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fileowner

(PHP 4, PHP 5, PHP 7, PHP 8)

fileownerGets file owner

Description

fileowner(string $filename): int|false

Gets the file owner.

Parameters

filename

Path to the file.

Return Values

Returns the user ID of the owner of the file, or false on failure. The user ID is returned in numerical format, use posix_getpwuid() to resolve it to a username.

Errors/Exceptions

Upon failure, an E_WARNING is emitted.

Examples

Example #1 Finding the owner of a file

<?php
$filename
= 'index.php';
print_r(posix_getpwuid(fileowner($filename)));
?>

Notes

Note: The results of this function are cached. See clearstatcache() for more details.

Tip

As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to Supported Protocols and Wrappers to determine which wrappers support stat() family of functionality.

See Also

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User Contributed Notes 3 notes

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11
dazoe
14 years ago
Remember to use if(fileowner(...) === FALSE) instead of if(!fileowner()) or if(fileowner() == FLASE) because if the owner was "root" it would return 0.
up
9
Anonymous
18 years ago
Small note: the function resolves symbolic links. That is, if the link is created by user 999 and maps to a file owned by user 666, this function returns 666 :(
up
7
chris at ocproducts dot com
4 years ago
This function will always return 0 on Windows, because Windows does not support numeric user IDs.
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