PHP manuál : function.xattr-supported.html


xattr_supported

xattr_supported

(PECL)

xattr_supported --  Check if filesystem supports extended attributes

Description

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.

Parameters

filename

The path of the tested file.

flags

Table 1. 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).

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 ... */
}

?>


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