<?php
require_once('magpierss/rss_fetch.inc');

	$url = "http://newsrss.bbc.co.uk/weather/forecast/2376/Next3DaysRSS.xml";
        $rss = fetch_rss( $url );
	$message = "";
	if(sizeof($rss->items) != 3){
		$message .= 'Error: problem parsing BBC weather feed';
	}
	$i=0;
        foreach ($rss->items as $item) {
                $href = $item['link'];
                $title = $item['title'];
		preg_match('/Min Temp:.+?-*\d*/',$title,$mintemp);
		preg_match('/Max Temp:.+?-*\d*/',$title,$maxtemp);
		$mintemp[0] = str_replace('Min Temp: ','',$mintemp[0]);
		$maxtemp[0] = str_replace('Max Temp: ','',$maxtemp[0]);
		$mins[$i] = (int)$mintemp[0];	
		$maxs[$i] = (int)$maxtemp[0];
		$i++;	
        }

	// freezing warnings

	if($mins[0] < 0){
		$message .= "Today's temperature in W3 may go below freezing, anything down to ".$mins[0];
	}
	if($mins[1] < 0){
		$message .= "Tommorow's temperature in W3 may go below freezing, anything down to ".$mins[1];
	}

	if($message){
		$to = "contact@davidcraddock.net";
		$subject = "Freezing weather alert for " . date('l jS \of F');
		mail($to,$subject,$message);
	}

?>