Here we are solving a basic problem faced by a beginner web developer in PHP i.e. How to change file owner in PHP
// File name and username to use
$path = "/home/sites/php.net/public_html/sandbox/" . $file_name ;
$user_name = "root";
// Set the user
// Check the result
$stat = stat($path);
attempts to change the owner of the file filename to user. Only the superuser may change the owner of a file.
bool chown ( string $filename , mixed $user )
Path to the file.
A user name or number.
This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.