Функция PHP xattr_supported

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.

Список параметров:

Supported xattr flags

Возвращаемые значения

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).

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 ... */
   }
?>

Смотрите также xattr_get, xattr_list.