Debug rewrite rules on Wordpress

debug_rewrite_rules_wp

// Debug Rewrite Rules in Wordpress
function debug_rewrite_rules() {
	global $wp, $template, $wp_rewrite;

	echo '<pre>';
	echo 'Request: ';
	echo empty($wp->request) ? "None" : esc_html($wp->request) . PHP_EOL;
	echo 'Matched Rewrite Rule: ';
	echo empty($wp->matched_rule) ? None : esc_html($wp->matched_rule) . PHP_EOL;
	echo 'Matched Rewrite Query: ';
	echo empty($wp->matched_query) ? "None" : esc_html($wp->matched_query) . PHP_EOL;
	echo 'Loaded Template: ';
	echo basename($template);
	echo '</pre>' . PHP_EOL;

	echo '<pre>';
	print_r($wp_rewrite->rules);
	echo '</pre>';
	}
	
add_action( 'wp_head', 'debug_rewrite_rules' );