php - Rename files with its directory name -

i have directories files like:

folder1/filename.jpg folder2/filename.pdf folder3/filename.jpg 

and want rename files inside directories corresponding directory name (but keeping extension), like:

folder1/filename.jpg folder1/folder1.jpg folder2/filename.pdf folder2/folder2.pdf folder3/filename.jpg folder3/folder3.jpg 

edit: also, want copy renamed files directory (like "allfiles").

i found a similar question in perl language.

how achieve php?

here have way that:

<?php  // array subdirectories in directory $dirarray = array_filter(glob('/path/to/directory/*'), 'is_dir');  // $dir path subdirectory foreach ($dirarray $dir) {      // $dirname has future name of files in subdirectory     $dirname = basename($dir);      // take elements in subdirectory (except '.' , '..')     $filesarray = array_diff(scandir($dir), array('.', '..'));      $i = 0;     foreach ($filesarray $file) {         // take file extension rename method         $fileextension = pathinfo($file, pathinfo_extension);          $oldname = $dir . "/" . $file;         $newname = $dir . "/" . $dirname . "-" . $i . "." . $fileextension;          rename($oldname, $newname);         $i++;     } } 

if sure have 1 file in each subdirectory can use line $newname:

$newname = $dir . "/" . $dirname . "." . $fileextension;