "Kort tåg") $say = "is departing now";
	else if(strstr($matches[0], "min")) $say = 'arrives in ' . str_replace('min', 'minutes', $matches[0]);
	else if(strstr($matches[0], ":")) $say = 'arrives at ' . $matches[0];
	else $say = $metro['DisplayRow1'];

	$split = explode(' ', $metro['DisplayRow1']);
	$tostation = $split[2];

	if($split[2] == $DEPARTURE_NAME)
	{
		$tostation = $DEPARTURE_NICKNAME;	
		echo "<audio src='http://tts-api.com/tts.mp3?q=" . urlencode('The metro to '. $tostation . ' ' . $say) . "' autoplay></audio>";
		break;
	}
}
?>