Home Backend Development PHP Tutorial Linux系统递归生成目录中文件的md5的方法_php实例

Linux系统递归生成目录中文件的md5的方法_php实例

Jun 07, 2016 pm 05:12 PM
md5 php

linux下使用md5sum递归生成整个目录的md5
今天要用md5sum操作目录,递归生成目录下所有文件的md5值,结果发现它不支持递归操作于是写了个php脚本处理下
代码:

  <&#63;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);  
    }  
  } 

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注意:生成的md5值和文件之间是两个空格,否则导致错误如下

复制代码 代码如下:
md5sum: file1.md5: no properly formatted MD5 checksum lines found

在来个更简单的,使用linux的find命令一句搞定
代码:

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

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测试

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

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如图所示

201562992931727.png (1135×790)

这样把所有检测结果输出到屏幕上来了,如果最后一条显示这样的信息 md5sum: WARNING: 2 of 1147 computed checksums did NOT match 则说明在总共1147条中有2条是不符合的
然后我们可以

  md5sum -c file1.md5 | grep FAILED 

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就很容易知道是哪些文件的篡改过

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