xattr_get

(PECL xattr >= 0.9.0)

xattr_get — Get an extended attribute

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xattr_get ( string $filename , string $name [, int $flags = 0 ] ) : string

This function gets the value of an extended attribute of a file.

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filename

The file from which we get the attribute.

name

The name of the attribute.

flags

Supported xattr flags
XATTR_DONTFOLLOW Do not follow the symbolic link but operate on symbolic link itself.
XATTR_ROOT Set attribute in root (trusted) namespace. Requires root privileges.

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Returns a string containing the value or FALSE if the attribute doesn't exist.

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Example #1 Checks if system administrator has signed the file

<?php
$file = '/usr/local/sbin/some_binary';
$signature = xattr_get($file, 'Root signature', XATTR_ROOT);

/* ... check if $signature is valid ... */

?>

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