使用PHP遍曆檔案目錄與清除目錄中檔案的實現詳解_PHP教程

今天無聊中練習了一下PHP遍曆檔案目錄的程式，編寫了以下兩個程式，不過品質不是很好，輕拍~~~
1、清除PHP快取檔案
複製代碼 代碼如下:

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); //遞迴調用
}
}
}

function clear_caches()
{
$dir = "./temp/"; //要清除的PHP快取檔案目錄

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、遍曆目錄中所有檔案
複製代碼 代碼如下:




查看目錄
































































//$dir = "./admin/"; $dir = "c:/"; $up_dir = "上級目錄"; $up_url = $dir; if(isset($_REQUEST['act']) && $_REQUEST['act']=='list_dir') { if(emptyempty($_REQUEST['dir'])) { $up_dir="目錄為空白！"; } $dir = isset($_REQUEST['dir']) ? $_REQUEST['dir'] : $dir; } if(!is_dir($dir)) { $up_dir="無效目錄！"; } ?> $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; } } } ?>

檔案名稱	修改時間	檔案大小（k）
if(strpos($up_dir,"上級目錄")!==false) { //if($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

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