php删除文件程序代码_PHP教程

if (unlink($file_delete)) {
echo "The file was deleted successfully.", "n";
} else {
echo "The specified file could not be deleted. Please try again.", "n";
}

$myfile = "./test1.txt";
if (file_exists($myfile)) {
$result=unlink ($myfile);
echo $result;
}
?>

function delFileUnderDir( $dirName="../Smarty/templates/templates_c" )
{
if ( $handle = opendir( "$dirName" ) ) {
while ( false !== ( $item = readdir( $handle ) ) ) {
if ( $item != "." && $item != ".." ) {
if ( is_dir( "$dirName/$item" ) ) {
delFileUnderDir( "$dirName/$item" );
} else {
if( unlink( "$dirName/$item" ) )echo "成功删除文件： $dirName/$item
n";
}
}
}
closedir( $handle );
}
}delDirAndFile( 'www.bKjia.c0m');

header("content-Type: text/html; charset=utf-8");
//配置开始
$path=".";//在些设置所删除的目录.为当前目录 如：删除path目录，引号里请添path;
$guolv="del.php,install.php,path";//设置需要过滤的文件或文件夹用英文状态下,号分隔
//配置结束
if($_GET['action']=="del"){
$file= array_values_recursive(recurdir($path,$guolv));
foreach($file as $k => $v){
remove_directory($v);
}
}else{
echo "您的配置如下

要删除的目录为：
";
if($path==".")echo "当前目录";else echo $path;
echo "
您要过滤的文件或文件夹有：".$guolv."

如果确认过滤请点击此处开始删除相应的目录及目录下的所有文件，如果配置不正确请到文件中修改
";
}

//删除目录及文件
function remove_directory($dir) {
foreach(glob($dir) as $fn) {
echo " removing $fn
n";
if (!is_writable($fn))@chmod($fn, 0777);
if(is_dir($fn)){@rmdir($fn);}else{@unlink($fn);}
}
}
//扫描目录
function recurdir($pathname,$guolv='del.php')
{
$result=array();$temp=array();
//检查目录是否有效和可读
if(!is_dir($pathname) || !is_readable($pathname))
return null;
//得到目录下的所有文件夹
$allfiles=scandir($pathname);
foreach($allfiles as $key => $filename)
{
//如果是“.”或者“..”的话则略过
if(in_array($filename,array('.','..')))continue;
if(count($guolv)>0){$lv=explode(",",$guolv);if(in_array($filename,$lv))continue;}

//得到文件完整名字
$fullname =$pathname . "/" .$filename;
//如果该文件是目录的话，递归调用recurdir
$temp[]=$fullname;
if(is_dir($fullname)){
$nowpath=explode("/",$fullname);
if(count($guolv)>0){$lv=explode(",",$guolv);if(in_array($nowpath[count($nowpath)-1],$lv))continue;}
$result[$filename] = recurdir($fullname);}
}
//最后把临时数组中的内容添加到结果数组，确保目录在前，文件在后
foreach($temp as $f){
$result[]=$f;
}
return $result;
}
//获取所有文件
function array_values_recursive($ary)
{
$lst = array();
foreach( array_keys($ary) as $k ){
$v = $ary[$k];
if (is_array($v)) {$lst = array_merge( $lst, array_values_recursive($v));}else{$lst[] = $v;}
}
return $lst;
}
?>