List all Permalink Manager redirects

pm_debug_redirects.php

<?php

function pm_debug_redirects() {
	if(isset($_GET['debug_urls'])) {
		global $permalink_manager, $permalink_manager_uris, $permalink_manager_redirects;

		if(!empty($permalink_manager_uris)) {
			$uri_post_class = $permalink_manager->functions['uri-functions-post'];
			$uri_tax_class = $permalink_manager->functions['uri-functions-tax'];
			$home_url = Permalink_Manager_Helper_Functions::get_permalink_base();

			remove_filter( '_get_page_link', array($uri_post_class, 'custom_post_permalinks'), 99, 2);
			remove_filter( 'page_link', array($uri_post_class, 'custom_post_permalinks'), 99, 2);
			remove_filter( 'post_link', array($uri_post_class, 'custom_post_permalinks'), 99, 2);
			remove_filter( 'post_type_link', array($uri_post_class, 'custom_post_permalinks'), 99, 2);
			remove_filter( 'attachment_link', array($uri_post_class, 'custom_post_permalinks'), 99, 2);
			remove_filter( 'term_link', array($uri_tax_class, 'custom_tax_permalinks'), 999, 2 );
			remove_filter( 'category_link', array($uri_tax_class, 'custom_tax_permalinks'), 999, 2 );
			remove_filter( 'tag_link', array($uri_tax_class, 'custom_tax_permalinks'), 999, 2 );

			$html = "<table border=\"1\">";
			$html .= sprintf("<thead><tr><th>%s</th><th>%s</th></tr></thead>", 'Original URL', 'Permalink Manager URL');

			// Native redirects
			foreach($permalink_manager_uris as $element_id => $uri) {
				if(is_numeric($element_id)) {
					$original_permalink = user_trailingslashit(get_permalink($element_id));
					$custom_permalink = user_trailingslashit($home_url . "/" . $uri);
				} else {
					$term_id = preg_replace("/[^0-9]/", "", $element_id);
					$term = get_term($term_id);

					if(empty($term->taxonomy)) { continue; }

					$original_permalink = user_trailingslashit(get_term_link($term->term_id, $term->taxonomy));
					$custom_permalink = user_trailingslashit($home_url . "/" . $uri);
				}

				if($original_permalink == $custom_permalink && $original_permalink !== '/') { continue; }

				$html .= sprintf("<tr><td>%s</td><td>%s</td></tr>", $original_permalink, $custom_permalink);
			}
		}

		// Custom redirects
		if($permalink_manager_redirects) {
			$html .= sprintf("<tr><td colspan=\"2\"><strong>%s</strong></td></tr>", 'Custom redirects URLs');

			foreach($permalink_manager_redirects as $element_id => $redirects) {
				if(empty($permalink_manager_uris[$element_id])) { continue; }
				$custom_permalink = user_trailingslashit($home_url . "/" . $permalink_manager_uris[$element_id]);

				if(is_array($redirects)) {
					$redirects = array_values($redirects);
					$redirects_count = count($redirects);

					foreach($redirects as $index => $redirect) {
						$redirect_url = user_trailingslashit($home_url . "/" . $redirect);

						if($index == 0) {
							$html .= sprintf("<tr><td>%s</td><td rowspan=\"%d\">%s</td></tr>", $redirect_url, $redirects_count, $custom_permalink);
						} else {
							$html .= sprintf("<tr><td>%s</td></tr>", $redirect_url);
						}
					}
				}
			}
		}

		$html .= "</table>";

		echo $html;
		die();
	}
}
add_action('init', 'pm_debug_redirects');