forecastio_weather.php

<?php
function epoch_to_string_time($epoch,$timezone, $hour_only = false){
  $dt = new DateTime("@$epoch");  // convert UNIX timestamp to PHP DateTime
  $TimeStr = $dt->format('Y-m-d H:i:s'); // output = 2012-08-15 00:00:00 
  $TimeZoneNameFrom="UTC";
  if ($hour_only){
    $ret = date_create($TimeStr, new DateTimeZone($TimeZoneNameFrom))
                ->setTimezone(new DateTimeZone($timezone))->format("ga");
    return $ret;

  }else{
    $ret = date_create($TimeStr, new DateTimeZone($TimeZoneNameFrom))
                ->setTimezone(new DateTimeZone($timezone))->format("H:i");
    return $ret;

  }
}


include "api_key.php";
//put this in api_key.php or just put it here
//define('API_KEY', 'your key');

$payload = json_decode(file_get_contents('php://input'), true);
if(!$payload){
   print "<p>You will need your own server for this watchface.  If you would be interested in helping fund the cost of the forecast.io API, email me:  natejbean at gmail.com";
   die();
 }

$pebble_id = $_SERVER['HTTP_X_PEBBLE_ID'];
if ($pebble_id != MY_PEBBLE){ //my pebble
  for ($i = 1; $i <= 15; $i++){
    $new_ans = "99";
    if ($i == 5 || $i == 14)
    {
      $new_ans = "need";
     }elseif($i ==6 or $i ==15) {
      $new_ans = "api";

     }
    $response[$i] = $new_ans;
  }

  $response_string = "";
  foreach ($response as &$value) {
        $response_string = $response_string . $value . "|";
  }

  $response_output = array();
  $response_output[1] = $response_string;
  print json_encode($response_output);

}else{
  $mc = new Memcached();
  $mc->addServer("127.0.0.1", 11211);

  $payload[1] /= 10000;
  $payload[2] /= 10000;

  $mem_key = $payload[1] . "_" . $payload[2];
  $mem_result = $mc->get($mem_key);

  if($mem_result) {
    print json_encode($mem_result);
  }else{
    $url = "http://api.forecast.io/forecast/" . API_KEY . "/$payload[1],$payload[2]?units=$payload[3]&exclude=minutely,hourly,alerts";

    $forecast = json_decode(@file_get_contents($url));
    if(!$forecast) {
        die();
    }
    $response = array();
    $icons = array(
        'clear-day' => 0,
        'clear-night' => 1,
        'rain' => 2,
        'snow' => 3,
        'sleet' => 4,
        'wind' => 5,
        'fog' => 6,
        'cloudy' => 7,
        'partly-cloudy-day' => 8,
        'partly-cloudy-night' => 9
    );
    $icon_id = $icons[$forecast->currently->icon];
    $temp = round($forecast->currently->temperature);
    $temp_low = round($forecast->daily->data[0]->temperatureMin);
    $today_low_time = epoch_to_string_time($forecast->daily->data[0]->temperatureMinTime, $forecast->timezone, true);
    $temp_high = round($forecast->daily->data[0]->temperatureMax);
    $today_high_time = epoch_to_string_time($forecast->daily->data[0]->temperatureMaxTime, $forecast->timezone, true);
    $today_icon_id = $icons[$forecast->daily->data[0]->icon];
    $raw_sunrise_time = $forecast->daily->data[0]->sunriseTime;
    $sunrise = epoch_to_string_time($raw_sunrise_time,$forecast->timezone);

    $raw_sunset_time = $forecast->daily->data[0]->sunsetTime;
    $sunset = epoch_to_string_time($raw_sunset_time,$forecast->timezone);

    $tom_temp_low = round($forecast->daily->data[1]->temperatureMin);
    $tom_temp_high = round($forecast->daily->data[1]->temperatureMax);
    $tom_icon_id = $icons[$forecast->daily->data[1]->icon];

    $after_temp_low = round($forecast->daily->data[2]->temperatureMin);
    $after_temp_high = round($forecast->daily->data[2]->temperatureMax);
    $after_icon_id = $icons[$forecast->daily->data[2]->icon];


    $response[1] = $temp; 
    $response[2] = $icon_id; //new
    $response[3] = $temp_low;
    $response[4] = $temp_high;
    $response[5] = $sunrise;
    $response[6] = $sunset;
    $response[7] = $today_icon_id;
    $response[8] = $tom_temp_low;
    $response[9] = $tom_temp_high;
    $response[10] = $tom_icon_id;
    $response[11] = $after_temp_low;
    $response[12] = $after_temp_high;
    $response[13] = $after_icon_id;
    $response[14] = $today_low_time;
    $response[15] = $today_high_time;

    $response_string = "";
    foreach ($response as &$value) {
          $response_string = $response_string . $value . "|";
    }

    $response_output = array();
    $response_output[1] = $response_string;

    $mc->set($mem_key, $response_output,(14*60));
    print json_encode($response_output);

  }
}//pebble id check