PHP Manual: Check if filesystem supports extended attributes

Description

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.

Parameters

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.

Return Values

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).

Examples

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 ... */
}

?>

xattr_supported

Description

Parameters

Return Values

Examples

See Also