<?php

 if(@$handle = fopen($file, 'r')){
    $data = @fread($handle, filesize($file));
    fclose($handle);
 }
 
 while(strlen($data) > $maxlen){
  $temp = explode("\n\n", $data);
  unset($temp[count($temp)-1]);
  $data = implode("\n\n", $temp);
 }
 
 if(@$handle = fopen($file, 'w')){
    fwrite($handle, $input.$data);
    fclose($handle);
    unset($file, $maxlen, $input, $data, $temp, $handle);
 }

?>