<?
function get_data($item) {
  $doc = new DOMDocument();
  $doc->load('http://weather/weather/all-output.xml');
  $arrFeeds = array();
  foreach ($doc->getElementsByTagName('weather') as $node) {
    $itemRSS = array ( 
      $item => $node->getElementsByTagName($item)->item(0)->nodeValue,
      );
    array_push($arrFeeds, $itemRSS);
  }
  echo $itemRSS[$item];
}

function summon($person,$status) {
  $myFile = "summon.txt";
  $list = file("summon.txt");
  $fh = fopen($myFile, 'w') or die("can't open file");
  $matched=0;
  foreach ($list as $summoned) {
    list($item,$flag) = split("=",trim($summoned));
    if ($person == $item) {
      fwrite($fh, "$person=$status\n");
      $matched=1; 
    } else {
      if (strlen($item) > 0) {
        fwrite($fh, "$item=$flag\n");
      }
    }
  }
  fclose($fh);
  if ($matched==0) {
    $fh = fopen($myFile, 'a') or die("can't open file");
    fwrite($fh, "$person=$status\n");
    fclose($fh);
  }
}

function summon_status($person) {
  $myFile = "summon.txt";
  $list = file("summon.txt");
  foreach ($list as $summoned) {
    list($item,$flag) = split("=",$summoned);
    if ($person == $item) {
      return($flag);
    }    
  }
  return($status);
}
?>