How can you ensure that the header() function in PHP is placed correctly to avoid header modification errors?

To avoid header modification errors in PHP, ensure that the header() function is placed before any output is sent to the browser. This means that the header() function should be called before any HTML, text, or whitespace is echoed or printed. By placing the header() function at the beginning of your PHP script, you can ensure that it is executed before any headers are sent to the browser, preventing any header modification errors. 

<?php
// Place the header() function at the beginning of the script
header("Content-Type: text/html");

// Your PHP code here
echo "This is my PHP script";
?>

Keywords

header() PHP function placement header modification errors error prevention

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