How can proper coding practices help prevent header modification errors in PHP?

Improper coding practices can lead to header modification errors in PHP, such as attempting to modify headers after they have already been sent to the browser. To prevent these errors, it is important to ensure that header modifications are done before any output is sent to the browser. This can be achieved by following best practices like using output buffering or structuring your code in a way that headers are set before any content is echoed. 

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

// Set headers before any output
header('Content-Type: text/html');

// Output content
echo 'Hello, World!';

ob_end_flush(); // Flush the output buffer
?>

Keywords

header modification PHP coding error prevention security vulnerabilities best practices

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