What are the potential pitfalls or drawbacks of storing PHP object instances in sessions for reuse across multiple pages?

Storing PHP object instances in sessions can lead to increased memory usage and potential serialization issues. It can also make the code less maintainable and harder to debug. To mitigate these drawbacks, consider storing only necessary data in sessions and reconstructing the object instances when needed instead of storing the entire objects. 

// Example of storing only necessary data in sessions and reconstructing object instances when needed
session_start();

// Store necessary data in session
$_SESSION['user_id'] = $user->getId();

// Reconstruct object instance when needed
$user = new User($_SESSION['user_id']);

Keywords

PHP object instances sessions serialization memory consumption

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