Iterate through directories recursively in PHP -

when upload photos web server try split photos several folders won't have many photos in 1 single folder.

for example inside class:

$filename = hash('crc32b', mt_rand()); $img_dir = upload_dir.ds.'img'.ds.$filename[0].$filename[1].ds.$filename[2].$filename[3].ds.$filename[4].$filename[5]; 

ds short version of directory_separator

this create directories these:

public_html\assets\upload\img\25\55\8b public_html\assets\upload\img\00\8c\2a 

if file not exist , there no directories already

$img_path = $img_dir.ds.$filename.'.jpg';  if (!file_exists($img_path) && !is_dir($img_dir)) {     $mode = 0755;     mkdir($img_dir, $mode, true);      chmod(upload_dir, $mode);     chmod(upload_dir.ds.'img', $mode);     chmod(upload_dir.ds.'img'.ds.$filename[0].$filename[1], $mode);     chmod(upload_dir.ds.'img'.ds.$filename[0].$filename[1].ds.$filename[2].$filename[3], $mode);     chmod(upload_dir.ds.'img'.ds.$filename[0].$filename[1].ds.$filename[2].$filename[3].ds.$filename[4].$filename[5], $mode); } 

i wan't folders 755, how can recursively?

edit:

also why 493 output when echo $mode; or echo 0755; ?

if have access shell, , assuming os linux, i'd go with:

system('chmod -r ' . escapeshellarg(upload_dir)); 

as edit, 0755 octal in decimal 493.

edit: can try function, beware $path should full path single file, or path directory without trailing slash

function chmod_recursive($path, $mode) {     if(is_dir($path)) {         foreach(glob("$path/*") $file) {             chmod_recursive($file, $mode);         }     }     else if(is_file($path)) {         chmod($path, $mode);     } } 

calling this:

chmod_recursive(upload_dir, 0755);