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wp-content/plugins/debloat/inc/admin/cache.php

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+<?php
+
+namespace Sphere\Debloat\Admin;
+use Sphere\Debloat\Plugin;
+
+/**
+ * Cache clear, stats and similar for admin area.
+ * 
+ * @author  asadkn
+ * @since   1.0.0
+ */
+class Cache
+{
+	protected $deleting = false;
+
+	public function init()
+	{
+		$this->register_clear_hooks();
+	}
+
+	/**
+	 * Register hooks to clear cache.
+	 *
+	 * @return void
+	 */
+	public function register_clear_hooks()
+	{
+		/**
+		 * Use this hook to clear caches externally.
+		 */
+		add_action('debloat/empty_caches', [$this, 'empty']);
+
+		/**
+		 * Other plugin hooks to empty cache on.
+		 */ 
+		$hooks = [
+			// WP Rocket.
+			'after_rocket_clean_domain',
+
+			// W3 Total Cache.
+			'w3tc_flush_all',
+
+			// SGF plugin font cache delete.
+			'sgf/after_delete_cache',
+		];
+
+		foreach ($hooks as $hook) {
+			add_action($hook, [$this, 'empty']);
+		}
+	}
+
+	/**
+	 * Get all the debloat cache transients.
+	 *
+	 * @return array
+	 */
+	public function get_transients()
+	{
+		global $wpdb;
+
+		return (array) $wpdb->get_results(
+			"SELECT `option_name` FROM {$wpdb->options} WHERE `option_name` LIKE '_transient_debloat_sheet_cache_%'",
+			ARRAY_A
+		);
+	}
+
+	/**
+	 * Delete all the debloat cache transients.
+	 *
+	 * @return void
+	 */
+	protected function delete_transients()
+	{
+		foreach ($this->get_transients() as $transient) {
+			$transient = str_replace('_transient_', '', $transient['option_name']);
+			\delete_transient($transient);
+		}
+	}
+
+	/**
+	 * Delete all types of caches.
+	 *
+	 * @return void
+	 */
+	public function empty()
+	{
+		// Already clearing the caches. Needed as we hook into plugins clear methods,
+		// but also call them ourselves on cache clear. 
+		if ($this->deleting) {
+			return;
+		}
+
+		// One of the hooks set via register_clear_hooks() may fire.
+		$this->deleting = true;
+
+		$this->delete_transients();
+
+		// Delete files cache.
+		Plugin::file_cache()->delete_cache('js');
+		Plugin::file_cache()->delete_cache('css');
+
+		// Clear cache plugins.
+		$this->empty_cache_plugins();
+
+		$this->deleting = false;
+	}
+
+	/**
+	 * Empty external caches from plugins and hosts.
+	 *
+	 * @return void
+	 */
+	protected function empty_cache_plugins()
+	{
+		// WP Super Cache.
+		if (function_exists('wp_cache_clear_cache')) {
+			wp_cache_clear_cache(
+				is_multisite() ? get_current_blog_id() : 0
+			);
+		}
+
+		// W3 Total Cache.
+		if (function_exists('w3tc_pgcache_flush')) {
+			w3tc_pgcache_flush();
+		}
+
+		// WP Rocket.
+		if (function_exists('rocket_clean_domain')) {
+			rocket_clean_domain();
+		}
+
+		// WP Fastest Cache.
+		if (function_exists('wpfc_clear_all_cache')) {
+			wpfc_clear_all_cache();
+		}
+
+		// Swift Performance plugin.
+		if (class_exists('\Swift_Performance_Cache') && is_callable(['\Swift_Performance_Cache', 'clear_all_cache'])) {
+			\Swift_Performance_Cache::clear_all_cache();
+		}
+		
+		// LiteSpeed Cache.
+		if (class_exists('\LiteSpeed_Cache_API') && is_callable(['\LiteSpeed_Cache_API', 'purge_all'])) {
+			\LiteSpeed_Cache_API::purge_all();
+		}
+
+		// Cache Enabler.
+		if (class_exists('\Cache_Enabler') && is_callable(['\Cache_Enabler', 'clear_total_cache'])) {
+			\Cache_Enabler::clear_total_cache();
+		}
+
+		// Comet cache.
+		if (class_exists('\comet_cache') && is_callable(['\comet_cache', 'clear'])) {
+			\comet_cache::clear();
+		}
+
+		// RT Nginx Helper plugin.
+		if (defined('NGINX_HELPER_BASENAME')) {
+			do_action('rt_nginx_helper_purge_all');
+		}
+
+		// Hummingbird 
+		if (class_exists('\Hummingbird\WP_Hummingbird') && is_callable(['\Hummingbird\WP_Hummingbird', 'flush_cache'])) {
+			\Hummingbird\WP_Hummingbird::flush_cache();
+		}
+
+		// Pagely.
+		if (class_exists('\PagelyCachePurge') && is_callable(['\PagelyCachePurge', 'purgeAll'])) {
+			\PagelyCachePurge::purgeAll();
+		}
+
+		// WPEngine
+		if (class_exists('\WpeCommon')) {
+			is_callable(['\WpeCommon', 'purge_memcached']) && \WpeCommon::purge_memcached();
+			is_callable(['\WpeCommon', 'purge_varnish_cache']) && \WpeCommon::purge_varnish_cache();
+		}
+
+		// SiteGround.
+		if (function_exists('sg_cachepress_purge_cache')) {
+			sg_cachepress_purge_cache();
+		}
+	}
+}