//遍歷子文件夾和文件夾的內容 并且計算出文件的多少
//一個demo 引號替換下
function scan($dir){
  static $i=0;
  static $d=0;
  $dirArr = scandir('.');
  foreach($dirArr as $v){
   if($v!='.'  $v!='..'){
     $dirname = $dir."\\".$v; //子文件夾的目錄地址
    if(is_dir($dirname)){
   $count['dir'] = ++$d;
     scan($dirname);
    }
    $count['file'] = ++$i;
   }
  }
  return $count;
}
$count = scan('.');
echo "一共文件{$count['file']}個,文件夾 {$count['dir']}個 ";

//針對當前目錄的情況下
$dir = scandir('.');
foreach($dir as $v){
  $base = strrchr($v,'.');
  if($v!='.'){
  if($v == '..'){
   $type ='上級目錄';
  }
  //類型不一一舉例
  if(is_dir($v)){
   $type ='目錄';
  }elseif($base== '.jpg' || $base=='.gif'){
   $type =' 圖片文件';
  }elseif($base== '.rar' || $base=='.zip'){
   $type =' 壓縮文件';
  }else{
   $type="文件";
  }
  }
}