PHP ftp_cdup () function

Definition and Usage

ftp_cdup () function to change the current directory to the parent directory on the FTP server.

If successful, the function returns TRUE. If it fails, FALSE is returned.

grammar

ftp_cdup(ftp_connection)

 

参数	描述
ftp_connection	必需。规定要使用的 FTP 连接。

 

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Examples

<?php
$conn = ftp_connect("ftp.testftp.com") or die("Could not connect");
ftp_login($conn,"admin","ert456");

//Outputs the current directory
echo "Dir: ".ftp_pwd($conn);
echo "<br />";
//Change to the images directory
ftp_chdir($conn,"images");
echo "Dir: ".ftp_pwd($conn);
echo "<br />";
//Change current directory to parent directory
ftp_cdup($conn);
echo "Dir: ".ftp_pwd($conn);

ftp_close($ftp_server);
?>

　　

The above will output:

Dir: /
Dir: /images
Dir: /

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