<?
  $MAXLEN = 1000;
  // r -> read w -> write a -> append
  $fp = fopen("hoge", "r");
  flock($fp, 1);     // 1: read 2: write 3: unlock
  while(!feof($fp)) {
    $line = fgets($fp, $MAXLEN);
    //fputs($fp, $line); // write
    //echo "hogehoge...\n";
    echo $line;
  }
  flock($fp, 3);
  fclose($fp);

?>