(PHP 4, PHP 5)
ftp_cdup — 切换到当前目录的父目录
切换目录至当前目录的父目录 (上级目录)。
FTP 连接的标识符。
成功时返回 TRUE， 或者在失败时返回 FALSE.
Example #1 ftp_cdup() 例子
<?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
";
} else {
echo "cdup not successful
";
}
echo ftp_pwd($conn_id); // /
ftp_close($conn_id);
?>