<?php  
   
  $path ='/data/www/bbs/source';  
  $outfile = 'file.md5';  
  get_file_md5($path, $outfile);  
   
  function get_file_md5($path, $outfile)  
  {  
    $path = rtrim($path, '/');  
    if(function_exists('scandir'))  
    {  
      $files = scandir($path);  
      foreach($files as $v)  
      {  
        if($v != '.' && $v != '..')  
        {  
          $file = $path.'/'.$v;  
          if(is_dir($file))  
          {  
            get_file_md5($file, $outfile);  
          }else 
          {  
            file_put_contents($outfile, md5_file($file)." ".$file."\n", FILE_APPEND);  
          }  
        }  
      }  
    }else 
    {  
      $files = opendir($path);  
      while(($f = readdir($files)) !== false)  
      {  
        if($f == '.' || $f == '..')  
          continue;  
        $file = $path.'/'.$f;  
        if(is_dir($file))  
        {  
          get_file_md5($file, $outfile);  
        }else 
        {  
          file_put_contents($outfile, md5_file($file)." ".$file."\n", FILE_APPEND);  
        }  
      }  
      closedir($files);  
    }  
  } 

  find /data/www/bbs/source -type f -print0 | xargs -0 md5sum > file2.md5 

  md5sum -c file1.md5 
  md5sum -c file2.md5  

  md5sum -c file1.md5 | grep FAILED