PHP: Use Yahoo's Weather API, cURL, and SimpleXML to get current weather conditions given a WOEID.

weathergist.php

<?php
  /*
  * This gist utilizes Yahoo's Weather API to snag the current
  * weather conditions for any country given it's WOEID.
  *
  * - by Carwin Young
  */

  /* Set up some location WOEIDs */
  $Cambodia = 1020985; /* Phnom Pneh */
  $Jakarta = 1047378;  /* Jakarta */
  $Bali = 1047372;     /* Denpasar */
  $Russia = 2123260;   /* St. Petersburg */

  /* Use cURL to query the API for some XML */
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, 'http://weather.yahooapis.com/forecastrss?w='.$Jakarta.'&u=f');
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  $weather_rss = curl_exec($ch);
  curl_close($ch);

  /* Create an object of the XML returned */
  $weather = new SimpleXMLElement($weather_rss);
  
  /* 
  * Since I don't want to figure out an image system, I'll use Weather.com's (what Yahoo does)
  * by pulling the image directly out of the returned API request. This could be done better.
  */
  $weather_contents = $weather->channel->item->description;
  preg_match_all('/<img[^>]+>/i',$weather_contents, $img);
  $weather_img = $img[0][0];

  /* Get clean parts */
  $weather_unit = $weather->channel->xpath('yweather:units');
  $weather_cond = $weather->channel->item->xpath('yweather:condition');
  $weather_wind = $weather->channel->xpath('yweather:wind');

  /* Function to convert Wind Direction from given degree units into Cardinal units */
  function cardinalize($degree) {
    if($degree == 0) $direction = '';
    if($degree >= 348.75 && $degree <= 11.25) $direction = 'N';
    if($degree > 11.25 && $degree <= 33.75) $direction = 'NNE';
    if($degree > 33.75 && $degree <= 56.25) $direction = 'NE';
    if($degree > 56.25 && $degree <= 78.75) $direction = 'ENE';
    if($degree > 78.75 && $degree <= 101.25) $direction = 'E';
    if($degree > 101.25 && $degree <= 123.75) $direction = 'ESE';
    if($degree > 123.75 && $degree <= 146.25) $direction = 'SE';
    if($degree > 146.25 && $degree <= 168.75) $direction = 'SSE';
    if($degree > 168.75 && $degree <= 191.25) $direction = 'S';
    if($degree > 191.25 && $degree <= 213.75) $direction = 'SSW';
    if($degree > 213.75 && $degree <= 236.25) $direction = 'SW';
    if($degree > 236.25 && $degree <= 258.75) $direction = 'WSW';
    if($degree > 258.75 && $degree <= 281.25) $direction = 'W';
    if($degree > 281.25 && $degree <= 303.75) $direction = 'WNW';
    if($degree > 303.75 && $degree <= 326.25) $direction = 'NW';
    if($degree > 326.25 && $degree < 348.75) $direction = 'NNW';
    return $direction;
  }
?>

<style>
  .left{float: left;overflow:hidden;}.right{float:right;}
  .weather_block{overflow:hidden;width: 220px;font-family: Arial, sans-serif; color: #6a6a6a;}
  .temp{font-weight:bold;font-size:17px;margin-right: 10px;}
  .wcond{font-size:11px;} 
</style>
<div class="weather_block">
  <div class="left">
    <?php print $weather_img; ?>
  </div>
  <div class="left">
    <div class="temp left">
      NOW<br /><?php print $weather_cond[0]->attributes()->temp; ?>&deg; <?php print $weather_unit[0]->attributes()->temperature; ?>
    </div>
    <div class="right">
      <div class="wcond">
        <?php print $weather_cond[0]->attributes()->text; ?><br /><br />
        Wind: <?php print cardinalize($weather_wind[0]->attributes()->direction); ?>
        <?php 
          if($weather_wind[0]->attributes()->speed != 0){
            print $weather_wind[0]->attributes()->speed.' '.$weather_unit[0]->attributes()->speed; 
          }else{
            print 'none';
          }
          ?>
      </div>
    </div>
  </div>
</div>

weathergist_as_function.php

<?php
  function get_weather() {

    /* Set up some location WOEIDs */
    $cambodia = 1020985; /* Phnom Pneh */
    $jakarta = 1047378;  /* Jakarta */
    $bali = 1047372;     /* Denpasar */
    $russia = 2123260;   /* St. Petersburg */
    $south_korea = 1132599;    /* Seoul */

    /* Check the current URL, grab a Place, check it against set up WOEIDs, assign it */
    $url = $_SERVER['REQUEST_URI'];   // e.g.:  destination/jakarta
    $url_parts = explode('/', $url);  // $url_parts = array( [0] => destination, [1] => jakarta )
    $url_place = $url_parts[2];       // $url_place = jakarta
    if($url_place == 'cambodia') $woeid = $cambodia;
    if($url_place == 'jakarta') $woeid = $jakarta;
    if($url_place == 'bali') $woeid = $bali;
    if($url_place == 'russia') $woeid = $russia;
    if($url_place == 'south-korea') $woeid = $south_korea;

    /* Use cURL to query the API for some XML */
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'http://weather.yahooapis.com/forecastrss?w='.$woeid.'&u=f');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $weather_rss = curl_exec($ch);
    curl_close($ch);   

    /* Create an object of the XML returned */
    $weather = new SimpleXMLElement($weather_rss);

    /* 
    * Since I don't want to figure out an image system, I'll use Weather.com's (what Yahoo does)
    * by pulling the image directly out of the returned API request. This could be done better.
    */
    $weather_contents = $weather->channel->item->description;
    preg_match_all('/<img[^>]+>/i',$weather_contents, $img);
    $weather_img = $img[0][0];

    /* Get cleaner parts */
    $weather_unit = $weather->channel->xpath('yweather:units');
    $weather_cond = $weather->channel->item->xpath('yweather:condition');
    $weather_wind = $weather->channel->xpath('yweather:wind');
  
    /* Make this function spit out some HTML */
    $output = '<div class="weather_block"><div class="left">';
    $output .= $weather_img;
    $output .= '</div><div class="left"><div class="temp left">Now<br />';
    $output .= $weather_cond[0]->attributes()->temp.'&deg;'.$weather_unit[0]->attributes()->temperature;
    $output .= '</div><div class="left" style="padding-top: 10px;"><div class="wcond">';
    $output .= $weather_cond[0]->attributes()->text;
    $output .= '<br />Wind: ';
    $output .= cardinalize($weather_wind[0]->attributes()->direction); 
    if($weather_wind[0]->attributes()->speed != 0) {
      $output .= ' '.$weather_wind[0]->attributes()->speed.$weather_unit[0]->attributes()->speed;
    }else{
      $output .= ' none';
    }
    $output .= '</div></div></div></div>';
    return $output;
  }
  
  /* Function to convert Wind Direction from given degree units into Cardinal units */
  function cardinalize($degree) {
    if($degree == 0) $direction = '';
    if($degree >= 348.75 && $degree <= 11.25) $direction = 'N';
    if($degree > 11.25 && $degree <= 33.75) $direction = 'NNE';
    if($degree > 33.75 && $degree <= 56.25) $direction = 'NE';
    if($degree > 56.25 && $degree <= 78.75) $direction = 'ENE';
    if($degree > 78.75 && $degree <= 101.25) $direction = 'E';
    if($degree > 101.25 && $degree <= 123.75) $direction = 'ESE';
    if($degree > 123.75 && $degree <= 146.25) $direction = 'SE';
    if($degree > 146.25 && $degree <= 168.75) $direction = 'SSE';
    if($degree > 168.75 && $degree <= 191.25) $direction = 'S';
    if($degree > 191.25 && $degree <= 213.75) $direction = 'SSW';
    if($degree > 213.75 && $degree <= 236.25) $direction = 'SW';
    if($degree > 236.25 && $degree <= 258.75) $direction = 'WSW';
    if($degree > 258.75 && $degree <= 281.25) $direction = 'W';
    if($degree > 281.25 && $degree <= 303.75) $direction = 'WNW';
    if($degree > 303.75 && $degree <= 326.25) $direction = 'NW';
    if($degree > 326.25 && $degree < 348.75) $direction = 'NNW';
    return $direction;
  }
?>

Would this be OK to use on my website to tie into an Android app? :)