How to copy a backup file using copy () in php

One question about using copy () to copy backup files in php is that I am using copy () to copy backup files in php. & lt ;? Php $ file & nbsp; d: tempexample.txt & nbsp; $ newfile & nbsp; e: example.txt & nbsp; if & nbsp ;(! & A question about copying backup files using copy () in php
I'm using php copy () to copy backup files.
$ File = 'd:/temp/example.txt ';
$ Newfile = 'E:/example.txt ';

If (! Copy ($ file, $ newfile )){
Echo "failed to copy $ file... \ n ";
}
?>
The time for copying a backup file is the time for completing the copy, and I do not know how to deal with the time for copying the backup file.
Give advice to the experts.
------ Solution ----------------------

Touch ($ newfile, filectime ($ file ));