Why is it important to include session_start() at the beginning of PHP scripts that use sessions?

It is important to include session_start() at the beginning of PHP scripts that use sessions because it initializes a session or resumes an existing one. This function must be called before any output is sent to the browser to ensure that session variables can be accessed and stored correctly throughout the script execution. 

<?php
session_start();

// Rest of the PHP script
?>

Keywords

session_start PHP scripts sessions security cookies

Related Questions