ftp_cdup

(PHP 4, PHP 5)

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

성공할 경우 TRUE를, 실패할 경우 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

ftp_chdir

ftp_alloc

Last updated: Fri, 24 Jul 2009

add a note User Contributed Notes
ftp_cdup

rowie at free dot fr
11-Mar-2009 10:30


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 ;)

rayfung at ioptional dot com
18-Jan-2009 04:50


i think ftp_cdup can make it more nice





function dirExists($ftp, $directory = '.') {


    if (@ftp_chdir($ftp, $directory)) {


        ftp_cdup($ftp);   


        return TRUE;


    } return FALSE;


}

Anonymous
07-May-2008 04:01


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);



?>

tom p
08-Dec-2005 12:01


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, "~"); ?>

add a note

ftp_chdir

ftp_alloc

Last updated: Fri, 24 Jul 2009