Tutorial HTML Tidy
function html_tidy( $input_html, $indent = "true", $no_body_tags = "true", $fix = "true" ) {
ob_start( );
$tidy = new tidy;
$config = array( 'indent' => $indent, 'output-xhtml' => true, 'wrap' => 200, 'clean' => $fix, 'show-body-only' => $no_body_tags );
$tidy->parseString( $input_html, $config, 'utf8' );
$tidy->cleanRepair( );
$input = $tidy;
return $input;
}