array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'function.eio-link.php', 1 => 'eio_link', ), 'up' => array ( 0 => 'ref.eio.php', 1 => 'Eio 函数', ), 'prev' => array ( 0 => 'function.eio-init.php', 1 => 'eio_init', ), 'next' => array ( 0 => 'function.eio-lstat.php', 1 => 'eio_lstat', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/eio/functions/eio-link.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PECL eio >= 0.0.1dev)
eio_link — Create a hardlink for file
$path
,$new_path
,$pri
= EIO_PRI_DEFAULT,$callback
= NULL,$data
= NULL
eio_link() creates a hardlink
new_path
for a file specified by
path
.
path
Source file path.
new_path
Target file path.
pri
请求的优先级:EIO_PRI_DEFAULT
,EIO_PRI_MIN
,EIO_PRI_MAX
或 null
。如果是
null
,pri
将设为
EIO_PRI_DEFAULT
。
callback
callback
函数在请求完成时被调用。其应匹配一下原型:
void callback(mixed $data, int $result[, resource $req]);
data
传递给请求的用户数据。
result
针对请求的结果的值。通常是相应的系统调用返回的值。
req
可选的请求资源,可被 eio_get_last_error() 之类的函数使用。
data
Arbitrary variable passed to callback
.
示例 #1 eio_link() example
<?php
$filename = dirname(__FILE__)."/symlink.dat";
touch($filename);
$link = dirname(__FILE__)."/symlink.link";
$hardlink = dirname(__FILE__)."/hardlink.link";
function my_hardlink_cb($data, $result) {
global $link, $filename;
var_dump(file_exists($data) && !is_link($data));
@unlink($data);
eio_symlink($filename, $link, EIO_PRI_DEFAULT, "my_symlink_cb", $link);
}
function my_symlink_cb($data, $result) {
global $link, $filename;
var_dump(file_exists($data) && is_link($data));
if (!eio_readlink($data, EIO_PRI_DEFAULT, "my_readlink_cb", NULL)) {
@unlink($link);
@unlink($filename);
}
}
function my_readlink_cb($data, $result) {
global $filename, $link;
var_dump($result);
@unlink($link);
@unlink($filename);
}
eio_link($filename, $hardlink, EIO_PRI_DEFAULT, "my_hardlink_cb", $hardlink);
eio_event_loop();
?>
以上示例的输出类似于:
bool(true) bool(true) string(%d) "%ssymlink.dat"