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230 lines
15 KiB
PHP
230 lines
15 KiB
PHP
<?php
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/*
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File Name: getweather.php
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Author: Gary White
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Original version: May 12, 2005
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Last modified: August 7, 2008
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Copyright (C) 2004-2008 Gary White
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License in the included gpl.txt file for
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details.
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See http://apptools.com/phptools/xml/weather/ for usage information
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See http://weather.gov/data/current_obs/
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Also see
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http://weather.gov/alerts/
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http://weather.gov/forecasts/xml/
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Complete list of Weather stations available at
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http://weather.gov/data/current_obs/index.xml
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*/
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class GetWeather {
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// Initialize some variables
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static $itemdata;
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static $itemname;
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static $wxdata;
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function get($rpt) {
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// URL for the XML file
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$xmlurl="http://www.weather.gov/data/current_obs/$rpt.xml";
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// Base url for the icons
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$imgpath="http://weather.gov/weather/images/fcicons";
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self::$itemdata="";
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self::$itemname="";
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self::$wxdata=array();
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$icons=self::defineIcons();
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$icon="";
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$data="";
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$report="";
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// create a new CURL resource
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if($ch = curl_init()) {
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// set URL and other appropriate options
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curl_setopt($ch, CURLOPT_URL, $xmlurl);
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curl_setopt($ch, CURLOPT_HEADER, trus);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
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// grab URL and pass it to the browser
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$data=curl_exec($ch);
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$r=curl_getinfo($ch); //,CURLINFO_HTTP_CODE);
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// close CURL resource, and free up system resources
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curl_close($ch);
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// Create an XML parser
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$xml_parser = xml_parser_create();
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// Use case-folding so we are sure to find the tag in $map_array
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// This will force all tags to upper case so we don't have to worry
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// about matching the case of the original in our tests.
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xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, true);
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// Assign the element starting and ending event handlers
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xml_set_element_handler($xml_parser, array(self,"startElement"), array(self,"endElement"));
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// Assign a function to handle character data
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xml_set_character_data_handler($xml_parser, array(self,"characterData"));
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// Parse the file. This will place the data into an associative
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// array assigned to the self::$wxdata variable
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xml_parse($xml_parser,$data,true);
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// Free the parser object
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xml_parser_free($xml_parser);
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// The OBSERVATION_TIME field of the returned XML will be in the
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// format "Last Updated on May 18, 8:53 am CDT"
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// We're going to change the format a bit.
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// Strip out the "Last Updated on " portion of the date/time
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// so we can display that separately in our tabular output
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$datetime=str_replace("Last Updated on ","",self::$wxdata['OBSERVATION_TIME']);
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// We now have the format as "May 18, 8:53 am CDT"
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// Now, get the time zone. It will be everything from
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// the last space character to the end of the string.
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$z=strrchr($datetime," ");
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// Get the current year
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$year=date("Y");
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// Now, we stuff the year into the string, following the comma.
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$datetime=str_replace(",",", $year",$datetime);
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// This does leave a small potential issue where, if you get a
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// report between midnight and 1 a.m. on January 1, or the server
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// is in a significantly different time zone than the report it
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// could be as late as 4 a.m. the year will be wrong because the
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// report will be from the previous year. I suppose it would be
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// possible to correct for that, but for that little bit, I'm
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// not going to worry about it.
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// Now, strip out the time zone
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$datetime=str_replace($z,"",$datetime);
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// Format the date and time the way we want it and add
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// back the time zone
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$datetime=date("l F j, Y g:i A",strtotime($datetime)).$z;
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self::$wxdata['OBSERVATION_TIME']=$datetime;
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// Get the WEATHER element
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$wx=trim(self::$wxdata['WEATHER']);
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// Now, get the icon to match the weather
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foreach($icons as $k=>$i){
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$a=explode(" | ",$i);
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if(is_numeric(array_search($wx,$a))){
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self::$wxdata['ICON']="$imgpath/$k.jpg";
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break;
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}
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}
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// Replace any null elements with "Not available"
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foreach(array_keys(self::$wxdata) as $key){
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self::$wxdata[$key]=self::$wxdata[$key]=="NULL"?"Not available":self::$wxdata[$key];
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}
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// If we got humidity
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if(is_numeric(self::$wxdata['RELATIVE_HUMIDITY']))
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// Append a percent sign
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self::$wxdata['RELATIVE_HUMIDITY'].="%";
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// Do some formatting to make the output a little friendlier
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if(self::$wxdata['VISIBILITY_MI']=="NA")
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self::$wxdata['VISIBILITY']="Not available";
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if(self::$wxdata['VISIBILITY']!="Not available")
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self::$wxdata['VISIBILITY']=(1*self::$wxdata['VISIBILITY_MI'])." miles";
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// If we got wind data
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if(is_numeric(self::$wxdata['WIND_MPH'])){
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// We're going to output wind data as both MPH from a cardinal direction
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// and as Knots from a direction in degrees
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// Calculate the value for Knots
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self::$wxdata['WIND_KNOTS']=self::$wxdata['WIND_MPH']/1.15;
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// Format the output
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$wind=sprintf("From the %s at %d mph (%03.0f° at %d knots)",self::$wxdata['WIND_DIR'],self::$wxdata['WIND_MPH'],self::$wxdata['WIND_DEGREES'],self::$wxdata['WIND_KNOTS']);
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// If we got a value for wind gusts
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if(is_numeric(self::$wxdata['WIND_GUST_MPH']) && self::$wxdata['WIND_GUST_MPH']>0){
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// add it into the wind string
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$wind=str_replace("mph","gusting to ".self::$wxdata['WIND_GUST_MPH']." mph<br>", $wind);
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$knots=sprintf("%d",self::$wxdata['WIND_GUST_MPH']/1.15);
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$wind=str_replace("knots","gusting to $knots knots",$wind);
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}
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} else {
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// Otherwise, if wind is zero, we'll show "Calm"
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$wind=self::$wxdata['WIND_MPH']=="Not available"?"Not available":"Calm";
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} // Done with wind
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self::$wxdata['WIND_STRING']=$wind;
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} // Done getting and formatting the data
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return self::$wxdata;
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}
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function startElement($parser, $name, $attrs) {
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self::$itemname=$name;
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self::$itemdata="";
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}
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function endElement($parser, $name) {
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self::$wxdata[self::$itemname]=self::$itemdata;
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self::$itemdata="";
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}
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function characterData($parser, $data) {
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self::$itemdata.=$data;
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}
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function defineIcons(){
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// See http://weather.gov/data/current_obs/weather.php for source data for this function
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$retVal['bkn']="Mostly Cloudy | Mostly Cloudy with Haze | Mostly Cloudy and Breezy";
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$retVal['skc']="Fair | Clear | Fair with Haze | Clear with Haze | Fair and Breezy | Clear and Breezy";
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$retVal['few']="A Few Clouds | A Few Clouds with Haze | A Few Clouds and Breezy";
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$retVal['sct']="Partly Cloudy | Party Cloudy with Haze | Partly Cloudy and Breezy";
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$retVal['ovc']="Overcast | Overcast with Haze | Overcast and Breezy";
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$retVal['nfg']="Fog/Mist | Fog | Freezing Fog | Shallow Fog | Partial Fog | Patches of Fog | Fog in Vicinity | Freezing Fog in Vicinity | Shallow Fog in Vicinity | Partial Fog in Vicinity | Patches of Fog in Vicinity | Showers in Vicinity Fog | Light Freezing Fog | Heavy Freezing Fog";
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$retVal['smoke']="Smoke";
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$retVal['fzra']="Freezing Rain | Freezing Drizzle | Light Freezing Rain | Light Freezing Drizzle | Heavy Freezing Rain | Heavy Freezing Drizzle | Freezing Rain in Vicinity | Freezing Drizzle in Vicinity";
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$retVal['ip']="Ice Pellets | Light Ice Pellets | Heavy Ice Pellets | Ice Pellets in Vicinity | Showers Ice Pellets | Thunderstorm Ice Pellets | Ice Crystals | Hail | Small Hail/Snow Pellets | Light Small Hail/Snow Pellets | Heavy Small Hail/Snow Pellets | Showers Hail | Hail Showers";
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$retVal['mix']="Freezing Rain Snow | Light Freezing Rain Snow | Heavy Freezing Rain Snow | Freezing Drizzle Snow | Light Freezing Drizzle Snow | Heavy Freezing Drizzle Snow | Snow Freezing Rain| Light Snow Freezing Rain | Heavy Snow Freezing Rain | Snow Freezing Drizzle | Light Snow Freezing Drizzle | Heavy Snow Freezing Drizzle";
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$retVal['raip']="Rain Ice Pellets | Light Rain Ice Pellets | Heavy Rain Ice Pellets | Drizzle Ice Pellets | Light Drizzle Ice Pellets | Heavy Drizzle Ice Pellets | Ice Pellets Rain | Light Ice Pellets Rain | Heavy Ice Pellets Rain | Ice Pellets Drizzle | Light Ice Pellets Drizzle | Heavy Ice Pellets Drizzle";
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$retVal['rasn']="Rain Snow | Light Rain Snow | Heavy Rain Snow | Snow Rain | Light Snow Rain | Heavy Snow Rain | Drizzle Snow | Light Drizzle Snow | Heavy Drizzle Snow | Snow Drizzle | Light Snow Drizzle | Heavy Snow Drizzle";
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$retVal['shra']="Rain Showers | Light Rain Showers | Heavy Rain Showers | Rain Showers in Vicinity | Light Showers Rain | Heavy Showers Rain | Showers Rain | Showers Rain in Vicinity | Rain Showers Fog/Mist | Light Rain Showers Fog/Mist | Heavy Rain Showers Fog/Mist | Rain Showers in Vicinity Fog/Mist | Light Showers Rain Fog/Mist | Heavy Showers Rain Fog/Mist | Showers Rain Fog/Mist | Showers Rain in Vicinity Fog/Mist";
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$retVal['tsra']="Thunderstorm | Light Thunderstorm Rain | Heavy Thunderstorm Rain | Thunderstorm Rain Fog/Mist | Light Thunderstorm Rain Fog/Mist | Heavy Thunderstorm Rain Fog/Mist | Thunderstorm Showers in Vicinity | | Light Thunderstorm Rain Haze | Heavy Thunderstorm Rain Haze | Thunderstorm Fog | Light Thunderstorm Rain Fog | Heavy Thunderstorm Rain Fog | Thunderstorm Light Rain | Thunderstorm Heavy Rain | Thunderstorm Rain Fog/Mist | Thunderstorm Light Rain Fog/Mist | Thunderstorm Heavy Rain Fog/Mist | Thunderstorm in Vicinity Fog/Mist | Thunderstorm Showers in Vicinity | Thunderstorm in Vicinity | Thunderstorm in Vicinity Haze | Thunderstorm Haze in Vicinity | Thunderstorm Light Rain Haze | Thunderstorm Heavy Rain Haze | Thunderstorm Fog | Thunderstorm Light Rain Fog | Thunderstorm Heavy Rain Fog | Thunderstorm Hail | Light Thunderstorm Rain Hail | Heavy Thunderstorm Rain Hail | Thunderstorm Rain Hail Fog/Mist | Light Thunderstorm Rain Hail Fog/Mist | Heavy Thunderstorm Rain Hail Fog/Mist | Thunderstorm Showers in Vicinity Hail | | Light Thunderstorm Rain Hail Haze | Heavy Thunderstorm Rain Hail Haze | Thunderstorm Hail Fog | Light Thunderstorm Rain Hail Fog | Heavy Thunderstorm Rain Hail Fog | Thunderstorm Light Rain Hail | Thunderstorm Heavy Rain Hail | Thunderstorm Rain Hail Fog/Mist | Thunderstorm Light Rain Hail Fog/Mist | Thunderstorm Heavy Rain Hail Fog/Mist | Thunderstorm in Vicinity Hail Fog/Mist | Thunderstorm Showers in Vicinity Hail | Thunderstorm in Vicinity Hail | Thunderstorm in Vicinity Hail Haze | Thunderstorm Haze in Vicinity Hail | Thunderstorm Light Rain Hail Haze | Thunderstorm Heavy Rain Hail Haze | Thunderstorm Hail Fog | Thunderstorm Light Rain Hail Fog | Thunderstorm Heavy Rain Hail Fog | Thunderstorm Small Hail/Snow Pellets | Thunderstorm Rain Small Hail/Snow Pellets | Light Thunderstorm Rain Small Hail/Snow Pellets | Heavy Thunderstorm Rain Small Hail/Snow Pellets";
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$retVal['sn']="Snow | Light Snow | Heavy Snow | Snow Showers | Light Snow Showers | Heavy Snow Showers | Showers Snow | Light Showers Snow | Heavy Showers Snow | Snow Fog/Mist | Light Snow Fog/Mist | Heavy Snow Fog/Mist | Snow Showers Fog/Mist | Light Snow Showers Fog/Mist | Heavy Snow Showers Fog/Mist | Showers Snow Fog/Mist | Light Showers Snow Fog/Mist | Heavy Showers Snow Fog/Mist | Snow Fog | Light Snow Fog | Heavy Snow Fog | Snow Showers Fog | Light Snow Showers Fog | Heavy Snow Showers Fog | Showers Snow Fog | Light Showers Snow Fog | Heavy Showers Snow Fog | Showers in Vicinity Snow | Snow Showers in Vicinity | Snow Showers in Vicinity Fog/Mist | Snow Showers in Vicinity Fog | Low Drifting Snow | Blowing Snow | Snow Low Drifting Snow | Snow Blowing Snow | Light Snow Low Drifting Snow | Light Snow Blowing Snow | Heavy Snow Low Drifting Snow | Heavy Snow Blowing Snow | Thunderstorm Snow | Light Thunderstorm Snow | Heavy Thunderstorm Snow | Snow Grains | Light Snow Grains | Heavy Snow Grains | Heavy Blowing Snow | Blowing Snow in Vicinity";
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$retVal['wind']="Windy | Fair and Windy | A Few Clouds and Windy | Partly Cloudy and Windy | Mostly Cloudy and Windy | Overcast and Windy";
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$retVal['hi_shwrs']="Showers in Vicinity | Showers in Vicinity Fog/Mist | Showers in Vicinity Fog | Showers in Vicinity Haze";
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$retVal['fzrara']="Freezing Rain Rain | Light Freezing Rain Rain | Heavy Freezing Rain Rain | Rain Freezing Rain | Light Rain Freezing Rain | Heavy Rain Freezing Rain | Freezing Drizzle Rain | Light Freezing Drizzle Rain | Heavy Freezing Drizzle Rain | Rain Freezing Drizzle | Light Rain Freezing Drizzle | Heavy Rain Freezing Drizzle";
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$retVal['hi_tsra']="Thunderstorm in Vicinity | Thunderstorm in Vicinity Fog/Mist | Thunderstorm in Vicinity Fog | Thunderstorm Haze in Vicinity | Thunderstorm in Vicinity Haze";
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$retVal['ra1']="Light Rain | Drizzle | Light Drizzle | Heavy Drizzle | Light Rain Fog/Mist | Drizzle Fog/Mist | Light Drizzle Fog/Mist | Heavy Drizzle Fog/Mist | Light Rain Fog | Drizzle Fog | Light Drizzle Fog | Heavy Drizzle Fog";
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$retVal['ra']="Rain | Heavy Rain | Rain Fog/Mist | Heavy Rain Fog/Mist | Rain Fog | Heavy Rain Fog";
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$retVal['nsvrtsra']="Funnel Cloud | Funnel Cloud in Vicinity | Tornado/Water Spout";
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$retVal['dust']="Dust | Low Drifting Dust | Blowing Dust | Sand | Blowing Sand | Low Drifting Sand | Dust/Sand Whirls | Dust/Sand Whirls in Vicinity | Dust Storm | Heavy Dust Storm | Dust Storm in Vicinity | Sand Storm | Heavy Sand Storm | Sand Storm in Vicinity";
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$retVal['mist']="Haze";
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return $retVal;
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}
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// end CLASS
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}
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?>
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