What is the best practice for setting sessions in PHP scripts to avoid "headers already sent" errors?
When setting sessions in PHP scripts, it's important to ensure that no output is sent to the browser before calling the session_start() function. This is because sessions use cookies to store session IDs, and cookies must be set in the HTTP header before any content is sent to the browser. To avoid "headers already sent" errors, make sure to call session_start() at the beginning of your script before any output is generated.
<?php
// Start the session before any output
session_start();
// Your PHP code here
?>
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