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Check if filesystem supports extended attributes (PECL xattr:1.0)
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.



The path of the tested file.


Table 334. Supported xattr flags

XATTR_DONTFOLLOWDo 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).


Example 2628. xattr_supported() example

The following code checks if we can use extended attributes.

= 'some_file';

if (
xattr_supported($file)) {
/* ... make use of some xattr_* functions ... */