欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  后端开发

使用PHP遍历文件目录与清除目录中文件的实现详解_php技巧

程序员文章站 2024-04-02 21:14:46
...
今天无聊中练习了一下PHP遍历文件目录的程序,编写了以下两个程序,不过质量不是很好,轻拍~~~
1、清除PHP缓存文件
复制代码 代码如下:


function read_dir($dir,$file)
{
$a =strpos($file,".php");

if($a>0)
{
unlink($dir . $file);
echo "delete $dir$file
";
return true;
}

if(strpos($file,".") === 0 || strpos($file,".") !== false ) return true;

if(strpos($file,".") === false || strpos($dir,"/") === false)
{
$dir = $dir . $file . "/";
if(!is_dir($dir)) return false;
$dh = opendir($dir);
while(($file = readdir($dh)) != false)
{
read_dir($dir,$file); //递归调用
}
}
}

function clear_caches()
{
$dir = "./temp/"; //要清除的PHP缓存文件目录

if(!is_dir($dir)) die("It is not a dir");
$dh = opendir($dir);

while(($file = readdir($dh) )!=false)
{
//var_dump($file);
read_dir($dir,$file);

}
}


?>

2、遍历目录中所有文件
复制代码 代码如下:





查看目录












//$dir = "./admin/";
$dir = "c:/";
$up_dir = "上级目录";
$up_url = $dir;

if(isset($_REQUEST['act']) && $_REQUEST['act']=='list_dir')
{
if(emptyempty($_REQUEST['dir']))
{
$up_dir="目录为空!";
}
$dir = isset($_REQUEST['dir']) ? $_REQUEST['dir'] : $dir;

}
if(!is_dir($dir))
{
$up_dir="无效目录!";
}

?>




$up_dir = $dir;
$dh = opendir($dir);
while(($file=readdir($dh)) != false)
{
if($file != "." && $file != ".." && $file != ".svn" )
{
if(strpos($file,".") !==false)
{
$time = date("Y-m-d H:i:s", filectime($dir . $file));
$size = filesize($dir . $file)/1000;
echo "";
}
else
{
$time = date("Y-m-d H:i:s.", filectime($dir . $file));
$size = filesize($dir . $file)/1000;
$dir = $dir . $file ."/";

echo "";
$dir = $up_dir;

}
}
}

?>


文件名 修改时间 文件大小(k)


if(strpos($up_dir,"上级目录")!==false)
{
//if($up_url=="") echo $up_dir;
if($dir != "./admin/")
{
$up_url = substr($dir,0,-1);
$k = strrpos($up_url,"/");
$up_url = substr($up_url,0,$k-strlen($up_url));
$up_url = $up_url ."/";
}
echo "$up_dir";
}
else
{
echo $up_dir;
die();
}
?>
$file $time $size
$file $time $size