' : print "";
}

/**
 * Print info to a log file
 *
 * @author Andreas Gohr 
 */
function dbglog($msg){
  global $conf;
  if(is_object($msg) || is_array($msg)){
    $msg = print_r($msg,true);
  }

  $file = $conf['cachedir'].'/debug.log';
  $fh = fopen($file,'a');
  if($fh){
    fwrite($fh,date('H:i:s ').$_SERVER['REMOTE_ADDR'].': '.$msg."\n");
    fclose($fh);
  }
}

/**
 * Print a reversed, prettyprinted backtrace
 *
 * @author Gary Owen 
 */
function dbg_backtrace(){
  // Get backtrace
  $backtrace = debug_backtrace();

  // Unset call to debug_print_backtrace
  array_shift($backtrace);

  // Iterate backtrace
  $calls = array();
  $depth = count($backtrace) - 1;
  foreach ($backtrace as $i => $call) {
    $location = $call['file'] . ':' . $call['line'];
    $function = (isset($call['class'])) ?
    $call['class'] . $call['type'] . $call['function'] : $call['function'];

    $params = array();
    if (isset($call['args'])){
        foreach($call['args'] as $arg){
            if(is_object($arg)){
                $params[] = '[Object '.get_class($arg).']';
            }elseif(is_array($arg)){
                $params[] = '[Array]';
            }elseif(is_null($arg)){
                $param[] = '[NULL]';
            }else{
                $params[] = (string) '"'.$arg.'"';
            }
        }
    }
    $params = implode(', ',$params);

    $calls[$depth - $i] = sprintf('%s(%s) called at %s',
                          $function,
                          str_replace("\n", '\n', $params),
                          $location);
  }
  ksort($calls);

  return implode("\n", $calls);
}

/**
 * Remove all data from an array where the key seems to point to sensitive data
 *
 * This is used to remove passwords, mail addresses and similar data from the
 * debug output
 *
 * @author Andreas Gohr 
 */
function debug_guard(&$data){
    foreach($data as $key => $value){
        if(preg_match('/(notify|pass|auth|secret|ftp|userinfo|token|buid|mail|proxy)/i',$key)){
            $data[$key] = '***';
            continue;
        }
        if(is_array($value)) debug_guard($data[$key]);
    }
}