xattr_list
(PECL xattr:0.9-1.0)
xattr_list — Get a list of extended attributes
說明
array xattr_list
( string $filename
[, int $flags
] )
This functions gets a list of names of extended attributes of a file.
擴充功能的屬性有兩個不同的名稱空間：user 和 root 名稱空間。user 名稱空間對所有用戶均有效，而 root 名稱空間僅對擁有 root 權限的用戶有效。xattr 預設在 user 名稱空間上進行操作，但是可以使用 flags 參數進行更改。
參數
- 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.
Return值
This function returns an array with names of extended attributes.
範例
Example#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);
}
?>