What is the difference between uploading files via HTTP and FTP in PHP, and what are the best practices for each method?

When uploading files via HTTP in PHP, the file is sent as part of a form submission using the POST method. This method is simpler to implement but has limitations on file size and type. On the other hand, uploading files via FTP allows for larger file sizes and more control over the transfer process. Best practices for uploading files via HTTP include validating file types and sizes on the server side, while for FTP, securely handling credentials and ensuring proper file permissions are important. 

// Uploading a file via HTTP
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    if (isset($_FILES['file'])) {
        $target_dir = "uploads/";
        $target_file = $target_dir . basename($_FILES["file"]["name"]);
        if (move_uploaded_file($_FILES["file"]["tmp_name"], $target_file)) {
            echo "File uploaded successfully";
        } else {
            echo "Error uploading file";
        }
    }
}

// Uploading a file via FTP
$ftp_server = "ftp.example.com";
$ftp_username = "username";
$ftp_password = "password";
$local_file = "local_file.txt";
$remote_file = "remote_file.txt";

$conn_id = ftp_connect($ftp_server);
$login_result = ftp_login($conn_id, $ftp_username, $ftp_password);

if (ftp_put($conn_id, $remote_file, $local_file, FTP_BINARY)) {
    echo "File uploaded via FTP successfully";
} else {
    echo "Error uploading file via FTP";
}

ftp_close($conn_id);

Keywords

file upload HTTP FTP best practices PHP

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