How can the order of HTML output and header modification be optimized to avoid errors in PHP?

To avoid errors in PHP related to output being sent before header modification, it is important to ensure that no content is echoed or printed before calling functions like header(). To optimize the order of HTML output and header modification, it is recommended to handle all header modifications at the beginning of the script before any HTML content is generated. 

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

// Generate HTML content after header modifications
echo "<html>";
echo "<head>";
echo "<title>Optimized Output</title>";
echo "</head>";
echo "<body>";
echo "<h1>Hello, World!</h1>";
echo "</body>";
echo "</html>";
?>

Keywords

HTML output header modification optimization errors PHP

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