PHP recursively traverses all files in a folder and deletes all files in the folder_PHP tutorial

php recursively deletes all files in the directory:

<?php
header("content-type:text/html;charset=utf-8");
/**
*删除指定目录()删除子目录和文件
*@path  文件目录路径 string
*@return void
*/
function hello($path){
//1:判断删除目录是否存在
if(!file_exists($path)){
  return false;
}
//2:将目录内容全部获取出
$list = scandir($path);
//3:遍历目录
foreach($list as $f){
//4:将 .  .. 排除在外
if($f != '.' && $f != '..'){
 //5:如果内容文件 unlink
 if(is_file($path."/".$f)){
  unlink($path.".".$f);
 }else{
   //6:目录   递归
   hello($path."/".$f);
 }
}
}//foreach end
//7:循环外删除目录!!
rmdir($path);
}

?>

php recursively extracts all files in the directory:

<?php
header('content-type:text/html;charset=gbk');
ini_set("date.timezone", "Asia/Chongqing");
/*
 * 遍历一个指定目录（）包括子目录和文件
 * @param string $path 指定目录名称
 * @return viod
 */
class dir{
function upl($path){
//判断处理的目录是否存在   不存在 return false;
if(!file_exists($path)){
return false;
}
//列出当前目录内容
$list=scandir($path);
foreach($list as $f){
//去除 . ..
if($f!='.'&&$f!='..'){
//判断是否是一个目录【$path.'/'.$f】
if(is_dir($path."/".$f)){
//输出	
echo $path."/".$f."<br />";
//递归调用自己
$this->upl($path."/".$f);
}else{
//如果文件存在输出
echo $path."/".$f."<br />";
}
}//if end

}//foreach end
}
}
$a=new dir();
$a->upl("d:/www/guo/application");

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