eio_link

(PECL eio >= 0.0.1dev)

eio_link — Create a hardlink for file

Description

eio_link(
    string $path,
    string $new_path,
    int $pri = EIO_PRI_DEFAULT,
    callable $callback = NULL,
    mixed $data = NULL
): resource

eio_link() creates a hardlink new_path for a file specified by path.

Parameters

path

Source file path.

new_path

Target file path.

pri

The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or null. If null passed, pri internally is set to EIO_PRI_DEFAULT.

callback

callback function is called when the request is done. It should match the following prototype:

void callback(mixed $data, int $result[, resource $req]);

data: is custom data passed to the request.
result: request-specific result value; basically, the value returned by corresponding system call.
req: is optional request resource which can be used with functions like eio_get_last_error().

data

Arbitrary variable passed to callback.

Return Values

Examples

Example #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();
?>

The above example will output something similar to:

bool(true)
bool(true)
string(%d) "%ssymlink.dat"

eio_link

Description

Parameters

Return Values

Examples

See Also