(PECL xattr >= 1.0.0)
xattr_supported — Check if filesystem supports extended attributes
$filename, int $flags = 0): boolThis functions checks if the filesystem holding the given file supports extended attributes. Read access to the file is required.
filenameThe path of the tested file.
flags
XATTR_DONTFOLLOW |
Do not follow the symbolic link but operate on symbolic link itself. |
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).
示例 #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 ... */
}
?>