ftp_cdup

(PHP 4, PHP 5, PHP 7, PHP 8)

ftp_cdupChanges to the parent directory

Description

ftp_cdup(FTP\Connection $ftp): bool

Changes to the parent directory.

Parameters

ftp

An FTP\Connection instance.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.1.0 The ftp parameter expects an FTP\Connection instance now; previously, a resource was expected.

Examples

Example #1 ftp_cdup() example

<?php
// set up basic connection
$ftp = ftp_connect($ftp_server);

// login with username and password
$login_result = ftp_login($ftp, $ftp_user_name, $ftp_user_pass);

// change the current directory to html
ftp_chdir($ftp, 'html');

echo
ftp_pwd($ftp); // /html

// return to the parent directory
if (ftp_cdup($ftp)) {
echo
"cdup successful\n";
} else {
echo
"cdup not successful\n";
}

echo
ftp_pwd($ftp); // /

ftp_close($ftp);
?>

See Also

  • ftp_chdir() - Changes the current directory on a FTP server
  • ftp_pwd() - Returns the current directory name

add a note

User Contributed Notes 3 notes

up
1
Anonymous
16 years ago
The below example doesn't seem to work on a windows based machine so I use this trick instead

<?php

$aPath
= explode('/',ftp_pwd($conn_id));
$sHomeDir = str_repeat('../', count($aPath) - 1);

ftp_chdir($conn_id, $sHomeDir);

?>
up
0
rowie at free dot fr
15 years ago
ftp_cdup can only up to the parent and if you want test a directory that is not a child then you can't with ftp_cdup ;)
up
-5
tom p
18 years ago
I used a recursive cdup function until i realised i could navigate to the user's home directory from any location using ~:

<? ftp_chdir($connid, "~"); ?>
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