In PHP, how can the parsing of code be affected by the structure of HTML tags in the output?

When parsing code in PHP, the structure of HTML tags in the output can affect how the code is processed. If the HTML tags are not properly formatted or closed, it can lead to errors or unexpected behavior in the parsing process. To solve this issue, it is important to ensure that the HTML tags are correctly structured and closed in the output to avoid any parsing errors.

<?php
$output = "<div><p>Hello, world!</div>"; // Incorrectly closed div tag

// Fix the HTML structure by properly closing the div tag
$output = "<div><p>Hello, world!</p></div>";

// Proceed with parsing the corrected output
// Code to parse the output goes here
?>