Is it necessary to include session_start() multiple times in PHP scripts, or is once at the beginning sufficient?

It is only necessary to include `session_start()` once at the beginning of a PHP script. This function starts a new session or resumes the existing session, and it should be included before any output is sent to the browser. 

<?php
session_start();

// Rest of the PHP code goes here
?>

Keywords

session_start PHP scripts multiple times once beginning

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