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php文件操作相关类实例,

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Release: 2016-06-13 09:00:51
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php文件操作相关类实例,

本文实例讲述了php文件操作相关类。分享给大家供大家参考。具体如下:

<&#63;php
 class file_dir
 {
  function check_exist($filename)
  //检查目录或文件是否存在
  {
   if(file_exists($filename))
   {
    return true;
   }
   else return false;
  }
  function create_dir($dirname,$mode=0777)
  // 一次只能创建一级目录
  {
   if(is_null($dirname) || $dirname=="") return false;
   if(!is_dir($dirname))
   {
    return mkdir($dirname,$mode);
   }
  }
  function createDir($aimUrl) //可同时创建多级目录
  {
   $aimUrl = str_replace('\\', '/', $aimUrl);
   $aimDir = '';
   $arr = explode('/', $aimUrl);
   foreach ($arr as $str)
   {
    $aimDir .= $str . '/';
    if (!file_exists($aimDir))
    {
     mkdir($aimDir);
    }
   }
  }
  function delete_dir($dirname) //删除目录
  {
   if($this->check_exist($dirname) and is_dir($dirname))
   {
    if(!$dirhandle=opendir($dirname)) return false;
    while(($file=readdir($dirhandle))!==false)
    {
     if($file=="." or $file=="..") continue;
     $file=$dirname.DIRECTORY_SEPARATOR.$file;
     //表示$file是$dir的子目录
     if(is_dir($file))
     {
      $this->delete_dir($file);
     }
     else
     {
      unlink($file);
     }
    }
    closedir($dirhandle);
    return rmdir($dirname);
   }
   else return false;
  }
  function copy_dir($dirfrom,$dirto) //复制目录
  {
   if(!is_dir($dirfrom)) return false;
   if(!is_dir($dirto))  mkdir($dirto);
   $dirhandle=opendir($dirfrom);
   if($dirhandle)
   {
    while(false!==($file=readdir($dirhandle)))
    {
     if($file=="." or $file=="..") continue;
     $filefrom=$dirfrom.DIRECTORY_SEPARATOR.$file;
     //表示$file是$dir的子目录
     $fileto=$dirto.DIRECTORY_SEPARATOR.$file;
     if(is_dir($filefrom))
     {
      $this->copy_dir($filefrom,$fileto);
     }
     else
     { if(!file_exists($fileto))
      copy($filefrom,$fileto);
     }
    }
   }
   closedir($dirhandle);
  }
  function getdir_size($dirname) //获取目录大小
  {
   if(!file_exists($dirname) or !is_dir($dirname)) return false;
   if(!$handle=opendir($dirname)) return false;
   $size=0;
   while(false!==($file=readdir($handle)))
   {
    if($file=="." or $file=="..") continue;
    $file=$dirname."/".$file;
    if(is_dir($file))
    {
     $size+=$this->getdir_size($file);
    }
    else
    {
     $size+=filesize($file);
    }
   }
   closedir($handle);
   return $size;
  }
  function getReal_size($size) // 单位自动转换函数
  {
   $kb=1024;
   $mb=$kb*1024;
   $gb=$mb*1024;
   $tb=$gb*1024;
   if($size<$kb) return $size."B";
   if($size>=$kb and $size<$mb) return round($size/$kb,2)."KB";
   if($size>=$mb and $size<$gb) return round($size/$mb,2)."MB";
   if($size>=$gb and $size<$tb) return round($size/$gb,2)."GB";
   if($size>=$tb) return round($size/$tb,2)."TB";
  }
  function copy_file($srcfile,$dstfile)
  {
   if(is_file($srcfile))
   {
    if(!file_exists($dstfile))
    return copy($srcfile,$dstfile);
   }
   else return false;
  }
  function unlink_file($filename) //删除文件
  {
   if($this->check_exist($filename) and is_file($filename))
   {
    return unlink($filename);
   }
   else return false;
  }
  function getsuffix($filename)
  //获取文件名后缀
  {
   if(file_exists($filename) and is_file($filename))
   {
    return end(explode(".",$filename));
   }
  }
  function input_content($filename,$str)
  //将字符串写入文件
  {
   if(function_exists(file_put_contents))
   {
    file_put_contents($filename,$str);
   }
   else
   {
    $fp=fopen($filename,"wb");
    fwrite($fp,$str);
    fclose($fp);
   }
  }
  function output_content($filename)
  //将整个文件内容读出到一个字符串中
  {
   if(function_exists(file_get_contents))
   {
    return file_get_contents($filename);
   }
   else
   {
    $fp=fopen($filename,"rb");
    $str=fread($fp,filesize($filename));
    fclose($fp);
    return $str;
   }
  }
  function output_to_array($filename)
  //将文件内容读出到一个数组中
  {
   $file=file($filename);
   $arr=array();
   foreach($file as $value)
   {
    $arr[]=trim($value);
   }
   return $arr;
  }
 }
 //$dir=new file_dir;
 //$size=$dir->getdir_size("F:/wamp/www/class/images");
 //echo $dir->getReal_size($size);
&#63;>

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