What are the potential challenges of using sequential IDs in PHP for navigation purposes?

One potential challenge of using sequential IDs in PHP for navigation purposes is that it can expose sensitive information about the total number of items in a database, making it easier for malicious users to guess other IDs. To address this issue, you can use a unique identifier (like a UUID) instead of sequential IDs to ensure better security.

// Generating a UUID in PHP
$uuid = uniqid();
echo $uuid;