/inc/ajax/weather.php

<?php 

/**
 * Get the weather info
 * @uses http://api.openweathermap.org
 * @param void
 * @return array
 */
function weather(){
	date_default_timezone_set('America/New_York');

	$icons = array(
		'sky_is_clear'=> 'B',
		'few_clouds'=> 'H',
		'scattered_clouds'=> 'N',
		'overcast_clouds'=> 'N',
		'broken_clouds'=> 'Y',
		'shower_rain'=> 'R',
		'moderate_rain'=> 'R',
		'rain'=> '8',
		'thunderstorm'=> '6',
		'snow'=> 'W',
		'mist'=> 'Q',
		'fog'=> 'M',
		'heavy_intensity_rain'=>'8',
		'light_snow'=>'U',
		'light_rain'=>'R',
		'light_rain_and_snow'=>'V',
		'light_intensity_drizzle'=>'R',
		'drizzle'=>'R',
		'heavy_intensity_drizzle'=>'R',
		'very_heavy_rain'=>'8',
		'extreme_rain'=>'8',
		'freezing_rain'=>'8',
		'light_intensity_shower_rain'=>'R',
		'heavy_intensity_shower_rain'=>'8',
		'unknown'=>')'
	);
	$weather_replace = array( ' ' => '_' );
	$weather = $query = array();
	$weather_api = array(
		'url' => 'http://api.openweathermap.org/data/2.5/%s?%s',
		'base' => array(
			'mode' => 'xml',
			'units' => 'imperial',
			'APPID' => '4039c138d3a75fe829894408af96b78b'
		), // base query data
		'q' => array(
			array(
				'id' => '5128581',
			),
			array(
				'q' => 'manhattan,ny',
				'cnt' => '3'
			)
		), // query data
	);
	foreach($weather_api['q'] as $idx => $q )
		$query[] = http_build_query( $weather_api['base'] + $q );

	$mapping = array(
		'weather'        => 0,
		'forecast'       => 0,
		'forecast/daily' => 1
	);
	foreach($mapping as $str => $idx) {
		$url = sprintf($weather_api['url'], $str, $query[$idx]);
		$weatherxml = @file_get_contents($url);
		if ( $weatherxml && $weatherDataLater = new SimpleXMLElement($weatherxml)) {
			switch($str) {
				/** get the weather info */
				case 'weather':
					$forecast = $weatherDataLater->temperature->attributes();
					$status = $weatherDataLater->weather->attributes();
					$icon_index = strtolower(strtr($status->value, $weather_replace));

					if ( empty($icons[$icon_index])) {
						error_log("Missing Icon: $icon_index");
						$icon_index = 'unknown';
					}

					$weather['now_high']        = (int)$forecast->max;
					$weather['now_low']         = (int)$forecast->min;
					$weather['now_temperature'] = (int)$forecast->value;
					$weather['now_icon']        = sprintf(
						'<span class="weather-icon">%s</span>', $icons[$icon_index]
					);
				break;

				/** get the forecast info */
				case 'forecast':
					$forecast = $weatherDataLater->forecast;

					foreach($forecast->{'time'} as $time){
						$symbol = $time->symbol->attributes();
						$icon_index = strtolower(strtr($symbol->name, $weather_replace));

						if ( empty($icons[$icon_index])) {
							error_log("Missing Icon: $icon_index");
							$icon_index = 'unknown';
						}
						$temperature = $time->temperature->attributes();
						$weather['next_hour_icon'] = sprintf(
							'<span class="weather-icon">%s</span>', $icons[$icon_index]
						);
						$weather['next_hour_temperature'] = (int)$temperature->value;
						$first = false;
						if(!$first) break;
					}
				break;

				/** get the daily forecast info */
				default:
				$forecast = $weatherDataLater->forecast;

				$i=0;
				foreach($forecast->{'time'} as $time){
					$symbol = $time->symbol->attributes();
					$temperature = $time->temperature->attributes();
					$icon_index = strtolower(strtr($symbol->name, $weather_replace));

					if ( empty($icons[$icon_index])) {
						error_log("Missing Icon: $icon_index");
						$icon_index = 'unknown';
					}
					if ($i==1){
						$weather['tomorrow_icon'] = sprintf(
							'<span class="weather-icon">%s</span>', $icons[$icon_index]
						);
						$weather['tomorrow_temperature'] = (int)$temperature->day;
					} elseif ($i==2){
						$weather['next_icon'] = sprintf(
							'<span class="weather-icon">%s</span>', $icons[$icon_index]
						);
						$weather['next_temperature'] = (int)$temperature->day;
					}
					$i++;
				}
				$weather['date'] = date("M. j @ g:ia");
			}
		}
	}

	return $weather;
}

echo json_encode( weather() );
?>