What best practices should be followed to ensure that headers are set correctly in PHP scripts?

To ensure that headers are set correctly in PHP scripts, it is important to set them before any output is sent to the browser. This means that headers should be set at the very beginning of the script, before any HTML or other content. Additionally, it's important to avoid setting duplicate headers, as this can cause conflicts and unexpected behavior in the script. 

<?php
// Set the header before any output
header('Content-Type: text/html');

// Your PHP code here
?>

Keywords

HTTP headers PHP scripts Content-Type header function security vulnerabilities

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