How does the placement of the session_start() function impact the passing of session data in PHP?

The placement of the session_start() function impacts the passing of session data in PHP because it needs to be called before any output is sent to the browser. If session_start() is called after any output, it will result in an error or the session data not being passed correctly. To ensure proper passing of session data, always place session_start() at the beginning of your PHP script, before any HTML or text output. 

<?php
session_start();

// Rest of your PHP code here
?>

Keywords

session_start session data PHP placement passing

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