The ftp_cdup() function changes the current directory to the parent directory.
Syntax
ftp_cdup(con);
Parameters
con − The FTP connection
Return
The ftp_cdup() function returns TRUE on success or FALSE on failure.
Example
The following is an example wherein we are updating the current directory to parent directory −
<?php
$ftp_server="192.168.0.4";
$ftp_user="amit";
$ftp_pass="tywg61gh";
$con = ftp_connect($ftp_server);
$res = ftp_login($con, $ftp_user, $ftp_pass);
ftp_chdir($con, 'demo');
echo ftp_pwd($con); /
if (ftp_cdup($con)) {
echo "Directory changed!\n";
} else {
echo "Directory change not successful!\n";
}
echo ftp_pwd($con);
ftp_close($con);
?>