How to rename and delete files on FTP server using PHP

How to rename and delete files on FTP server using PHP

Introduction:
FTP (File Transfer Protocol) is widely used for file transfer between clients and servers. In PHP, we can use the FTP programming library (FTP extension) to communicate with the FTP server and implement some operations, such as renaming and deleting files. This article will introduce how to use PHP and FTP extensions to implement the function of renaming and deleting files on an FTP server, and provide corresponding code examples.

1. Connect to the FTP server
Before performing FTP operations, we first need to connect to the FTP server. Use PHP's ftp_connect() function to establish a connection to the FTP server. This function returns an FTP connection resource, which we need to save in a variable for subsequent use.

// FTP服务器的登录信息
$ftpServer = 'ftp.example.com';
$ftpUsername = 'username';
$ftpPassword = 'password';

// 连接到FTP服务器
$ftpConnection = ftp_connect($ftpServer) or die("无法连接到FTP服务器");

2. Log in to the FTP server
After connecting to the FTP server, we need to log in with the correct username and password to perform further operations. You can log in to the FTP server using PHP's ftp_login() function.

// 登录到FTP服务器
$loginSuccessful = ftp_login($ftpConnection, $ftpUsername, $ftpPassword);
if ($loginSuccessful) {
    echo "登录成功";
} else {
    echo "登录失败";
}

3. Rename files
To rename files on the FTP server, we need to know the name and path of the original file, as well as the new name to be changed. Using PHP's ftp_rename() function, we can rename files.

// 原始文件名和路径
$oldFileName = "/path/to/old/file.txt";

// 新文件名
$newFileName = "/path/to/new/file.txt";

// 重命名文件
$fileRenamed = ftp_rename($ftpConnection, $oldFileName, $newFileName);
if ($fileRenamed) {
    echo "文件重命名成功";
} else {
    echo "文件重命名失败";
}

4. Delete files
To delete files on the FTP server, we only need to provide the file name and path to be deleted. Using PHP's ftp_delete() function, we can delete files.

// 要删除的文件名和路径
$fileNameToDelete = "/path/to/file.txt";

// 删除文件
$fileDeleted = ftp_delete($ftpConnection, $fileNameToDelete);
if ($fileDeleted) {
    echo "文件删除成功";
} else {
    echo "文件删除失败";
}

5. Close the FTP connection
After completing the file operation, in order to release resources, we need to close the connection with the FTP server. The connection can be closed using PHP's ftp_close() function.

// 关闭FTP连接
ftp_close($ftpConnection);

Summary:
This article introduces how to use PHP and FTP extensions to achieve the function of renaming and deleting files on the FTP server. We can accomplish these operations by connecting to the FTP server, logging into the FTP server, renaming files, and deleting files. In practical applications, we can combine other functions as needed, such as uploading files or downloading files, to achieve more complex file transfer operations. By mastering these techniques, we can interact with files on the FTP server more efficiently.

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