xattr_remove

(PECL xattr >= 0.9.0)

xattr_remove — Remove an extended attribute

xattr_remove(string $filename, string $name, int $flags = 0): bool

This function removes an extended attribute 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。

filename

The file from which we remove the attribute.

name

The name of the attribute to remove.

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.

成功时返回 true，或者在失败时返回 false。

示例 #1 Removes all extended attributes of a file

<?php
$file = 'some_file';
$attributes = xattr_list($file);

foreach ($attributes as $attr_name) {
    xattr_remove($file, $attr_name);
}
?>

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