What are some best practices for passing data between PHP pages using GET parameters?

When passing data between PHP pages using GET parameters, it is important to properly sanitize and validate the data to prevent security vulnerabilities. One best practice is to use the urlencode() function to encode the data before appending it to the URL. Additionally, always validate and sanitize the data on the receiving page to ensure it is safe to use.

// Sending page
$data = "example data";
$encoded_data = urlencode($data);
<a href="page2.php?data=<?php echo $encoded_data; ?>">Go to Page 2</a>

// Receiving page (page2.php)
if(isset($_GET['data'])){
    $received_data = urldecode($_GET['data']);
    // Sanitize and validate the received data before using it
}