(PECL xattr >= 0.9.0)
xattr_get — Get an extended attribute
$filename
, string $name
[, int $flags = 0
] ) : stringThis function gets the value of an extended attribute of a file.
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锟斤拷 root锟斤拷user 锟斤拷锟斤拷锟秸硷拷锟斤拷锟斤拷锟斤拷没锟斤拷锟斤拷锟叫э拷锟斤拷锟� root
锟斤拷锟斤拷锟秸硷拷锟斤拷锟接碉拷锟� root 权锟睫碉拷锟矫伙拷锟斤拷效锟斤拷
xattr 默锟斤拷锟斤拷 user 锟斤拷锟斤拷锟秸硷拷锟较诧拷锟斤拷锟斤拷锟斤拷锟斤拷使锟斤拷
flags 锟斤拷锟斤拷锟斤拷锟叫革拷锟侥★拷
filenameThe file from which we get the attribute.
nameThe name of the attribute.
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. |
Returns a string containing the value or FALSE if the attribute doesn't
exist.
Example #1 Checks if system administrator has signed the file
<?php
$file = '/usr/local/sbin/some_binary';
$signature = xattr_get($file, 'Root signature', XATTR_ROOT);
/* ... check if $signature is valid ... */
?>