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Php xattr get () function

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(no version information, might be only in CVS)

xattr_get --  Get an extended attribute

Syntax

string xattr_get ( string filename, string name [, int flags] )

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

Extended attributes have two different namespaces: user and root namespace. User namespace is available for all users while root namespace is available only for user with root privileges. xattr operates on user namespace by default, but you can change that using flags argument.

Parameters

filename

The file from which we get the attribute.

name

The name of the attribute.

flags

Table 1. Supported xattr flags

XATTR_DONTFOLLOWDo not follow the symbolic link but operate on symbolic link itself.
XATTR_ROOTSet attribute in root (trusted) namespace. Requires root privileges.

Return Values

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

Examples

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 ... */

?>

Php xattr get Function syntax tag

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Php xattr get syntax tutorial

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