PHP マニュアル
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# xattr_supported

(no version information, might be only in CVS)

xattr_supported -- Check if filesystem supports extended attributes

## Description

bool xattr_supported ( string path [, int flags])

This functions checks if filesystem holding file path supports extended attributes. Read access to file path is required.

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).

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 ... */ } ?>`

See also xattr_get(), xattr_set(), xattr_remove(), xattr_list().

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