How can validating HTML/XHTML code using tools like W3C Validator improve PHP output display?

Validating HTML/XHTML code using tools like W3C Validator can improve PHP output display by ensuring that the HTML markup is correct and follows the standards set by the W3C. This can help in identifying any errors or inconsistencies in the HTML code that may affect the way the PHP output is displayed in the browser. By fixing these issues, the PHP output will be rendered more accurately and consistently across different browsers and devices. 

<?php
// PHP code here

// HTML code here
?>

Keywords

HTML XHTML W3C Validator validation PHP output display

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