How can the order of code execution, such as sending content to the user before starting a session, affect the assignment of session IDs in PHP?

The order of code execution can affect the assignment of session IDs in PHP because session_start() must be called before any output is sent to the browser. If content is sent to the user before starting a session, PHP may not be able to set the session ID properly, leading to potential session-related issues. To solve this, ensure that session_start() is called at the beginning of the script, before any output is generated. 

<?php
session_start();

// Code to send content to the user goes here

Keywords

session PHP code execution content session ID

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