What are the best practices for structuring PHP scripts to prevent header modification errors?

When working with PHP scripts, it is important to ensure that headers are not modified after they have already been sent. To prevent header modification errors, it is recommended to structure your PHP scripts in a way that ensures headers are only modified before any content is output to the browser. One common practice is to place all header modification code at the beginning of the script, before any HTML or whitespace. 

<?php
// Prevent header modification errors by placing header modification code at the beginning of the script
header("Content-Type: text/html");

// Your PHP code here
echo "Hello, world!";
?>

Keywords

header modification PHP scripts structuring errors prevention

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