What are the best practices for handling sessions in PHP when including different files with output before starting the session?

When including different files with output before starting the session in PHP, it is important to ensure that no output is sent to the browser before starting the session. This is because once output is sent, PHP headers cannot be modified, leading to potential session start errors. To solve this issue, you can use output buffering to capture any output before starting the session. 

<?php
ob_start(); // Start output buffering

// Include files with output
include 'file1.php';
include 'file2.php';

ob_end_clean(); // Clean the output buffer without sending it to the browser

session_start(); // Start the session
// Rest of your code here
?>

Keywords

session_start output_buffering ob_start ob_end_flush include

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