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<xattr_getxattr_remove>
Last updated: Mon, 16 Jul 2012

xattr_list

(PECL)

xattr_list --  Get a list of extended attributes

说明

array xattr_list ( string filename [, int flags] )

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

扩展的属性有两个不同的命名空间: user 和 root 命名空间。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 命名空间上进行操作,但是您可以使用 flags 参数进行更改。

参数

filename

The path of the file.

flags

表格 1. Supported xattr flags

XATTR_DONTFOLLOWDo not follow the symbolic link but operate on symbolic link itself.
XATTR_ROOTSet attribute in root (trusted) namespace. Requires root privileges.

返回值

This function returns an array with names of extended attributes.

例子 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

xattr_get()




<xattr_getxattr_remove>
 Last updated: Mon, 16 Jul 2012
 
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