Comments on: MRTG Script to Graph the Current Outdoor Temperature

By: az

az — Mon, 04 Jan 2010 08:11:01 +0000

hi.good day.i am developing a system that has to do with mrtg. the system has log in page and user may enter and see their mrtg graph.
But i am not sure how to create the graph.
Could u help me to sort out this thing.
thank you.

By: calivw78

calivw78 — Thu, 03 Dec 2009 14:15:15 +0000

Also, I would like it to display negative values if they are present. I tried stripping out some of the code here and there without luck.

By: calivw78

calivw78 — Thu, 03 Dec 2009 10:01:41 +0000

Exactly what I needed, thanks. I’m not the best at scripting though, so when I adjusted to make a second graph for gathering pressure and humidity, I failed brilliantly 🙂 Below is what I was attempting to do, and I get output. The problem is that the output is “1” off, meaning that instead of grabbing the humidity, it grabs the value listed below it on the web page, like visibility. Any tips? Thanks again.

#!/usr/bin/php

$zipcode = $argv[1]; $page = file_get_contents("https://www.wunderground.com/cgi-bin/findweather/getForecast?query=$zipcode&wuSelect=WEATHER");


if (preg_match('#Humidity:.*?([0-9\.]+)#s', $page, $matches)) {

    $humidity = $matches[1];

}
if (preg_match('#Pressure:.*?([0-9\.]+)#s', $page, $matches)) {

    $pressure = $matches[1];

}
echo "$humidity\n$pressure\n\n";

?>