What are common causes of session_start() errors in PHP scripts?

Common causes of session_start() errors in PHP scripts include calling session_start() after output has already been sent to the browser, not having the session extension enabled in PHP configuration, or issues with session.save_path. To solve this issue, make sure to call session_start() at the beginning of your script before any output is sent, ensure that the session extension is enabled in php.ini, and check the session.save_path to make sure it is writable. 

<?php
// Start the session before any output is sent
session_start();

// Your PHP code goes here
?>

Keywords

session_start PHP scripts errors causes debugging

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