CHOWN(3) 1 CHOWN(3)chown - Changes file ownerSYNOPSIS
bool chown (string $filename, mixed $user)
DESCRIPTION
Attempts to change the owner of the file $filename to user $user. Only the superuser may change the owner of a file.
PARAMETERS
o $filename
- Path to the file.
o $user
- A user name or number.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
Simple chown(3) usage
<?php
// File name and username to use
$file_name= "foo.php";
$path = "/home/sites/php.net/public_html/sandbox/" . $file_name ;
$user_name = "root";
// Set the user
chown($path, $user_name);
// Check the result
$stat = stat($path);
print_r(posix_getpwuid($stat['uid']));
?>
The above example will output something similar to:
Array
(
[name] => root
[passwd] => x
[uid] => 0
[gid] => 0
[gecos] => root
[dir] => /root
[shell] => /bin/bash
)
NOTES
Note
This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.
Note
When safe mode is enabled, PHP checks whether the files or directories being operated upon have the same UID (owner) as the script
that is being executed.
SEE ALSO chmod(3), chgrp(3).
PHP Documentation Group CHOWN(3)
Check Out this Related Man Page
CHGRP(3) 1 CHGRP(3)chgrp - Changes file groupSYNOPSIS
bool chgrp (string $filename, mixed $group)
DESCRIPTION
Attempts to change the group of the file $filename to $group.
Only the superuser may change the group of a file arbitrarily; other users may change the group of a file to any group of which that user
is a member.
PARAMETERS
o $filename
- Path to the file.
o $group
- A group name or number.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
Changing a file's group
<?php
$filename = 'shared_file.txt';
$format = "%s's Group ID @ %s: %d
";
printf($format, $filename, date('r'), filegroup($filename));
chgrp($filename, 8);
clearstatcache(); // do not cache filegroup() results
printf($format, $filename, date('r'), filegroup($filename));
?>
NOTES
Note
This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.
Note
When safe mode is enabled, PHP checks whether the files or directories being operated upon have the same UID (owner) as the script
that is being executed.
SEE ALSO chown(3), chmod(3).
PHP Documentation Group CHGRP(3)
I am trying to run chown and chmod from a script owned by root. The permissions are set to 4755 so that users can execute the script as root. However, when I run the script as a user other than root, I get "Operation not permitted" for both chown and chmod. Any ideas as to why this is? (6 Replies)
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$
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