php traverses the directory output directory and all the sample files under it

Many written tests will encounter this problem, so deliberately to write out

 
function my_scandir($dir){ 
$files=array(); 
if(is_dir($dir)){ 
if($handle=opendir($dir)){ 
while(($file=readdir($handle))!==false){ 
if($file!='.' && $file!=".."){ 
if(is_dir($dir."/".$file)){ 
$files[$file]=my_scandir($dir."/".$file); 
}else{ 
$files[]=$dir."/".$file; 
} 
} 
} 
} 
} 
closedir($handle); 
return $files; 
}