ftp_cdup

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

ftp_cdup切换到当前目录的父目录

说明

ftp_cdup(FTP\Connection $ftp): bool

切换目录至当前目录的父目录 (上级目录)。

参数

ftp

FTP\Connection 实例。

返回值

成功时返回 true, 或者在失败时返回 false

更新日志

版本 说明
8.1.0 现在 ftp 参数接受 FTP\Connection 实例,之前接受 资源(resource)

范例

示例 #1 ftp_cdup() 例子

<?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);
?>

参见

add a note

User Contributed Notes 3 notes

up
1
Anonymous
14 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
13 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
-4
tom p
17 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, "~"); ?>
To Top