(PHP 5, PECL tidy >= 0.5.2)
tidy_config_count — Returns the Number of Tidy configuration errors encountered for specified document
tidy_config_count() returns the number of errors encountered in the configuration of the specified tidy object .
Example #1 tidy_config_count() example
<?php
$html = '<p>test</I>';
$config = array('doctype' => 'bogus');
$tidy = tidy_parse_string($html, $config);
/* This outputs 1, because 'bogus' isn't a valid doctype */
echo tidy_config_count($tidy);
?>