xattr_supported

(PECL xattr >= 1.0.0)

xattr_supported — Check if filesystem supports extended attributes

Descrizione

xattr_supported(string $filename, int $flags = 0): bool

This functions checks if the filesystem holding the given file supports extended attributes. Read access to the file is required.

Elenco dei parametri

filename

The path of the tested file.

flags

**Supported xattr flags**
`XATTR_DONTFOLLOW`	Do not follow the symbolic link but operate on symbolic link itself.

Valori restituiti

This function returns true if filesystem supports extended attributes, false if it doesn't and null if it can't be determined (for example wrong path or lack of permissions to file).

Esempi

Example #1 xattr_supported() example

The following code checks if we can use extended attributes.

<?php
$file = 'some_file';

if (xattr_supported($file)) {
    /* ... make use of some xattr_* functions ... */
}

?>

Vedere anche:

xattr_get() - Get an extended attribute
xattr_list() - Get a list of extended attributes

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