$target_dir = "uploads/"; $target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]); if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) { echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded."; } else { echo "Sorry, there was an error uploading your file."; }In this code, the uploaded file is saved in a directory called "uploads". The code checks if the file has been successfully uploaded using the move_uploaded_file() function and displays a message depending on the outcome. The package library that can be used for PHP form upload is the "File Upload" package, which provides a set of classes and tools for handling file uploads in PHP. This package helps developers to easily implement file upload functionality in their PHP applications.