xattr_list

(PECL xattr >= 0.9.0)

xattr_list Get a list of extended attributes

说明

xattr_list(string $filename, int $flags = 0): array

This functions gets a list of names of extended attributes of a file.

扩展的属性有两种 不同的命名空间:user 和 root。user 命名空间对所有用户均有效,而 root 命名空间仅对拥有 root 权限的用户有效。 xattr 默认在 user 命名空间上操作,但可使用 flags 参数进行更改。

参数

filename

The path of the file.

flags

Supported xattr flags
XATTR_DONTFOLLOW Do not follow the symbolic link but operate on symbolic link itself.
XATTR_ROOT Set attribute in root (trusted) namespace. Requires root privileges.

返回值

This function returns an array with names of extended attributes.

示例

示例 #1 Prints names of all extended attributes of file

<?php
$file
= 'some_file';
$root_attributes = xattr_list($file, XATTR_ROOT);
$user_attributes = xattr_list($file);

echo
"Root attributes: \n";
foreach (
$root_attributes as $attr_name) {
printf("%s\n", $attr_name);
}

echo
"\n User attributes: \n";
foreach (
$attributes as $attr_name) {
printf("%s\n", $attr_name);
}

?>

参见

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top