Session: How to Clear a Session
To clear session state, stop tracking entities, and remove all pending commands,
use the clear
method from the advanced
session operations.
Syntax
public function clear(): void;
Example
$employee = new Employee();
$employee->setFirstName("John");
$employee->setLastName("Doe");
$session->store($employee);
$session->advanced()->clear();
$session->saveChanges(); // nothing will hapen