wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.3.1, at wp-optimize.php

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1	<?php
2	/**
3	Plugin Name: WP-Optimize - Clean, Compress, Cache
4	Plugin URI: https://getwpo.com
5	Description: WP-Optimize makes your site fast and efficient. It cleans the database, compresses images and caches pages. Fast sites attract more traffic and users.
6	Version: 3.3.1
7	Update URI: https://wordpress.org/plugins/wp-optimize/
8	Author: David Anderson, Ruhani Rabin, Team Updraft
9	Author URI: https://updraftplus.com
10	Text Domain: wp-optimize
11	Domain Path: /languages
12	License: GPLv2 or later
13	*/
14
15	if (!defined('ABSPATH')) die('No direct access allowed');
16
17	// Check to make sure if WP_Optimize is already call and returns.
18	if (!class_exists('WP_Optimize')) :
19	define('WPO_VERSION', '3.3.1');
20	define('WPO_PLUGIN_URL', plugin_dir_url(__FILE__));
21	define('WPO_PLUGIN_MAIN_PATH', plugin_dir_path(__FILE__));
22	define('WPO_PLUGIN_SLUG', plugin_basename(__FILE__));
23	define('WPO_PREMIUM_NOTIFICATION', false);
24	define('WPO_MINIFY_PHP_VERSION_MET', version_compare(PHP_VERSION, '5.4', '>=') ? true : false);
25	if (!defined('WPO_USE_WEBP_CONVERSION')) define('WPO_USE_WEBP_CONVERSION', true);
26
27	class WP_Optimize {
28
29	public $premium_version_link = 'https://getwpo.com/buy/';
30
31	private $template_directories;
32
33	protected static $_instance = null;
34
35	protected $_cache_init_status = null;
36
37	/**
38	* Class constructor
39	*/
40	public function __construct() {
41	spl_autoload_register(array($this, 'loader'));
42
43	// Checks if premium is installed along with plugins needed.
44	add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
45
46	register_activation_hook(__FILE__, array('WPO_Activation', 'actions'));
47	register_deactivation_hook(__FILE__, array('WPO_Deactivation', 'actions'));
48	register_uninstall_hook(__FILE__, array('WPO_Uninstall', 'actions'));
49
50	$this->load_admin();
51	add_action('admin_init', array($this, 'admin_init'));
52	add_action('admin_bar_menu', array($this, 'cache_admin_bar'), 100, 1);
53
54	add_action('init', array($this, 'schedule_plugin_cron_tasks'));
55
56	add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
57	add_action('wpo_cron_event2', array($this, 'cron_action'));
58	add_filter('cron_schedules', array($this, 'cron_schedules'));
59
60	if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time());
61
62	if (!self::is_premium()) {
63	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
64	}
65
66	add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
67
68	add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts'));
69
70	$this->load_ajax_handler();
71
72	// Show update to Premium notice for non-premium multisite.
73	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
74
75	// Action column (show repair button if need).
76	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
77
78	/**
79	* Add action for display Images > Compress images tab.
80	*/
81	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
82
83	include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');
84
85	include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
86
87	register_shutdown_function(array($this, 'log_fatal_errors'));
88
89	add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);
90
91	add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);
92
93	$import_done_hooks = array(
94	'import_end', // wordpress importer
95	'pmxi_after_xml_import', // wp all import
96	);
97
98	$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);
99
100	foreach ($db_update_hooks as $hook) {
101	add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
102	}
103	add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));
104
105	$this->set_heartbeat_api_filters();
106	}
107
108	/**
109	* Auto-loads classes.
110	*
111	* @param string $class_name The name of the class.
112	*/
113	private function loader($class_name) {
114	$dirs = $this->get_class_directories();
115
116	foreach ($dirs as $dir) {
117	$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
118	if (file_exists($class_file)) {
119	require_once($class_file);
120	return;
121	}
122	}
123	}
124
125	/**
126	* Returns an array of class directories
127	*
128	* @return array
129	*/
130	private function get_class_directories() {
131	return array(
132	'cache',
133	'compatibility',
134	'includes',
135	'minify',
136	'optimizations',
137	'webp',
138	);
139	}
140
141	/**
142	* Initialize Admin class to load admin UI
143	*/
144	private function load_admin() {
145	$this->get_admin_instance();
146	}
147
148	/**
149	* Returns Admin class instance
150	*
151	* @return WP_Optimize_Admin
152	*/
153	public function get_admin_instance() {
154	return WP_Optimize_Admin::instance();
155	}
156
157	/**
158	* Detect when an active plugin or theme is updated, and trigger an action
159	*
160	* @param object $upgrader_object
161	* @param array $options
162	* @return void
163	*/
164	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
165	if (empty($options) \|\| !isset($options['type'])) return;
166
167	$should_purge_cache = false;
168	$skin = $upgrader_object->skin;
169	if ('plugin' === $options['type']) {
170	// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
171	if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
172	$should_purge_cache = true;
173	}
174	} elseif ('theme' === $options['type']) {
175	$active_theme = get_stylesheet();
176	$parent_theme = get_template();
177	// A theme is updated using the upload system
178	if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
179	$updated_theme = $upgrader_object->result['destination_name'];
180	// Check if the theme is in use
181	if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) {
182	$should_purge_cache = true;
183	}
184	// A theme is updated using the classic update system
185	} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
186	// Check if the theme is in use
187	if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) {
188	$should_purge_cache = true;
189	}
190	}
191	}
192
193	/**
194	* Action executed when an active theme or plugin was updated
195	*/
196	if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');
197
198	}
199
200	/**
201	* Sets a flag to indicate an import action is done, if needed
202	*/
203	public function maybe_schedule_update_record_count_event() {
204	if (!wp_next_scheduled('wpo_update_record_count_event')) {
205	wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
206	}
207	}
208
209	public function admin_page_wpo_images_smush() {
210	$options = Updraft_Smush_Manager()->get_smush_options();
211	$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
212	$sites = WP_Optimize()->get_sites();
213	$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allows_local_webp_conversion' => $this->does_server_allows_local_webp_conversion()));
214	}
215
216	public static function instance() {
217	if (empty(self::$_instance)) {
218	self::$_instance = new self();
219	}
220	return self::$_instance;
221	}
222
223	public function get_optimizer() {
224	return WP_Optimizer::instance();
225	}
226
227	/**
228	* Adds 3rd party plugin compatibilities.
229	*/
230	public function load_compatibilities() {
231	WPO_Polylang_Compatibility::instance();
232	WPO_Page_Builder_Compatibility::instance();
233	WPO_Custom_Permalink_Compatibility::instance();
234	WPO_TranslatePress_Compatibility::instance();
235
236	do_action('wpo_load_compatibilities');
237	}
238
239	/**
240	* Get and instantiate WP_Optimize_Minify
241	*
242	* @return WP_Optimize_Minify
243	*/
244	public function get_minify() {
245	return WP_Optimize_Minify::instance();
246	}
247
248	public function get_options() {
249	return WP_Optimize_Options::instance();
250	}
251
252	public function get_notices() {
253	return WP_Optimize_Notices::instance();
254	}
255
256	/**
257	* Returns instance if WPO_Page_Cache class.
258	*
259	* @return WPO_Page_Cache
260	*/
261	public function get_page_cache() {
262	return WPO_Page_Cache::instance();
263	}
264
265	/**
266	* Returns instance if WP_Optimize_WebP class.
267	*
268	* @return WP_Optimize_WebP
269	*/
270	public function get_webp_instance() {
271	return WP_Optimize_WebP::get_instance();
272	}
273
274	/**
275	* Detects if the platform is Kinsta or not
276	*
277	* @return bool Returns true if it is Kinsta platform, otherwise returns false
278	*/
279	private function is_kinsta() {
280	return isset($_SERVER['KINSTA_CACHE_ZONE']);
281	}
282
283	/**
284	* Detects whether the server handles cache. eg. Nginx cache
285	*/
286	public function does_server_handles_cache() {
287	return $this->is_kinsta();
288	}
289
290	/**
291	* Detects whether the server supports table optimization.
292	*
293	* Some servers prevent table optimization
294	* because InnoDB engine does not optimize table
295	* instead it drops tables and recreate them
296	* which results in elevated disk write operations
297	*/
298	public function does_server_allows_table_optimization() {
299	return !$this->is_kinsta();
300	}
301
302	/**
303	* Detects whether the server supports local webp conversion tools
304	*/
305	private function does_server_allows_local_webp_conversion() {
306	return !$this->is_kinsta();
307	}
308
309	/**
310	* Create instance of WP_Optimize_Browser_Cache.
311	*
312	* @return WP_Optimize_Browser_Cache
313	*/
314	public function get_browser_cache() {
315	return WP_Optimize_Browser_Cache::instance();
316	}
317
318	/**
319	* Returns WP_Optimize_Database_Information instance.
320	*
321	* @return WP_Optimize_Database_Information
322	*/
323	public function get_db_info() {
324	return WP_Optimize_Database_Information::instance();
325	}
326
327	/**
328	* Returns instance of WP_Optimize_Gzip_Compression.
329	*
330	* @return WP_Optimize_Gzip_Compression
331	*/
332	public function get_gzip_compression() {
333	return WP_Optimize_Gzip_Compression::instance();
334	}
335
336	/**
337	* Create instance of WP_Optimize_Htaccess.
338	*
339	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
340	* @return WP_Optimize_Htaccess
341	*/
342	public static function get_htaccess($htaccess_file = '') {
343	return new WP_Optimize_Htaccess($htaccess_file);
344	}
345
346	/**
347	* Return instance of Updraft_Logger
348	*
349	* @return Updraft_Logger
350	*/
351	public function get_logger() {
352	return Updraft_Logger::instance();
353	}
354
355	/**
356	* Check if the current page belongs to WP-Optimize.
357	*
358	* @return bool
359	*/
360	public function is_wpo_page() {
361	$current_screen = get_current_screen();
362
363	return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
364	}
365
366	/**
367	* Enqueue scripts and styles on WP-Optimize pages.
368	*/
369	public function admin_enqueue_scripts() {
370	$enqueue_version = $this->get_enqueue_version();
371	$min_or_not = $this->get_min_or_not_string();
372	$min_or_not_internal = $this->get_min_or_not_internal_string();
373
374	// Register or enqueue common scripts
375	wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
376	wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
377	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
378
379	// load scripts and styles only on WP-Optimize pages.
380	if (!$this->is_wpo_page()) return;
381
382	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
383
384	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
385
386	wp_enqueue_script('wp-optimize-heartbeat-js', WPO_PLUGIN_URL.'js/heartbeat'.$min_or_not_internal.'.js', array('jquery'), $enqueue_version);
387	wp_localize_script('wp-optimize-heartbeat-js', 'wpo_heartbeat_ajax', array(
388	'ajaxurl' => admin_url('admin-ajax.php'),
389	'nonce' => wp_create_nonce('heartbeat-nonce'),
390	'interval' => WPO_Ajax::HEARTBEAT_INTERVAL
391	));
392
393	wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
394	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js', 'wp-optimize-heartbeat-js'), $enqueue_version);
395	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js', 'wp-optimize-heartbeat-js'), $enqueue_version);
396	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
397	// Using tablesorter to help with organising the DB size on Table Information
398	// https://github.com/Mottie/tablesorter
399	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery', 'wp-optimize-send-command'), $enqueue_version);
400
401	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
402
403	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
404
405	$js_variables = $this->wpo_js_translations();
406	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
407
408	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
409
410	do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);
411	}
412
413	/**
414	* Enqueue any required front-end scripts
415	*
416	* @return void
417	*/
418	public function frontend_enqueue_scripts() {
419	if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return;
420	$enqueue_version = $this->get_enqueue_version();
421	$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();
422
423	// Register or enqueue common scripts
424	wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
425	}
426
427	/**
428	* Load Task Manager
429	*/
430	public function get_task_manager() {
431	include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
432
433	Updraft_Tasks_Activation::check_updates();
434
435	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
436	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
437	include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
438
439	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
440	include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');
441
442	return Updraft_Smush_Manager();
443	}
444
445	/**
446	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
447	*
448	* @returns Boolean
449	*/
450	public static function is_premium() {
451	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
452	$wp_optimize_premium = WP_Optimize_Premium();
453	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
454	}
455	return false;
456	}
457
458	/**
459	* Check if script running on Apache web server. $is_apache is set in wp-includes/vars.php. Also returns true if the server uses litespeed.
460	*
461	* @return bool
462	*/
463	public function is_apache_server() {
464	global $is_apache;
465	return $is_apache;
466	}
467
468	/**
469	* Check if script running on IIS web server.
470	*
471	* @return bool
472	*/
473	public function is_IIS_server() {
474	global $is_IIS, $is_iis7;
475	return $is_IIS \|\| $is_iis7;
476	}
477
478	/**
479	* Check if Apache module or modules active.
480	*
481	* @param string\|array $module - single Apache module name or list of Apache module names.
482	*
483	* @return bool\|null - if null, the result was indeterminate
484	*/
485	public function is_apache_module_loaded($module) {
486	if (!$this->is_apache_server()) return false;
487
488	if (!function_exists('apache_get_modules')) return null;
489
490	$module_loaded = true;
491
492	if (is_array($module)) {
493	foreach ($module as $single_module) {
494	if (!in_array($single_module, apache_get_modules())) {
495	$module_loaded = false;
496	break;
497	}
498	}
499	} else {
500	$module_loaded = in_array($module, apache_get_modules());
501	}
502
503	return $module_loaded;
504	}
505
506	/**
507	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
508	*/
509	public function plugins_loaded() {
510
511	if ($this->does_server_handles_cache()) {
512	add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);
513
514	// If newly migrated to server that handles cache, disable wpo cache
515	$cache = $this->get_page_cache();
516	if ($cache->is_enabled()) {
517	$cache->disable();
518	}
519	}
520
521	add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);
522
523	// Run Premium loader if it exists
524	if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
525	include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
526	}
527
528	// load defaults
529	WP_Optimize()->get_options()->set_default_options();
530
531	// Initialize loggers.
532	$this->setup_loggers();
533
534	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
535	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
536	deactivate_plugins($free_plugin);
537
538	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
539	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
540	$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';
541
542	if (!is_file($advanced_cache_filename) && is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && is_writable($advanced_cache_filename))) {
543	file_put_contents($advanced_cache_filename, '');
544	}
545	}
546
547	// Registers the notice letting the user know it cannot be active if premium is active.
548	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
549	return;
550	}
551
552	// Loads the task manager
553	$this->get_task_manager();
554
555	// Loads the language file.
556	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
557
558	// Load 3rd party plugin compatibilities.
559	$this->load_compatibilities();
560
561	// Load page cache.
562	$this->get_page_cache();
563	$this->init_page_cache();
564
565	// Include minify
566	$this->get_minify();
567	$this->run_updates();
568
569	// We need this here because webp can be unavailable because of server moves
570	// This deletes already converted webp images and original image file when a media is deleted
571	WP_Optimize_WebP_Images::get_instance();
572
573	// Include WebP
574	if (WPO_USE_WEBP_CONVERSION) {
575	$this->get_webp_instance();
576	}
577
578	// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
579	// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
580	}
581
582	/**
583	* Attach this wp-optimize plugin as host of the UpdraftCentral libraries
584	* (e.g. "central" folder)
585	*
586	* @param array $hosts List of plugins having the "central" library integrated into them
587	*
588	* @return array
589	*/
590	public function attach_updraftcentral_host($hosts) {
591	$hosts[] = 'wp-optimize';
592	return $hosts;
593	}
594
595	/**
596	* Filter cache tabs (when it is Kinsta)
597	*
598	* @param array $tabs An array of tabs
599	*
600	* @return array $tabs An array of tabs
601	*/
602	public function filter_cache_tabs($tabs) {
603	unset($tabs['preload']);
604	unset($tabs['advanced']);
605	unset($tabs['gzip']);
606	unset($tabs['settings']);
607	return $tabs;
608	}
609
610	/**
611	* Check whether one of free/Premium is active (whether it is this instance or not)
612	*
613	* @param String $which - 'free' or 'premium'
614	*
615	* @return String\|Boolean - plugin path (if installed) or false if not
616	*/
617	private function is_active($which = 'free') {
618	$active_plugins = $this->get_active_plugins();
619	foreach ($active_plugins as $file) {
620	if ('wp-optimize.php' == basename($file)) {
621	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
622	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
623	}
624	}
625	return false;
626	}
627
628	/**
629	* Gets an array of plugins active on either the current site, or site-wide
630	*
631	* @return Array - a list of plugin paths (relative to the plugin directory)
632	*/
633	private function get_active_plugins() {
634
635	// Gets all active plugins on the current site
636	$active_plugins = get_option('active_plugins');
637
638	if (is_multisite()) {
639	$network_active_plugins = get_site_option('active_sitewide_plugins');
640	if (!empty($network_active_plugins)) {
641	$network_active_plugins = array_keys($network_active_plugins);
642	$active_plugins = array_merge($active_plugins, $network_active_plugins);
643	}
644	}
645
646	return $active_plugins;
647	}
648
649	/**
650	* This function checks whether a specific plugin is installed, and returns information about it
651	*
652	* @param string $name Specify "Plugin Name" to return details about it.
653	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
654	*/
655	public function is_installed($name) {
656
657	// Needed to have the 'get_plugins()' function
658	include_once(ABSPATH.'wp-admin/includes/plugin.php');
659
660	// Gets all plugins available
661	$get_plugins = get_plugins();
662
663	$active_plugins = $this->get_active_plugins();
664
665	$plugin_info = array();
666	$plugin_info['installed'] = false;
667	$plugin_info['active'] = false;
668
669	// Loops around each plugin available.
670	foreach ($get_plugins as $key => $value) {
671	// If the plugin name matches that of the specified name, it will gather details.
672	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
673	$plugin_info['installed'] = true;
674	$plugin_info['name'] = $key;
675	$plugin_info['version'] = $value['Version'];
676	if (in_array($key, $active_plugins)) {
677	$plugin_info['active'] = true;
678	}
679	break;
680	}
681	return $plugin_info;
682	}
683
684	/**
685	* This is a notice to show users that premium is installed
686	*/
687	public function show_admin_notice_premium() {
688	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
689	if (isset($_GET['activate'])) unset($_GET['activate']);
690	}
691
692	/**
693	* Show update to Premium notice for non-premium multisite.
694	*/
695	public function show_multisite_update_to_premium_notice() {
696	if (!is_multisite() \|\| self::is_premium()) return;
697
698	echo '<p><a href="'.$this->premium_version_link.'">'.__('New feature: WP-Optimize Premium can now optimize all sites within a multisite install, not just the main one.', 'wp-optimize').'</a></p>';
699	}
700
701	public function admin_init() {
702	$pagenow = $GLOBALS['pagenow'];
703
704	$this->register_template_directories();
705
706	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
707	$options = $this->get_options();
708
709	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
710
711	if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
712	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
713	$installed_for = (time() - $installed);
714	}
715
716	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
717	add_action('all_admin_notices', array($this, 'show_admin_notice_upgraded'));
718	}
719	}
720
721	if ($this->is_wp_smush_installed()) {
722	add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
723	}
724	}
725
726	/**
727	* Checks whether the WP Smush plugin is active or not
728	*
729	* @return bool
730	*/
731	private function is_wp_smush_installed() {
732	return is_plugin_active('wp-smushit/wp-smush.php');
733	}
734
735	/**
736	* Remove WPO plugin name from WP Smushit transient value
737	*
738	* @return array $active_plugins
739	*/
740	public function modify_wp_smush_conflict_check($active_plugins) {
741	// This can be boolean value since it is return value of get_transient
742	if (!is_array($active_plugins)) return $active_plugins;
743
744	if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
745	unset($active_plugins[$key]);
746	}
747	return $active_plugins;
748	}
749
750	/**
751	* Get the install or update notice instance
752	*
753	* @return WP_Optimize_Install_Or_Update_Notice
754	*/
755	public function get_install_or_update_notice() {
756	static $instance = null;
757	if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
758	$instance = new WP_Optimize_Install_Or_Update_Notice();
759	return $instance;
760	}
761
762	/**
763	* Display an admin notice for an upgraded version.
764	*/
765	public function show_admin_notice_upgraded() {
766	$this->include_template('notices/thanks-for-using-main-dash.php', false, array(
767	'is_premium' => WP_Optimize::is_premium()
768	));
769	}
770
771	public function capability_required() {
772	return apply_filters('wp_optimize_capability_required', 'manage_options');
773	}
774
775	/**
776	* Returns array of translations used in javascript code.
777	*
778	* @return array
779	*/
780	public function wpo_js_translations() {
781	$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
782	return apply_filters('wpo_js_translations', array(
783	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
784	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
785	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
786	'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
787	'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
788	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
789	'table_optimization_timeout' => 120000,
790	'add' => __('Add', 'wp-optimize'),
791	'cancel' => __('Cancel', 'wp-optimize'),
792	'cancelling' => __('Cancelling...', 'wp-optimize'),
793	'enable' => __('Enable', 'wp-optimize'),
794	'disable' => __('Disable', 'wp-optimize'),
795	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
796	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
797	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
798	'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
799	'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
800	'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
801	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
802	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
803	'update' => __('Update', 'wp-optimize'),
804	'run_now' => __('Run now', 'wp-optimize'),
805	'starting_preload' => __('Started preload...', 'wp-optimize'),
806	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
807	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
808	'number_of_files' => __('Number of files:', 'wp-optimize'),
809	'toggle_info' => __('Show information', 'wp-optimize'),
810	'delete_file' => __('Delete', 'wp-optimize'),
811	'added_to_list' => __('Added to the list', 'wp-optimize'),
812	'added_notice' => __('The file was added to the list', 'wp-optimize'),
813	'save_notice' => __('Save the changes', 'wp-optimize'),
814	'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
815	'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
816	'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
817	'loading_data' => __('Loading data...', 'wp-optimize'),
818	'spinner_src' => esc_attr(admin_url('images/spinner-2x.gif')),
819	'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
820	'sites' => $this->get_sites(),
821	'user_always_ignores_table_delete_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-delete-warning', true)) ? true : false,
822	'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
823	'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
824	'network_site_url' => network_site_url(),
825	'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
826	'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
827	'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
828	'importing' => __('Importing...', 'wp-optimize'),
829	'importing_data_from' => __('This will import data from:', 'wp-optimize'),
830	'exported_on' => __('Which was exported on:', 'wp-optimize'),
831	'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
832	'select_destination' => __('Select destination', 'wp-optimize'),
833	));
834	}
835
836	/**
837	* Manages the admin bar menu for caching (currently page and minify)
838	*/
839	public function cache_admin_bar($wp_admin_bar) {
840
841	$options = $this->get_options();
842	if (!$options->get_option('enable_cache_in_admin_bar', true)) return;
843
844	/**
845	* The "purge cache" menu items
846	*
847	* @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
848	* @param object $wp_admin_bar
849	*/
850	$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);
851
852	if (empty($menu_items) \|\| !is_array($menu_items)) return;
853
854	$wp_admin_bar->add_menu(array(
855	'id' => 'wpo_purge_cache',
856	'title' => __('Purge cache', 'wp-optimize'),
857	'href' => '#',
858	'meta' => array(
859	'title' => __('Purge cache', 'wp-optimize'),
860	),
861	'parent' => false,
862	));
863
864	foreach ($menu_items as $item) {
865	$wp_admin_bar->add_menu($item);
866	}
867	}
868
869	/**
870	* Add settings link on plugin page
871	*
872	* @param string $links Passing through the URL to be used within the HREF.
873	* @return string Returns the Links.
874	*/
875	public function plugin_settings_link($links) {
876
877	$admin_page_url = $this->get_options()->admin_page_url();
878	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
879
880	if (false == self::is_premium()) {
881	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
882	array_unshift($links, $premium_link);
883	}
884
885	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
886	array_unshift($links, $settings_link);
887
888	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
889	array_unshift($links, $optimize_link);
890	return $links;
891	}
892
893	/**
894	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
895	*
896	* @param string $content String for output to column
897	* @param object $table_info Object with table info.
898	*
899	* @return string
900	*/
901	public function tables_list_additional_column_data($content, $table_info) {
902	if ($table_info->is_needing_repair) {
903	$content .= '<div class="wpo_button_wrap">'
904	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
905	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
906	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
907	. '</div>';
908	}
909
910	// table belongs to plugin.
911	if ($table_info->can_be_removed) {
912	$content .= '<div>'
913	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
914	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
915	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
916	. '</div>';
917	}
918
919	// Add option for MyISAM to InnoDB conversion.
920	if ('MyISAM' == $table_info->Engine) {
921	$content .= '<div class="wpo_button_convert wpo_button_wrap">'
922	. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
923	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
924	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
925	. '</div>';
926
927	}
928
929	return $content;
930	}
931
932	/**
933	* Initialize WP-Optimize page cache.
934	*/
935	public function init_page_cache() {
936	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
937	if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) {
938	$this->_cache_init_status = $this->get_page_cache()->enable();
939	}
940	}
941	}
942
943	/**
944	* Get init_page_cache() status.
945	*
946	* @return bool
947	*/
948	public function get_init_page_cache_status() {
949	return $this->_cache_init_status;
950	}
951
952	/**
953	* Schedules cron event based on selected schedule type
954	*
955	* @return void
956	*/
957	public function cron_activate() {
958	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
959
960	$options = $this->get_options();
961
962	if ($options->get_option('schedule') === false) {
963	$options->set_default_options();
964	} else {
965	if ('true' == $options->get_option('schedule')) {
966	if (!wp_next_scheduled('wpo_cron_event2')) {
967	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
968
969	// Backward compatibility
970	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
971
972	$this_time = (86400 * 7);
973
974	switch ($schedule_type) {
975	case "wpo_daily":
976	$this_time = 86400;
977	break;
978
979	case "wpo_weekly":
980	$this_time = (86400 * 7);
981	break;
982
983	case "wpo_fortnightly":
984	$this_time = (86400 * 14);
985	break;
986
987	case "wpo_monthly":
988	$this_time = (86400 * 30);
989	break;
990	}
991
992	add_action('wpo_cron_event2', array($this, 'cron_action'));
993	$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
994	WP_Optimize()->log('running wp_schedule_event()');
995	if (is_wp_error($result)) {
996	$error_msg = $result->get_error_message();
997	WP_Optimize()->log($error_msg);
998	WP_Optimize()->log(print_r($result, true));
999	} else {
1000	WP_Optimize()->log($result);
1001	}
1002	}
1003	}
1004	}
1005	}
1006
1007	/**
1008	* Clears all cron events
1009	*
1010	* @return void
1011	*/
1012	public function wpo_cron_deactivate() {
1013	$cron_jobs = _get_cron_array();
1014	foreach ($cron_jobs as $job) {
1015	foreach (array_keys($job) as $hook) {
1016	if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
1017	}
1018	}
1019	}
1020
1021	/**
1022	* Scheduler public functions to update schedulers
1023	*
1024	* @param array $schedules An array of schedules being passed.
1025	* @return array An array of schedules being returned.
1026	*/
1027	public function cron_schedules($schedules) {
1028	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1029	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1030	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1031	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1032	return $schedules;
1033	}
1034
1035	/**
1036	* Returns count of overdue cron jobs.
1037	*
1038	* @return integer
1039	*/
1040	public function howmany_overdue_crons() {
1041	$how_many_overdue = 0;
1042	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1043	$crons = _get_cron_array();
1044	if (is_array($crons)) {
1045	$timenow = time();
1046	foreach ($crons as $jt => $job) {
1047	if ($jt < $timenow) {
1048	$how_many_overdue++;
1049	}
1050	}
1051	}
1052	}
1053	return $how_many_overdue;
1054	}
1055
1056	/**
1057	* Run updates on plugin activation.
1058	*/
1059	public function run_updates() {
1060	include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
1061	WP_Optimize_Updates::check_updates();
1062	}
1063
1064	/**
1065	* Returns warning about overdue crons.
1066	*
1067	* @param int $howmany count of overdue crons
1068	* @return string
1069	*/
1070	public function show_admin_warning_overdue_crons($howmany) {
1071	$ret = '<div class="updated below-h2"><p>';
1072	$ret .= '<strong>'.__('Warning', 'wp-optimize').':</strong> '.sprintf(__('WordPress has a number (%d) of scheduled tasks which are overdue.', 'wp-optimize'), $howmany).' '. __('Unless this is a development site, this probably means that the scheduler in your WordPress install is not working.', 'wp-optimize').' <a href="'.apply_filters('wpoptimize_com_link', "https://getwpo.com/faqs/the-scheduler-in-my-wordpress-installation-is-not-working-what-should-i-do/").'">'.__('Read this page for a guide to possible causes and how to fix it.', 'wp-optimize').'</a>';
1073	$ret .= '</p></div>';
1074	return $ret;
1075	}
1076
1077	private function wp_normalize_path($path) {
1078	// Wp_normalize_path is not present before WP 3.9.
1079	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1080	// Taken from WP 4.6.
1081	$path = str_replace('\\', '/', $path);
1082	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1083	if (':' === substr($path, 1, 1)) {
1084	$path = ucfirst($path);
1085	}
1086	return $path;
1087	}
1088
1089	public function get_templates_dir() {
1090	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
1091	}
1092
1093	public function get_templates_url() {
1094	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates');
1095	}
1096
1097	/**
1098	* Return or output view content
1099	*
1100	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1101	* @param Boolean $return_instead_of_echo - what to do with the results
1102	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1103	*
1104	* @return String\|Void
1105	*/
1106	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1107	if ($return_instead_of_echo) ob_start();
1108
1109	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1110	$prefix = $matches[1];
1111	$suffix = $matches[2];
1112	if (isset($this->template_directories[$prefix])) {
1113	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1114	}
1115	}
1116
1117	if (!isset($template_file)) {
1118	$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
1119	}
1120
1121	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1122
1123	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1124
1125	if (!file_exists($template_file)) {
1126	error_log("WP Optimize: template not found: ".$template_file);
1127	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1128	} else {
1129	extract($extract_these);
1130	// The following are useful variables which can be used in the template.
1131	// They appear as unused, but may be used in the $template_file.
1132	$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
1133	$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
1134	$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
1135	$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
1136	$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
1137	include $template_file;
1138	}
1139
1140	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1141
1142	if ($return_instead_of_echo) return ob_get_clean();
1143	}
1144
1145	/**
1146	* Build a list of template directories (stored in self::$template_directories)
1147	*/
1148	private function register_template_directories() {
1149
1150	$template_directories = array();
1151
1152	$templates_dir = $this->get_templates_dir();
1153
1154	if ($dh = opendir($templates_dir)) {
1155	while (($file = readdir($dh)) !== false) {
1156	if ('.' == $file \|\| '..' == $file) continue;
1157	if (is_dir($templates_dir.'/'.$file)) {
1158	$template_directories[$file] = $templates_dir.'/'.$file;
1159	}
1160	}
1161	closedir($dh);
1162	}
1163
1164	// Optimal hook for most extensions to hook into.
1165	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1166
1167	}
1168
1169	/**
1170	* Message to debug
1171	*
1172	* @param string $message Message to insert into the log.
1173	* @param array $context array with variables used in $message like in template,
1174	* for ex.
1175	* $message = 'Hello {message}';
1176	* $context = ['message' => 'world']
1177	* 'Hello world' string will be saved in log.
1178	*/
1179	public function log($message, $context = array()) {
1180	$this->get_logger()->debug($message, $context);
1181	}
1182
1183	/**
1184	* Format Bytes Into KB/MB
1185	*
1186	* @param mixed $bytes Number of bytes to be converted.
1187	* @param integer $decimals the number of decimal digits
1188	* @return integer return the correct format size.
1189	*/
1190	public function format_size($bytes, $decimals = 2) {
1191	if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');
1192
1193	if (1073741824 <= $bytes) {
1194	$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
1195	} elseif (1048576 <= $bytes) {
1196	$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
1197	} elseif (1024 <= $bytes) {
1198	$bytes = number_format($bytes / 1024, $decimals) . ' KB';
1199	} elseif (1 < $bytes) {
1200	$bytes = $bytes . ' bytes';
1201	} elseif (1 == $bytes) {
1202	$bytes = $bytes . ' byte';
1203	} else {
1204	$bytes = '0 bytes';
1205	}
1206
1207	return $bytes;
1208	}
1209
1210	/**
1211	* Format a timestamp into a juman readable date time
1212	*
1213	* @param int $timestamp
1214	* @return string
1215	*/
1216	public function format_date_time($timestamp) {
1217	return date_i18n(get_option('date_format').' @ '.get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
1218	}
1219
1220	/**
1221	* Executed this function on cron event.
1222	*
1223	* @return void
1224	*/
1225	public function cron_action() {
1226
1227	$optimizer = $this->get_optimizer();
1228	$options = $this->get_options();
1229
1230	$this->log('WPO: Starting cron_action()');
1231	$options->update_option('last-optimized', time());
1232	if ('true' == $options->get_option('schedule')) {
1233	$this_options = $options->get_option('auto');
1234
1235	// Currently the output of the optimizations is not saved/used/logged.
1236	$optimizer->do_optimizations($this_options, 'auto');
1237	}
1238
1239	}
1240
1241	/**
1242	* Schedule cron tasks used by plugin.
1243	*
1244	* @return void
1245	*/
1246	public function schedule_plugin_cron_tasks() {
1247	if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
1248	wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
1249	}
1250
1251	add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
1252	}
1253
1254	/**
1255	* Do plugin background tasks.
1256	*
1257	* @return void
1258	*/
1259	public function do_weekly_cron_tasks() {
1260	// add tasks here.
1261	$this->get_db_info()->update_plugin_json();
1262	}
1263
1264	/**
1265	* This will customize a URL with a correct Affiliate link
1266	* This function can be update to suit any URL as longs as the URL is passed
1267	*
1268	* @param String $url - URL to be check to see if it an updraftplus match.
1269	* @param String $text - Text to be entered within the href a tags.
1270	* @param String $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
1271	* @param String\|Array $attrs - Specify the HTML attributes as an array or string. Use the array format for multiple attributes (e.g., array( "class" => "lorem-ipsum", "title" => "Highlighting text" )), and use the string format for a single attribute (e.g., 'class="lorem-ipsum"').
1272	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1273	* @return String\|void
1274	*/
1275	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
1276	// Check if the URL is UpdraftPlus.
1277	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1278
1279	// Check if the variable $text is empty (null value included), otherwise assign $html.
1280	$content = empty($text) ? $html : esc_html($text);
1281
1282	// Check if $attrs is an array to convert the attributes into a string line.
1283	$str_attrs = '';
1284	if (is_array($attrs)) {
1285	foreach ($attrs as $attr => $value) {
1286	$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
1287	}
1288	} else {
1289	// If $attrs is empty, the explode function will only return an empty array.
1290	$attrs = explode('=', $attrs);
1291	// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
1292	$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
1293	}
1294
1295	// Check if it is necessary to add a target value if the url is external
1296	$is_external_url = $this->is_external_url($url);
1297	if ($is_external_url) {
1298	$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
1299	$str_attrs .= ' target="_blank"';
1300	}
1301
1302	$result = sprintf(
1303	'<a href="%s" %s>%s</a>',
1304	esc_url($url),
1305	$str_attrs,
1306	$content
1307	);
1308
1309	if ($return_instead_of_echo) return $result;
1310	echo $result;
1311	}
1312
1313	/**
1314	* Check if a URL is external
1315	*
1316	* @param string $url
1317	* @return string
1318	*/
1319	public function is_external_url($url) {
1320	if (empty($url)) {
1321	return false;
1322	}
1323
1324	$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
1325	$url = wp_parse_url($url, PHP_URL_HOST);
1326
1327	// Compare the domains and return true if they are different
1328	return $current_domain !== $url;
1329	}
1330
1331	/**
1332	* Get an URL with an eventual affiliate ID
1333	*
1334	* @param string $url
1335	* @return string
1336	*/
1337	public function maybe_add_affiliate_params($url) {
1338	// Check if the URL is UpdraftPlus.
1339	if (false !== strpos($url, '//updraftplus.com')) {
1340	// Set URL with Affiliate ID.
1341	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1342
1343	// Apply filters.
1344	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1345	}
1346	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1347	}
1348
1349	/**
1350	* Setup WPO logger(s)
1351	*/
1352	public function setup_loggers() {
1353
1354	$logger = $this->get_logger();
1355	$loggers = $this->wpo_loggers();
1356
1357	if (!empty($loggers)) {
1358	foreach ($loggers as $_logger) {
1359	$logger->add_logger($_logger);
1360	}
1361	}
1362
1363	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1364	}
1365
1366	/**
1367	* Run logger actions after all optimizations done
1368	*/
1369	public function after_optimizations_logger_action() {
1370	$loggers = $this->get_logger()->get_loggers();
1371	if (!empty($loggers)) {
1372	foreach ($loggers as $logger) {
1373	if (is_a($logger, 'Updraft_Email_Logger')) {
1374	$logger->flush_log();
1375	}
1376	}
1377	}
1378	}
1379
1380	/**
1381	* Returns list of WPO loggers instances
1382	* Apply filter wp_optimize_loggers
1383	*
1384	* @return array
1385	*/
1386	public function wpo_loggers() {
1387
1388	$loggers = array();
1389	$loggers_classes_by_id = array();
1390	$options_keys = array();
1391
1392	$loggers_classes = $this->get_loggers_classes();
1393
1394	foreach ($loggers_classes as $logger_class => $source) {
1395	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1396	}
1397
1398	$options = $this->get_options();
1399
1400	$saved_loggers = $options->get_option('logging');
1401	$logger_additional_options = $options->get_option('logging-additional');
1402
1403	// create loggers classes instances.
1404	if (!empty($saved_loggers)) {
1405	// check for previous version options format.
1406	$keys = array_keys($saved_loggers);
1407
1408	// if options stored in old format then reformat it.
1409	if (false == is_numeric($keys[0])) {
1410	$_saved_loggers = array();
1411	foreach ($saved_loggers as $logger_id => $enabled) {
1412	if ($enabled) {
1413	$_saved_loggers[] = $logger_id;
1414	}
1415	}
1416
1417	// fill email with admin.
1418	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1419	$logger_additional_options['updraft_email_logger'] = array(
1420	get_option('admin_email')
1421	);
1422	}
1423
1424	$saved_loggers = $_saved_loggers;
1425	}
1426
1427	foreach ($saved_loggers as $i => $logger_id) {
1428
1429	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1430
1431	$logger_class = $loggers_classes_by_id[$logger_id];
1432
1433	$logger = new $logger_class();
1434
1435	$logger_options = $logger->get_options_list();
1436
1437	if (!empty($logger_options)) {
1438	foreach (array_keys($logger_options) as $option_name) {
1439	if (array_key_exists($option_name, $options_keys)) {
1440	$options_keys[$option_name]++;
1441	} else {
1442	$options_keys[$option_name] = 0;
1443	}
1444
1445	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1446
1447	// if options in old format then get correct value.
1448	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1449	$option_value = array_shift($logger_additional_options[$logger_id]);
1450	}
1451
1452	$logger->set_option($option_name, $option_value);
1453	}
1454	}
1455
1456	// check if logger is active.
1457	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1458
1459	if ($active) {
1460	$logger->enable();
1461	} else {
1462	$logger->disable();
1463	}
1464
1465	$loggers[] = $logger;
1466	}
1467	}
1468
1469	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1470
1471	return $loggers;
1472	}
1473
1474	/**
1475	* Returns associative array with logger class name in a key and path to class file in a value.
1476	*
1477	* @return array
1478	*/
1479	public function get_loggers_classes() {
1480	$loggers_classes = array(
1481	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1482	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1483	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1484	);
1485
1486	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1487
1488	if (!empty($loggers_classes)) {
1489	foreach ($loggers_classes as $logger_class => $logger_file) {
1490	if (!class_exists($logger_class)) {
1491	if (is_file($logger_file)) {
1492	include_once($logger_file);
1493	}
1494	}
1495	}
1496	}
1497
1498	return $loggers_classes;
1499	}
1500
1501	/**
1502	* Returns information about all loggers classes.
1503	*
1504	* @return array
1505	*/
1506	public function get_loggers_classes_info() {
1507	$loggers_classes = $this->get_loggers_classes();
1508
1509	$loggers_classes_info = array();
1510
1511	if (!empty($loggers_classes)) {
1512	foreach (array_keys($loggers_classes) as $logger_class_name) {
1513
1514	if (!class_exists($logger_class_name)) continue;
1515
1516	$logger_id = strtolower($logger_class_name);
1517	$logger_class = new $logger_class_name();
1518
1519	$loggers_classes_info[$logger_id] = array(
1520	'description' => $logger_class->get_description(),
1521	'available' => $logger_class->is_available(),
1522	'allow_multiple' => $logger_class->is_allow_multiple(),
1523	'options' => $logger_class->get_options_list()
1524	);
1525	}
1526	}
1527
1528	return $loggers_classes_info;
1529	}
1530
1531	/**
1532	* Returns true if optimization works in multisite mode
1533	*
1534	* @return boolean
1535	*/
1536	public function is_multisite_mode() {
1537	return (is_multisite() && self::is_premium());
1538	}
1539
1540	/**
1541	* Returns true if current user can run optimizations.
1542	*
1543	* @return bool
1544	*/
1545	public function can_run_optimizations() {
1546	// we don't check permissions for cron jobs.
1547	if (defined('DOING_CRON') && DOING_CRON) return true;
1548
1549	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1550	return true;
1551	}
1552
1553	/**
1554	* Returns true if current user can manage plugin options.
1555	*
1556	* @return bool
1557	*/
1558	public function can_manage_options() {
1559	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1560	return true;
1561	}
1562
1563	/**
1564	* Returns list of all sites in multisite
1565	*
1566	* @return array
1567	*/
1568	public function get_sites() {
1569	$sites = array();
1570	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1571	if (function_exists('get_sites')) {
1572	$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
1573	} elseif (function_exists('wp_get_sites')) {
1574	$sites = wp_get_sites(array('network_id' => null, 'deleted' => 0, 'limit' => 999999));
1575	}
1576	return $sites;
1577	}
1578
1579	/**
1580	* Returns script memory limit in megabytes.
1581	*
1582	* @param bool $memory_limit
1583	* @return int
1584	*/
1585	public function get_memory_limit($memory_limit = false) {
1586	// Returns in megabytes
1587	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1588	$memory_limit = rtrim($memory_limit);
1589
1590	return $this->return_bytes($memory_limit);
1591	}
1592
1593	/**
1594	* Returns free memory in bytes.
1595	*
1596	* @return int
1597	*/
1598	public function get_free_memory() {
1599	return $this->get_memory_limit() - memory_get_usage();
1600	}
1601
1602	/**
1603	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1604	*
1605	* @return int memory limit in bytes.
1606	*/
1607	public function get_script_memory_limit() {
1608	$memory_limit = $this->get_memory_limit();
1609
1610	if (defined('WP_MAX_MEMORY_LIMIT')) {
1611	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1612
1613	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1614	$memory_limit = $wp_memory_limit;
1615	}
1616	}
1617
1618	return $memory_limit;
1619	}
1620
1621	/**
1622	* Returns max packet size for database.
1623	*
1624	* @return int\|string
1625	*/
1626	public function get_max_packet_size() {
1627	global $wpdb;
1628	static $mp = 0;
1629
1630	if ($mp > 0) return $mp;
1631
1632	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1633	// Default to 1MB
1634	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1635	// 32MB
1636	if ($mp < 33554432) {
1637	$save = $wpdb->show_errors(false);
1638	@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
1639	$wpdb->show_errors($save);
1640
1641	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1642	// Default to 1MB
1643	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1644	}
1645
1646	return $mp;
1647	}
1648
1649	/**
1650	* Converts shorthand memory notation value to bytes.
1651	* From http://php.net/manual/en/function.ini-get.php
1652	*
1653	* @param string $val shorthand memory notation value.
1654	*/
1655	public function return_bytes($val) {
1656	$val = trim($val);
1657	$last = strtolower($val[strlen($val)-1]);
1658	$val = (int) $val;
1659	switch ($last) {
1660	case 'g':
1661	$val *= 1024;
1662	// no break
1663	case 'm':
1664	$val *= 1024;
1665	// no break
1666	case 'k':
1667	$val *= 1024;
1668	}
1669
1670	return $val;
1671	}
1672
1673	/**
1674	* Log fatal errors to defined log destinations.
1675	*/
1676	public function log_fatal_errors() {
1677	$last_error = error_get_last();
1678
1679	if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
1680	$this->get_logger()->critical($last_error['message']);
1681	}
1682	}
1683
1684	/**
1685	* Close browser connection and continue script work. - Taken from UpdraftPlus
1686	*
1687	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1688	* @return void
1689	*/
1690	public function close_browser_connection($txt = '') {
1691	if (!headers_sent()) {
1692	// Close browser connection so that it can resume AJAX polling
1693	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1694	header('Connection: close');
1695	header('Content-Encoding: none');
1696	}
1697
1698	if (session_id()) session_write_close();
1699	echo "\r\n\r\n";
1700	echo $txt;
1701	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1702	$ob_level = ob_get_level();
1703	while ($ob_level > 0) {
1704	ob_end_flush();
1705	$ob_level--;
1706	}
1707	flush();
1708	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1709	}
1710
1711	/**
1712	* Get the current theme's style.css headers
1713	*
1714	* @return array\|WP_Error
1715	*/
1716	public function get_stylesheet_headers() {
1717	static $headers;
1718	if (isset($headers)) return $headers;
1719
1720	$style = get_template_directory_uri() . '/style.css';
1721
1722	/**
1723	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
1724	*
1725	* @param array $request_params Default parameters
1726	*/
1727	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
1728
1729	// trying to load style.css.
1730	$response = wp_remote_get($style, $request_params);
1731
1732	if (is_a($response, 'WP_Error')) return $response;
1733
1734	$headers = wp_remote_retrieve_headers($response);
1735
1736	if (method_exists($headers, 'getAll')) {
1737	$headers = $headers->getAll();
1738	}
1739
1740	return is_array($headers) ? $headers : array();
1741	}
1742
1743	/**
1744	* Try to change PHP script time limit.
1745	*/
1746	public function change_time_limit() {
1747	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1748
1749	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1750	}
1751
1752	/**
1753	* Does the request come from UDC
1754	*
1755	* @return boolean
1756	*/
1757	public function is_updraft_central_request() {
1758	return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
1759	}
1760
1761	/**
1762	* Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
1763	*
1764	* @return boolean
1765	*/
1766	public function template_should_include_data() {
1767	/**
1768	* Filters wether data should be included in certain templates or not.
1769	*/
1770	return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
1771	}
1772
1773	/**
1774	* Load the templates for the modal window
1775	*/
1776	public function load_modal_template() {
1777	$this->include_template('modal.php');
1778	}
1779
1780	/**
1781	* Delete transients and semaphores data from options table.
1782	*/
1783	public function delete_transients_and_semaphores() {
1784	global $wpdb;
1785
1786	$masks = array(
1787	'updraft_locked_wpo_%',
1788	'updraft_unlocked_wpo_%',
1789	'updraft_last_lock_time_wpo_%',
1790	'updraft_semaphore_wpo_%',
1791	'wpo_locked_%',
1792	'wpo_unlocked_%',
1793	'wpo_last_lock_time_%',
1794	'wpo_semaphore_%',
1795	'_transient_timeout_wpo_%',
1796	'_transient_wpo_%',
1797	'updraft_lock_wpo_%',
1798	'wpo_last_scheduled_%',
1799	);
1800
1801	$where_parts = array();
1802	foreach ($masks as $mask) {
1803	$where_parts[] = "(`option_name` LIKE '{$mask}')";
1804	}
1805
1806	$wpdb->query("DELETE FROM {$wpdb->options} WHERE " . join(' OR ', $where_parts));
1807	}
1808
1809	/**
1810	* Prevents bots from indexing plugins list
1811	*/
1812	public function robots_txt($output) {
1813	$upload_dir = wp_upload_dir();
1814	$path = parse_url($upload_dir['baseurl']);
1815	$output .= "\nUser-agent: *";
1816	$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo-plugins-tables-list.json\n";
1817	return $output;
1818	}
1819
1820	/**
1821	* Returns desired enqueue version string
1822	*
1823	* @return string Enqueue version as string
1824	*/
1825	public function get_enqueue_version() {
1826	return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
1827	}
1828
1829	/**
1830	* Returns script suffix string
1831	*
1832	* @return string empty or `.min` suffix string
1833	*/
1834	public function get_min_or_not_string() {
1835	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
1836	}
1837
1838	/**
1839	* Returns script suffix string with WPO_VERSION
1840	*
1841	* @return string empty or min suffix with wpo_version string
1842	*/
1843	public function get_min_or_not_internal_string() {
1844	return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
1845	}
1846
1847	/**
1848	* Instantiate Ajax handling class
1849	*/
1850	private function load_ajax_handler() {
1851	WPO_Ajax::get_instance();
1852	}
1853
1854	/**
1855	* Set custom heartbeat API interval
1856	*
1857	* @param array $settings Current WP settings
1858	* @return array
1859	*/
1860	public function set_heartbeat_time_interval($settings) {
1861	$settings['interval'] = WPO_Ajax::HEARTBEAT_INTERVAL;
1862	return $settings;
1863	}
1864
1865	/**
1866	* Receive Heartbeat data and respond.
1867	*
1868	* Processes data received via a Heartbeat request, and returns additional data to pass back to the front end.
1869	*
1870	* @param array $response Heartbeat response data to pass back to front end.
1871	* @param array $data Data received from the front end (unslashed).
1872	*
1873	* @return array
1874	*/
1875	public function receive_heartbeat($response, $data) {
1876	foreach ($data as $uid => $command) {
1877	$is_wpo_heartbeat = strpos($uid, 'wpo-heartbeat') === 0;
1878
1879	if ($is_wpo_heartbeat) {
1880	$response['callbacks'][$uid] = apply_filters('wp_optimize_heartbeat', $command);
1881	}
1882	}
1883
1884	return $response;
1885	}
1886
1887	/**
1888	* Add heartbeat API filters if the page is enabled in the array
1889	*
1890	* @return void
1891	*/
1892	public function set_heartbeat_api_filters() {
1893	$pages_enabled = array('WP-Optimize', 'wpo_images', 'wpo_cache', 'wpo_minify', 'wpo_settings', 'wpo_support', 'wpo_mayalso');
1894
1895	// Change heartbeat API frequency to 15 seconds to improve UI experience
1896	// only for the pages that we enable in `$pages_enabled`
1897	$query_page = isset($_GET['page']) ? sanitize_text_field(wp_unslash($_GET['page'])) : ''; // phpcs:ignore WordPress.Security.NonceVerification -- not processing form data
1898	if (in_array($query_page, $pages_enabled)) {
1899	add_filter('heartbeat_settings', array($this, 'set_heartbeat_time_interval'), PHP_INT_MAX);
1900	}
1901
1902	// Handle heartbeat events
1903	add_filter('heartbeat_received', array($this, 'receive_heartbeat'), 10, 2);
1904	}
1905	}
1906
1907	/**
1908	* Unschedule specific tasks:
1909	* `wpo_cron_event2` => DB optimizations
1910	* `wpo_weekly_cron_tasks` => ex: plugin.json auto update
1911	*
1912	* @return void
1913	*/
1914	function wpo_cron_deactivate() {
1915	WP_Optimize()->log('running wpo_cron_deactivate()');
1916	wp_clear_scheduled_hook('wpo_cron_event2');
1917	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
1918	}
1919
1920	function WP_Optimize() {
1921	return WP_Optimize::instance();
1922	}
1923
1924	endif;
1925
1926	$GLOBALS['wp_optimize'] = WP_Optimize();
1927