Why is it not possible or practical to retrieve the full path of an uploaded file in PHP?

It is not possible or practical to retrieve the full path of an uploaded file in PHP for security reasons. Exposing the full path could potentially reveal sensitive information about the server's file structure, which could be exploited by malicious users. To work around this limitation, you can use the `move_uploaded_file` function to move the uploaded file to a desired directory and then work with the file using its new path.

// Retrieve the temporary file path
$uploadedFile = $_FILES['file']['tmp_name'];

// Define the destination directory
$destination = 'uploads/';

// Generate a unique filename
$filename = uniqid() . '_' . $_FILES['file']['name'];

// Move the uploaded file to the destination directory
move_uploaded_file($uploadedFile, $destination . $filename);

// Now you can work with the file using its new path
$newFilePath = $destination . $filename;