<?php
$url = "http://www.reddit.com/user/MattRichardson/about.json";
$str = file_get_contents($url);
$val = json_decode($str);
echo $val->data->link_karma;

$myFile = "reddit-" . date("Ymd"). ".txt";
$fh = fopen($myFile, 'w') or die("can't open file");
fwrite($fh, $val->data->link_karma);
fclose($fh);

?>