PHP Dokumentation: Function xattr-supported
12. Januar 2010 von werner
xattr_supported
(PECL xattr >= 1.0.0)
xattr_supported — Check if filesystem supports extended attributes
Beschreibung
bool xattr_supported ( string $filename [, int $flags = 0 ] )
This functions checks if the filesystem holding the given file supports extended attributes. Read access to the file is required.
Parameter-Liste
- 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.
Rückgabewerte
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).
Beispiele
Beispiel #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 ... */
}?>Siehe auch
- xattr_get() – Get an extended attribute
- xattr_list() – Get a list of extended attributes
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