Implementation detail for traversing the file directory with PHP and clearing the files in the directory
- 2020-06-19 09:55:40
- OfStack
Today boring practice 1 PHP traversal file directory procedures, prepared the following two procedures, but the quality is not very good, tap ~~~
1. Clear PHP cache files
2. Traverse all files in the directory
1. Clear PHP cache files
<?php
function read_dir($dir,$file)
{
$a =strpos($file,".php");
if($a>0)
{
unlink($dir . $file);
echo "delete $dir$file <br>";
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); // Recursive calls
}
}
}
function clear_caches()
{
$dir = "./temp/"; // To remove the PHP Cache file directory
if(!is_dir($dir)) die("It is not a dir");
$dh = opendir($dir);
while(($file = readdir($dh) )!=false)
{
//var_dump($file);
read_dir($dir,$file);
}
}
?>
2. Traverse all files in the directory
<html>
<head>
<meta http-enquiv="Content-Type" content="text/html;charset=gb2312">
<title> Check the directory </title>
</head>
<body>
<table width="600" align="center">
<tr>
<th width="50%"> The file name </th>
<th width="25%"> Modify the time </th>
<th width="25%"> File size ( k ) </th>
</tr>
<?php
//$dir = "./admin/";
$dir = "c:/";
$up_dir = " The higher the directory ";
$up_url = $dir;
if(isset($_REQUEST['act']) && $_REQUEST['act']=='list_dir')
{
if(emptyempty($_REQUEST['dir']))
{
$up_dir=" Empty directory! ";
}
$dir = isset($_REQUEST['dir']) ? $_REQUEST['dir'] : $dir;
}
if(!is_dir($dir))
{
$up_dir=" Invalid directory! ";
}
?>
<tr>
<td colspan="3">
<?php
if(strpos($up_dir," The higher the directory ")!==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 = $up_url ."/";
}
echo "<a href=\"test.php?act=list_dir&dir=$up_url\">$up_dir</a>";
}
else
{
echo $up_dir;
die();
}
?>
</td>
</tr>
<?php
$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 . $file)/1000;
echo "<tr><td>$file</td><td>$time</td><td>$size</td></tr>";
}
else
{
$time = date("Y-m-d H:i:s.", filectime($dir . $file));
$size = filesize($dir . $file)/1000;
$dir = $dir . $file ."/";
echo "<tr><td><a href =\"test.php?act=list_dir&dir=$dir\">$file</a></td><td>$time</td><td>$size</td></tr>";
$dir = $up_dir;
}
}
}
?>
</table>
<?php die(); ?>
</body>
</html>