Edit Report a Bug

ftp_cdup

(PHP 4, PHP 5, PHP 7)

ftp_cdup — Changes to the parent directory

설명

bool ftp_cdup ( resource $ftp_stream )

Changes to the parent directory.

인수

ftp_stream: The link identifier of the FTP connection.

반환값

성공 시 TRUE를, 실패 시 FALSE를 반환합니다.

예제

Example #1 ftp_cdup() example


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

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

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

echo ftp_pwd($conn_id); // /html 

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

echo ftp_pwd($conn_id); // /

ftp_close($conn_id);
?>

참고

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

down

tom p ¶

19 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, "~"); ?>

down

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 ;)

down

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);

?>

add a note