Can HTML code be written within PHP tags without causing errors, and if so, what is the best practice?

When writing HTML code within PHP tags, it is essential to ensure that the HTML code is properly formatted and enclosed within echo statements to avoid syntax errors. The best practice is to separate the PHP logic from the HTML markup by using PHP to generate the dynamic content and then outputting it within the HTML structure.

<?php
// PHP logic
$dynamic_content = "Hello, World!";

// Output HTML with dynamic content
echo "<html>";
echo "<head><title>PHP and HTML</title></head>";
echo "<body>";
echo "<h1>$dynamic_content</h1>";
echo "</body>";
echo "</html>";
?>