PHP ftp_cdup () function
Complete PHP FTP Reference 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, it returns FALSE.
grammar
ftp_cdup(ftp_connection)
| 参数 | 描述 |
|---|---|
| ftp_connection | 必需。规定要使用的 FTP 连接。 |
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);
?>
$conn = ftp_connect("ftp.testftp.com") or die("Could not connect");
ftp_login($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 code above will output:
Dir: /
Dir: /images
Dir: /
Dir: /images
Dir: /
Complete PHP FTP Reference