What is the recommended approach for handling sessions in PHP to avoid HTML validation errors?

When handling sessions in PHP, it is important to start the session before any HTML output is sent to the browser. This will prevent any "headers already sent" errors which can cause HTML validation issues. To ensure proper session handling, always start the session at the beginning of your PHP script before any HTML or whitespace. 

<?php
// Start the session at the beginning of the script
session_start();

// Your PHP code here

// Output HTML content after session_start()
?>
<!DOCTYPE html>
<html>
<head>
    <title>Session Handling Example</title>
</head>
<body>
    <h1>Welcome to our website!</h1>
    <p>Session handling is important for user authentication and data persistence.</p>
</body>
</html>

Keywords

sessions PHP HTML validation errors session handling recommended approach

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