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PHP operations for creating, deleting, copying, and checking files and directories
PHP operations for creating, deleting, copying, and checking files and directories
本篇文章主要介绍php针对文件与目录的创建、删除、复制、检查的操作，感兴趣的朋友参考下，希望对大家有所帮助。
本文实例讲述了php文件操作相关类，具体如下：
<?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);
?>总结：以上就是本篇文的全部内容，希望能对大家的学习有所帮助。
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