Understanding the PHP Function ftp_rename()

The ftp_rename() function is a built-in PHP function that renames a file or directory on an FTP server. In this article, we'll discuss the function in detail and provide you with a comprehensive guide to using it in your PHP projects.

What is ftp_rename()?

The ftp_rename() function is a PHP built-in function that renames a file or directory on an FTP server. The function takes three parameters:

  1. ftp_stream: The connection identifier returned by the ftp_connect() function.
  2. oldname: The current name of the file or directory to rename.
  3. newname: The new name to give to the file or directory.

The function returns true on success and false on failure.

Syntax of ftp_rename()

The syntax of the ftp_rename() function is as follows:

bool ftp_rename ( resource $ftp_stream , string $oldname , string $newname )

The ftp_rename() function takes three required parameters, ftp_stream, oldname, and newname. The ftp_stream parameter is the connection identifier returned by the ftp_connect() function, oldname is the current name of the file or directory to rename, and newname is the new name to give to the file or directory.

Usage of ftp_rename()

To use the ftp_rename() function, you first need to establish a connection to the FTP server using the ftp_connect() function. Here's an example:

<?php

// Set up an FTP connection
$conn = ftp_connect('ftp.example.com');

// Login with your FTP credentials
ftp_login($conn, 'username', 'password');

// Rename the file or directory
if (ftp_rename($conn, '/public_html/oldname.txt', '/public_html/newname.txt')) {
    echo "File renamed successfully.\n";
} else {
    echo "File rename failed.\n";
}

// Close the FTP connection
ftp_close($conn);

In this example, we establish a connection to the FTP server using the ftp_connect() function. Then we log in using our FTP credentials using the ftp_login() function. We rename the file or directory using the ftp_rename() function and output a message indicating whether the operation was successful. Finally, we close the FTP connection using the ftp_close() function.

Error handling in ftp_rename()

It's important to handle errors properly when using the ftp_rename() function. If the function returns false, it means that the operation was unsuccessful. Here's an example of how to handle errors:

<?php

if (!ftp_rename($conn, '/public_html/oldname.txt', '/public_html/newname.txt')) {
    echo "Failed to rename file.\n";
}

ftp_close($conn);

By handling errors appropriately and checking the return value of the function, you can ensure the success of your FTP operations using the ftp_rename() function.

Conclusion

In conclusion, the ftp_rename() function is a useful tool for renaming files or directories on an FTP server. With proper usage and error handling, this function can be a valuable asset in your PHP projects.


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