Are there any best practices or tools recommended for ensuring proper formatting and validation of PHP-generated HTML content, especially when dealing with tables?

Proper formatting and validation of PHP-generated HTML content, especially when dealing with tables, can be ensured by using PHP libraries like PHP Simple HTML DOM Parser or PHP DOMDocument for parsing and manipulating HTML. These tools can help in creating well-structured and valid HTML code by handling table elements and their attributes effectively.

// Example using PHP Simple HTML DOM Parser
include('simple_html_dom.php');

$html = file_get_html('http://www.example.com');

// Manipulate table elements
$table = $html->find('table', 0);
$table->setAttribute('class', 'table-class');

// Output the modified HTML
echo $html;