xattr Funkcjexattr_supported
(PECL xattr:1.0)
xattr_supported — Check if filesystem supports extended attributes
Opis
bool xattr_supported
( string $filename
[, int $flags
] )
This functions checks if the filesystem holding the given file supports extended attributes. Read access to the file is required.
Parametry
- 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.
Zwracane wartości
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).
Przykłady
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 ... */
}
?>
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