wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.0.12, at wp-optimize.php

2,010 lines 68.5 KB

Raw Download Zip

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: 3.0.12
7	Author: David Anderson, Ruhani Rabin, Team Updraft
8	Author URI: https://updraftplus.com
9	Text Domain: wp-optimize
10	Domain Path: /languages
11	License: GPLv2 or later
12	*/
13
14	if (!defined('ABSPATH')) die('No direct access allowed');
15
16	// Check to make sure if WP_Optimize is already call and returns.
17	if (!class_exists('WP_Optimize')) :
18	define('WPO_VERSION', '3.0.12');
19	define('WPO_PLUGIN_URL', plugin_dir_url(__FILE__));
20	define('WPO_PLUGIN_MAIN_PATH', plugin_dir_path(__FILE__));
21	define('WPO_PREMIUM_NOTIFICATION', false);
22
23	class WP_Optimize {
24
25	public $premium_version_link = 'https://getwpo.com/buy/';
26
27	private $template_directories;
28
29	protected static $_instance = null;
30
31	protected static $_optimizer_instance = null;
32
33	protected static $_options_instance = null;
34
35	protected static $_notices_instance = null;
36
37	protected static $_logger_instance = null;
38
39	protected static $_browser_cache = null;
40
41	protected static $_db_info = null;
42
43	protected static $_cache = null;
44
45	protected static $_gzip_compression = null;
46
47	/**
48	* Class constructor
49	*/
50	public function __construct() {
51
52	// Checks if premium is installed along with plugins needed.
53	add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
54
55	register_activation_hook(__FILE__, 'wpo_activation_actions');
56	register_deactivation_hook(__FILE__, 'wpo_deactivation_actions');
57	register_uninstall_hook(__FILE__, 'wpo_uninstall_actions');
58
59	add_action('admin_init', array($this, 'admin_init'));
60	add_action('admin_menu', array($this, 'admin_menu'));
61
62	add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
63	add_action('wpo_cron_event2', array($this, 'cron_action'));
64	add_filter('cron_schedules', array($this, 'cron_schedules'));
65
66	if (!$this->is_premium()) {
67	add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
68	}
69
70	add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));
71
72	add_action('wp_ajax_wp_optimize_ajax', array($this, 'wp_optimize_ajax_handler'));
73
74	// Show update to Premium notice for non-premium multisite.
75	add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));
76
77	// Action column (show repair button if need).
78	add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);
79
80	/**
81	* Add action for display Images > Compress images tab.
82	*/
83	add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));
84
85	include_once(WPO_PLUGIN_MAIN_PATH.'/includes/updraftcentral.php');
86
87	include_once(WPO_PLUGIN_MAIN_PATH.'/includes/backward-compatibility-functions.php');
88
89	register_shutdown_function(array($this, 'log_fatal_errors'));
90
91	$this->schedule_plugin_cron_tasks();
92	}
93
94	public function admin_page_wpo_images_smush() {
95	$options = Updraft_Smush_Manager()->get_smush_options();
96	$custom = 100 == $options['image_quality'] \|\| 90 == $options['image_quality'] ? false : true;
97	$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom));
98	}
99
100	public static function instance() {
101	if (empty(self::$_instance)) {
102	self::$_instance = new self();
103	}
104	return self::$_instance;
105	}
106
107	public static function get_optimizer() {
108	if (empty(self::$_optimizer_instance)) {
109	if (!class_exists('WP_Optimizer')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-wp-optimizer.php');
110	self::$_optimizer_instance = new WP_Optimizer();
111	}
112	return self::$_optimizer_instance;
113	}
114
115	public static function get_options() {
116	if (empty(self::$_options_instance)) {
117	if (!class_exists('WP_Optimize_Options')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-wp-optimize-options.php');
118	self::$_options_instance = new WP_Optimize_Options();
119	}
120	return self::$_options_instance;
121	}
122
123	public static function get_notices() {
124	if (empty(self::$_notices_instance)) {
125	if (!class_exists('WP_Optimize_Notices')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/wp-optimize-notices.php');
126	self::$_notices_instance = new WP_Optimize_Notices();
127	}
128	return self::$_notices_instance;
129	}
130
131	/**
132	* Returns instance if WPO_Page_Cache class.
133	*
134	* @return WPO_Page_Cache
135	*/
136	public function get_page_cache() {
137	if (!class_exists('WPO_Page_Cache')) include_once(WPO_PLUGIN_MAIN_PATH.'/cache/class-wpo-page-cache.php');
138
139	return WPO_Page_Cache::instance();
140	}
141
142	/**
143	* Create instance of WP_Optimize_Browser_Cache.
144	*
145	* @return WP_Optimize_Browser_Cache
146	*/
147	public static function get_browser_cache() {
148	if (empty(self::$_browser_cache)) {
149	if (!class_exists('WP_Optimize_Browser_Cache')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-wp-optimize-browser-cache.php');
150	self::$_browser_cache = new WP_Optimize_Browser_Cache();
151	}
152	return self::$_browser_cache;
153	}
154
155	/**
156	* Returns WP_Optimize_Database_Information instance.
157	*
158	* @return WP_Optimize_Database_Information
159	*/
160	public function get_db_info() {
161	if (empty(self::$_db_info)) {
162	if (!class_exists('WP_Optimize_Database_Information')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/wp-optimize-database-information.php');
163	self::$_db_info = new WP_Optimize_Database_Information();
164	}
165	return self::$_db_info;
166	}
167
168	/**
169	* Returns instance of WP_Optimize_Gzip_Compression.
170	*
171	* @return WP_Optimize_Gzip_Compression
172	*/
173	static public function get_gzip_compression() {
174	if (empty(self::$_gzip_compression)) {
175	if (!class_exists('WP_Optimize_Gzip_Compression')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-wp-optimize-gzip-compression.php');
176	self::$_gzip_compression = new WP_Optimize_Gzip_Compression();
177	}
178	return self::$_gzip_compression;
179	}
180
181	/**
182	* Create instance of WP_Optimize_Htaccess.
183	*
184	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
185	* @return WP_Optimize_Htaccess
186	*/
187	public static function get_htaccess($htaccess_file = '') {
188	if (!class_exists('WP_Optimize_Cache')) {
189	include_once(WPO_PLUGIN_MAIN_PATH . '/includes/class-wp-optimize-htaccess.php');
190	}
191
192	return new WP_Optimize_Htaccess($htaccess_file);
193	}
194
195	/**
196	* Return instance of Updraft_Logger
197	*
198	* @return Updraft_Logger
199	*/
200	public static function get_logger() {
201	if (empty(self::$_logger_instance)) {
202	include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-updraft-logger.php');
203	self::$_logger_instance = new Updraft_Logger();
204	}
205	return self::$_logger_instance;
206	}
207
208	/**
209	* Enqueue scripts and styles on WP-Optimize pages.
210	*/
211	public function admin_enqueue_scripts() {
212	$current_screen = get_current_screen();
213	// load scripts and styles only on WP-Optimize pages.
214	if (!preg_match('/wp\-optimize/i', $current_screen->id)) return;
215
216	$enqueue_version = (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
217	$min_or_not = (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
218	$min_or_not_internal = (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-'. str_replace('.', '-', WPO_VERSION). '.min';
219
220	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
221
222	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
223	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('smush-js'), $enqueue_version);
224	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'smush-js'), $enqueue_version);
225	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
226	// Using tablesorter to help with organising the DB size on Table Information
227	// https://github.com/Mottie/tablesorter
228	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery'), $enqueue_version);
229
230	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
231
232	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
233
234	$js_variables = $this->wpo_js_translations();
235	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
236
237	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
238
239	do_action('wpo_premium_scripts_styles', $min_or_not, $enqueue_version);
240	}
241
242	/**
243	* Load Task Manager
244	*/
245	public function get_task_manager() {
246	include_once(WPO_PLUGIN_MAIN_PATH.'/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
247
248	Updraft_Tasks_Activation::check_updates();
249
250	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
251	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
252	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
253
254	include_once(WPO_PLUGIN_MAIN_PATH . '/includes/class-updraft-smush-task.php');
255	include_once(WPO_PLUGIN_MAIN_PATH . '/includes/class-updraft-smush-manager.php');
256
257	return Updraft_Smush_Manager();
258	}
259
260	/**
261	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
262	*
263	* @returns Boolean
264	*/
265	public static function is_premium() {
266	if (file_exists(WPO_PLUGIN_MAIN_PATH.'/premium.php') && function_exists('WP_Optimize_Premium')) {
267	$wp_optimize_premium = WP_Optimize_Premium();
268	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
269	}
270	return false;
271	}
272
273	/**
274	* 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.
275	*
276	* @return bool
277	*/
278	public function is_apache_server() {
279	global $is_apache;
280	return $is_apache;
281	}
282
283	/**
284	* Check if Apache module or modules active.
285	*
286	* @param string\|array $module - single Apache module name or list of Apache module names.
287	*
288	* @return bool\|null - if null, the result was indeterminate
289	*/
290	public function is_apache_module_loaded($module) {
291	if (!$this->is_apache_server()) return false;
292
293	if (!function_exists('apache_get_modules')) return null;
294
295	$module_loaded = true;
296
297	if (is_array($module)) {
298	foreach ($module as $single_module) {
299	if (!in_array($single_module, apache_get_modules())) {
300	$module_loaded = false;
301	break;
302	}
303	}
304	} else {
305	$module_loaded = in_array($module, apache_get_modules());
306	}
307
308	return $module_loaded;
309	}
310
311	/**
312	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
313	*/
314	public function plugins_loaded() {
315
316	if (is_multisite()) {
317	add_action('network_admin_menu', array($this, 'admin_menu'));
318	}
319
320	// Run Premium loader if it exists
321	if (file_exists(WPO_PLUGIN_MAIN_PATH.'/premium.php') && !class_exists('WP_Optimize_Premium')) {
322	include_once(WPO_PLUGIN_MAIN_PATH.'/premium.php');
323	}
324
325	// load defaults
326	WP_Optimize()->get_options()->set_default_options();
327
328	// Initialize loggers.
329	$this->setup_loggers();
330
331	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
332	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
333	deactivate_plugins($free_plugin);
334
335	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
336	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
337	file_put_contents(trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php', '');
338	}
339
340	// Registers the notice letting the user know it cannot be active if premium is active.
341	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
342	return;
343	}
344
345	// Loads the task manager
346	$this->get_task_manager();
347
348	// Loads the language file.
349	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
350
351	// Load page cache.
352	$this->get_page_cache();
353	$this->init_page_cache();
354	}
355
356	/**
357	* Check whether one of free/Premium is active (whether it is this instance or not)
358	*
359	* @param String $which - 'free' or 'premium'
360	*
361	* @return String\|Boolean - plugin path (if installed) or false if not
362	*/
363	private function is_active($which = 'free') {
364	$active_plugins = $this->get_active_plugins();
365	foreach ($active_plugins as $file) {
366	if ('wp-optimize.php' == basename($file)) {
367	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
368	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
369	}
370	}
371	return false;
372	}
373
374	/**
375	* Gets an array of plugins active on either the current site, or site-wide
376	*
377	* @return Array - a list of plugin paths (relative to the plugin directory)
378	*/
379	private function get_active_plugins() {
380
381	// Gets all active plugins on the current site
382	$active_plugins = get_option('active_plugins');
383
384	if (is_multisite()) {
385	$network_active_plugins = get_site_option('active_sitewide_plugins');
386	if (!empty($network_active_plugins)) {
387	$network_active_plugins = array_keys($network_active_plugins);
388	$active_plugins = array_merge($active_plugins, $network_active_plugins);
389	}
390	}
391
392	return $active_plugins;
393	}
394
395	/**
396	* This function checks whether a specific plugin is installed, and returns information about it
397	*
398	* @param string $name Specify "Plugin Name" to return details about it.
399	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
400	*/
401	public function is_installed($name) {
402
403	// Needed to have the 'get_plugins()' function
404	include_once(ABSPATH.'wp-admin/includes/plugin.php');
405
406	// Gets all plugins available
407	$get_plugins = get_plugins();
408
409	$active_plugins = $this->get_active_plugins();
410
411	$plugin_info['installed'] = false;
412	$plugin_info['active'] = false;
413
414	// Loops around each plugin available.
415	foreach ($get_plugins as $key => $value) {
416	// If the plugin name matches that of the specified name, it will gather details.
417	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
418	$plugin_info['installed'] = true;
419	$plugin_info['name'] = $key;
420	$plugin_info['version'] = $value['Version'];
421	if (in_array($key, $active_plugins)) {
422	$plugin_info['active'] = true;
423	}
424	break;
425	}
426	return $plugin_info;
427	}
428
429	/**
430	* This is a notice to show users that premium is installed
431	*/
432	public function show_admin_notice_premium() {
433	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
434	if (isset($_GET['activate'])) unset($_GET['activate']);
435	}
436
437	/**
438	* Show update to Premium notice for non-premium multisite.
439	*/
440	public function show_multisite_update_to_premium_notice() {
441	if (!is_multisite() \|\| self::is_premium()) return;
442
443	echo '<p><a href="'.$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>';
444	}
445
446	public function admin_init() {
447	$pagenow = $GLOBALS['pagenow'];
448
449	$this->register_template_directories();
450
451	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
452	$options = $this->get_options();
453
454	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
455
456	if (file_exists(WPO_PLUGIN_MAIN_PATH . '/index.html')) {
457	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . '/index.html');
458	$installed_for = (time() - $installed);
459	}
460
461	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
462	add_action('all_admin_notices', array($this, 'show_admin_notice_upgradead'));
463	}
464	}
465
466	$this->install_or_update_notice = include_once WPO_PLUGIN_MAIN_PATH . 'includes/class-wp-optimize-install-or-update-notice.php';
467	}
468
469	public function show_admin_notice_upgradead() {
470	$this->include_template('notices/thanks-for-using-main-dash.php');
471	}
472
473	public function capability_required() {
474	return apply_filters('wp_optimize_capability_required', 'manage_options');
475	}
476
477	public function wp_optimize_ajax_handler() {
478	$nonce = empty($_POST['nonce']) ? '' : $_POST['nonce'];
479
480	if (!wp_verify_nonce($nonce, 'wp-optimize-ajax-nonce') \|\| empty($_POST['subaction'])) die('Security check');
481
482	$subaction = $_POST['subaction'];
483	$data = isset($_POST['data']) ? $_POST['data'] : null;
484
485	if (!current_user_can($this->capability_required())) die('Security check');
486
487	// Currently the settings are only available to network admins.
488	if (is_multisite() && !current_user_can('manage_network_options')) {
489	/**
490	* Filters the commands allowed to the subsite admins. Other commands are only available to network admin. Only used in a multisite context.
491	*/
492	$allowed_commands = apply_filters('wpo_multisite_allowed_commands', array('check_server_status', 'compress_single_image', 'restore_single_image'));
493	if (!in_array($subaction, $allowed_commands)) return array(
494	'result' => false,
495	'error_code' => 'update_failed',
496	'error_message' => __('Options can only be saved by network admin', 'wp-optimize')
497	);
498	}
499
500	$wp_optimize = $this;
501	$optimizer = $this->get_optimizer();
502	$options = $this->get_options();
503
504	$results = array();
505
506	// Some commands that are available via AJAX only.
507	if (in_array($subaction, array('dismiss_dash_notice_until', 'dismiss_season'))) {
508	$options->update_option($subaction, (time() + 366 * 86400));
509	} elseif (in_array($subaction, array('dismiss_page_notice_until', 'dismiss_notice'))) {
510	$options->update_option($subaction, (time() + 84 * 86400));
511	} else {
512	// Other commands, available for any remote method.
513	if (!class_exists('WP_Optimize_Commands')) include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-commands.php');
514	if (!class_exists('WP_Optimize_Cache_Commands')) include_once(WPO_PLUGIN_MAIN_PATH . 'cache/class-cache-commands.php');
515
516	$commands = new WP_Optimize_Commands();
517	$cache_commands = new WP_Optimize_Cache_Commands();
518
519	// check if called command not in main commands class and exist in cache commands class then change class.
520	if (!is_callable(array($commands, $subaction)) && is_callable(array($cache_commands, $subaction))) {
521	$commands = $cache_commands;
522	}
523
524	if (!is_callable(array($commands, $subaction))) {
525	error_log("WP-Optimize: ajax_handler: no such command (".$subaction.")");
526	die('No such command');
527	} else {
528	$results = call_user_func(array($commands, $subaction), $data);
529
530	// clean status box content, it broke json sometimes.
531	if (isset($results['status_box_contents'])) {
532	$results['status_box_contents'] = str_replace(array("\n", "\t"), '', $results['status_box_contents']);
533	}
534
535	if (is_wp_error($results)) {
536	$results = array(
537	'result' => false,
538	'error_code' => $results->get_error_code(),
539	'error_message' => $results->get_error_message(),
540	'error_data' => $results->get_error_data(),
541	);
542	}
543
544	// if nothing was returned for some reason, set as result null.
545	if (empty($results)) {
546	$results = array(
547	'result' => null
548	);
549	}
550	}
551	}
552
553	$result = json_encode($results);
554
555	// Requires PHP 5.3+
556	$json_last_error = function_exists('json_last_error') ? json_last_error() : false;
557
558	// if json_encode returned error then return error.
559	if ($json_last_error) {
560	$result = array(
561	'result' => false,
562	'error_code' => $json_last_error,
563	'error_message' => 'json_encode error : '.$json_last_error,
564	'error_data' => '',
565	);
566
567	$result = json_encode($result);
568	}
569
570	echo $result;
571
572	die;
573	}
574
575	/**
576	* Builds the Tabs that should be displayed
577	*
578	* @return array Returns all tabs specified
579	*/
580	public function get_tabs($page) {
581	// define tabs for pages.
582	$pages_tabs = array(
583	'WP-Optimize' => array('optimize' => __('Optimizations', 'wp-optimize'), 'tables' => __('Tables', 'wp-optimize')),
584	'wpo_images' => array(
585	'smush' => __('Compress images', 'wp-optimize'),
586	'unused' => __('Unused images and sizes', 'wp-optimize').'<span class="premium-only">Premium</span>',
587	'lazyload' => __('Lazy-load', 'wp-optimize').'<span class="premium-only">Premium</span>',
588	),
589	'wpo_cache' => array(
590	'cache' => __('Page cache', 'wp-optimize'),
591	'preload' => __('Preload', 'wp-optimize'),
592	'advanced' => __('Advanced settings', 'wp-optimize'),
593	'gzip' => __('Gzip compression', 'wp-optimize'),
594	'settings' => __('Static file headers', 'wp-optimize') // Adds a settings tab
595	),
596	'wpo_settings' => array(
597	'settings' => array(
598	'title' => __('Settings', 'wp-optimize'),
599	),
600	),
601	'wpo_support' => array('support' => __('Support / FAQs', 'wp-optimize')),
602	'wpo_mayalso' => array('may_also' => __('Premium / Plugin family', 'wp-optimize')),
603	);
604
605	$tabs = (array_key_exists($page, $pages_tabs)) ? $pages_tabs[$page] : array();
606
607	return apply_filters('wp_optimize_admin_page_'.$page.'_tabs', $tabs);
608	}
609
610	/**
611	* Main page structure.
612	*/
613	public function display_admin() {
614	$capability_required = $this->capability_required();
615
616	if (!current_user_can($capability_required) \|\| (!$this->can_run_optimizations() && !$this->can_manage_options())) {
617	echo "Permission denied.";
618	return;
619	}
620
621	$this->register_admin_content();
622
623	echo '<div id="wp-optimize-wrap">';
624
625	$this->include_template('admin-page-header.php', false);
626
627	do_action('wpo_admin_after_header');
628
629	echo '<div id="actions-results-area"></div>';
630
631	$pages = $this->get_submenu_items();
632
633	foreach ($pages as $page) {
634	if (isset($page['menu_slug'])) {
635	$this->display_admin_page($page['menu_slug']);
636	}
637	}
638
639	// closes main plugin wrapper div. #wp-optimize-wrap
640	echo '</div><!-- END #wp-optimize-wrap -->';
641
642	}
643
644	/**
645	* Prepare and display admin page with $page id.
646	*
647	* @param string $page wp-optimize page id i.e. dashboard, database, images, cache, ...
648	*/
649	public function display_admin_page($page) {
650
651	$active_page = !empty($_REQUEST['page']) ? $_REQUEST['page'] : '';
652
653	echo '<div class="wpo-page' . ($active_page == $page ? ' active' : '') . '" data-whichpage="'.$page.'">';
654
655	echo '<div class="wpo-main">';
656
657	// get defined tabs for $page.
658	$tabs = $this->get_tabs($page);
659
660	// if no tabs defined for $page then use $page as $active_tab for load template, doing related actions e t.c.
661	if (empty($tabs)) {
662	$active_tab = $page;
663	} else {
664	$tab_keys = array_keys($tabs);
665	$default_tab = apply_filters('wp_optimize_admin_'.$page.'_default_tab', $tab_keys[0]);
666	$active_tab = isset($_GET['tab']) ? substr($_GET['tab'], 12) : $default_tab;
667	if (!in_array($active_tab, array_keys($tabs))) $active_tab = $default_tab;
668	}
669
670	do_action('wp_optimize_admin_page_'.$page, $active_tab);
671
672	// if tabs defined then display
673	if (!empty($tabs)) {
674	$this->include_template('admin-page-header-tabs.php', false, array('page' => $page, 'active_tab' => $active_tab, 'tabs' => $tabs, 'wpo_is_premium' => self::is_premium()));
675	}
676
677	foreach ($tabs as $tab_id => $tab_description) {
678	// output wrap div for tab with id #wp-optimize-nav-tab-contents-'.$page.'-'.$tab_id
679	echo '<div class="wp-optimize-nav-tab-contents" id="wp-optimize-nav-tab-'.$page.'-'.$tab_id.'-contents" '.(($tab_id == $active_tab) ? '' : 'style="display:none;"').'>';
680
681	echo '<div class="postbox wpo-tab-postbox">';
682	// call action for generate tab content.
683
684	do_action('wp_optimize_admin_page_'.$page.'_'.$tab_id);
685
686	// closes postbox.
687	echo '</div><!-- END .postbox -->';
688	// closes tab wrapper.
689	echo '</div><!-- END .wp-optimize-nav-tab-contents -->';
690	}
691
692	echo '</div><!-- END .wpo-main -->';
693
694	do_action('wp_optimize_admin_after_page_'.$page, $active_tab);
695
696	echo '</div><!-- END .wpo-page -->';
697
698	}
699
700	/**
701	* Define required actions for admin pages.
702	*/
703	public function register_admin_content() {
704	/**
705	* SETTINGS
706	*/
707	add_action('wp_optimize_admin_page_wpo_settings_settings', array($this, 'output_dashboard_settings_tab'), 20);
708
709	/**
710	* Premium / other plugins
711	*/
712	add_action('wp_optimize_admin_page_wpo_mayalso_may_also', array($this, 'output_dashboard_other_plugins_tab'), 20);
713
714	/**
715	* DATABASE
716	*/
717	add_action('wp_optimize_admin_page_WP-Optimize_optimize', array($this, 'output_database_optimize_tab'), 20);
718
719	add_action('wp_optimize_admin_page_WP-Optimize_tables', array($this, 'output_database_tables_tab'), 20);
720
721	/**
722	* CACHE
723	*/
724
725	add_action('wp_optimize_admin_page_wpo_cache_cache', array($this, 'output_page_cache_tab'), 20);
726	add_action('wp_optimize_admin_page_wpo_cache_preload', array($this, 'output_page_cache_preload_tab'), 20);
727	add_action('wp_optimize_admin_page_wpo_cache_advanced', array($this, 'output_page_cache_advanced_tab'), 20);
728	add_action('wp_optimize_admin_page_wpo_cache_gzip', array($this, 'output_cache_gzip_tab'), 20);
729	add_action('wp_optimize_admin_page_wpo_cache_settings', array($this, 'output_cache_settings_tab'), 20);
730
731	/**
732	* SUPPORT
733	*/
734	add_action('wp_optimize_admin_page_wpo_support_support', array($this, 'output_dashboard_support_tab'), 20);
735	// Display Support page.
736
737	if (!self::is_premium()) {
738	/**
739	* Add action for display Images > Unused images and sizes tab.
740	*/
741	add_action('wp_optimize_admin_page_wpo_images_unused', array($this, 'admin_page_wpo_images_unused'));
742
743	/**
744	* Add action for display Dashboard > Lazyload tab.
745	*/
746	add_action('wp_optimize_admin_page_wpo_images_lazyload', array($this, 'admin_page_wpo_images_lazyload'));
747	}
748	}
749
750	/**
751	* Dashboard settings
752	*/
753	public function output_dashboard_settings_tab() {
754	$options = $this->get_options();
755
756	if ('POST' == $_SERVER['REQUEST_METHOD']) {
757	// Nonce check.
758	check_admin_referer('wpo_settings');
759
760	$output = $options->save_settings($_POST);
761
762	if (isset($_POST['wp-optimize-settings'])) {
763	// save settings request sent.
764	$output = $options->save_settings($_POST);
765	}
766
767	$this->wpo_render_output_messages($output);
768	}
769
770	if ($this->can_manage_options()) {
771	$this->include_template('settings/settings.php');
772	} else {
773	$this->prevent_manage_options_info();
774	}
775	}
776
777	/**
778	* Dashboard support tab
779	*/
780	public function output_dashboard_support_tab() {
781	WP_Optimize()->include_template('settings/support-and-faqs.php');
782	}
783
784	/**
785	* Dashboard Other plugins / premium tab
786	*/
787	public function output_dashboard_other_plugins_tab() {
788	$this->include_template('settings/may-also-like.php');
789	}
790
791	/**
792	* Gzip tab
793	*/
794	public function output_page_cache_tab() {
795	$wpo_cache = $this->get_page_cache();
796	$wpo_cache_options = $wpo_cache->config->get();
797	$display = $wpo_cache_options['enable_page_caching'] ? "style='display:block'" : "style='display:none'";
798
799	WP_Optimize()->include_template('cache/page-cache.php', false, array(
800	'wpo_cache' => $wpo_cache,
801	'active_cache_plugins' => WP_Optimize_Detect_Cache_Plugins::instance()->get_active_cache_plugins(),
802	'wpo_cache_options' => $wpo_cache_options,
803	'cache_size' => $this->get_page_cache()->get_cache_size(),
804	'display' => $display
805	));
806	}
807
808	/**
809	* Preload tab
810	*/
811	public function output_page_cache_preload_tab() {
812	$wpo_cache = $this->get_page_cache();
813	$wpo_cache_options = $wpo_cache->config->get();
814	$wpo_cache_preloader = WP_Optimize_Page_Cache_Preloader::instance();
815	$is_running = $wpo_cache_preloader->is_running();
816	$status = $wpo_cache_preloader->get_status_info();
817
818	WP_Optimize()->include_template('cache/page-cache-preload.php', false, array(
819	'wpo_cache_options' => $wpo_cache_options,
820	'is_running' => $is_running,
821	'status_message' => isset($status['message']) ? $status['message'] : '',
822	'schedule_options' => array(
823	'wpo_use_cache_lifespan' => __('Same as cache lifespan', 'wp-optimize'),
824	'wpo_daily' => __('Daily', 'wp-optimize'),
825	'wpo_weekly' => __('Weekly', 'wp-optimize'),
826	'wpo_fortnightly' => __('Fortnightly', 'wp-optimize'),
827	'wpo_monthly' => __('Monthly (approx. - every 30 days)', 'wp-optimize')
828	)
829	));
830	}
831
832	/**
833	* Advanced tab
834	*/
835	public function output_page_cache_advanced_tab() {
836	$wpo_cache = $this->get_page_cache();
837	$wpo_cache_options = $wpo_cache->config->get();
838
839	$cache_exception_urls = is_array($wpo_cache_options['cache_exception_urls']) ? join("\n", $wpo_cache_options['cache_exception_urls']) : '';
840	$cache_exception_cookies = is_array($wpo_cache_options['cache_exception_cookies']) ? join("\n", $wpo_cache_options['cache_exception_cookies']) : '';
841	$cache_exception_browser_agents = is_array($wpo_cache_options['cache_exception_browser_agents']) ? join("\n", $wpo_cache_options['cache_exception_browser_agents']) : '';
842
843	WP_Optimize()->include_template('cache/page-cache-advanced.php', false, array(
844	'wpo_cache' => $this->get_page_cache(),
845	'wpo_cache_options' => $wpo_cache_options,
846	'cache_exception_urls' => $cache_exception_urls,
847	'cache_exception_cookies' => $cache_exception_cookies,
848	'cache_exception_browser_agents' => $cache_exception_browser_agents,
849	));
850	}
851
852	/**
853	* Gzip tab
854	*/
855	public function output_cache_gzip_tab() {
856	$wpo_gzip_compression = $this->get_gzip_compression();
857	$wpo_gzip_compression_enabled = $wpo_gzip_compression->is_gzip_compression_enabled(true);
858
859	WP_Optimize()->include_template('cache/gzip-compression.php', false, array(
860	'wpo_gzip_compression_enabled' => $wpo_gzip_compression_enabled,
861	'wpo_gzip_compression_settings_added' => $wpo_gzip_compression->is_gzip_compression_section_exists(),
862	'info_link' => 'https://getwpo.com/gzip-compression-explained/',
863	'faq_link' => 'https://getwpo.com/gzip-faq-link/',
864	'class_name' => (!is_wp_error($wpo_gzip_compression_enabled) && $wpo_gzip_compression_enabled ? 'wpo-enabled' : 'wpo-disabled')
865	));
866	}
867
868	/**
869	* Cache tab
870	*/
871	public function output_cache_settings_tab() {
872
873	$wpo_browser_cache = $this->get_browser_cache();
874	$wpo_browser_cache_enabled = $wpo_browser_cache->is_enabled();
875
876	WP_Optimize()->include_template('cache/browser-cache.php', false, array(
877	'wpo_browser_cache_enabled' => $wpo_browser_cache_enabled,
878	'wpo_browser_cache_settings_added' => $wpo_browser_cache->is_browser_cache_section_exists(),
879	'class_name' => (true === $wpo_browser_cache_enabled ? 'wpo-enabled' : 'wpo-disabled'),
880	'wpo_browser_cache_expire_days' => $this->get_options()->get_option('browser_cache_expire_days', '28'),
881	'wpo_browser_cache_expire_hours' => $this->get_options()->get_option('browser_cache_expire_hours', '0'),
882	'info_link' => 'https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching',
883	'faq_link' => 'https://www.digitalocean.com/community/tutorials/how-to-implement-browser-caching-with-nginx-s-header-module-on-ubuntu-16-04',
884	));
885	}
886
887	/**
888	* Outputs the DB optimize Tab
889	*/
890	public function output_database_optimize_tab() {
891	$optimizer = $this->get_optimizer();
892	$options = $this->get_options();
893
894	// check if nonce passed.
895	$nonce_passed = (!empty($_REQUEST['_wpnonce']) && wp_verify_nonce($_REQUEST['_wpnonce'], 'wpo_optimization')) ? true : false;
896
897	// save options.
898	if ($nonce_passed && isset($_POST['wp-optimize'])) $options->save_sent_manual_run_optimization_options($_POST, true);
899
900	$optimize_db = ($nonce_passed && isset($_POST["optimize-db"])) ? true : false;
901
902	$optimization_results = (($nonce_passed) ? $optimizer->do_optimizations($_POST) : false);
903
904	// display optimizations table or restricted access message.
905	if ($this->can_run_optimizations()) {
906	$this->include_template('database/optimize-table.php', false, array('optimize_db' => $optimize_db, 'optimization_results' => $optimization_results ));
907	} else {
908	$this->prevent_run_optimizations_message();
909	}
910	}
911
912	/**
913	* Outputs the DB Tables Tab
914	*/
915	public function output_database_tables_tab() {
916	// check if nonce passed.
917	$nonce_passed = (!empty($_REQUEST['_wpnonce']) && wp_verify_nonce($_REQUEST['_wpnonce'], 'wpo_optimization')) ? true : false;
918
919	$optimize_db = ($nonce_passed && isset($_POST["optimize-db"])) ? true : false;
920
921	if ($this->can_run_optimizations()) {
922	$this->include_template('database/tables.php', false, array('optimize_db' => $optimize_db));
923	} else {
924	$this->prevent_run_optimizations_message();
925	}
926	}
927
928	/**
929	* Runs upon the WP action admin_page_wpo_images_unused
930	*/
931	public function admin_page_wpo_images_unused() {
932	WP_Optimize()->include_template('images/unused.php');
933	}
934
935	/**
936	* Runs upon the WP action wp_optimize_admin_page_wpo_images_lazyload
937	*/
938	public function admin_page_wpo_images_lazyload() {
939	WP_Optimize()->include_template('images/lazyload.php');
940	}
941
942	/**
943	* Returns array of translations used in javascript code.
944	*
945	* @return array
946	*/
947	public function wpo_js_translations() {
948	return apply_filters('wpo_js_translations', array(
949	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
950	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
951	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
952	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
953	'cancel' => __('Cancel', 'wp-optimize'),
954	'enable' => __('Enable', 'wp-optimize'),
955	'disable' => __('Disable', 'wp-optimize'),
956	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
957	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
958	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
959	'table_was_not_repaired' => __('%s was not repaired. For more details, please check the logs (configured in your logging destinations settings).', 'wp-optimize'),
960	'are_you_sure_you_want_to_remove_this_table' => __('WARNING - some plugins might not be detected as installed or activated if they are in unknown folders (for example premium plugins).', 'wp-optimize').' '.__('Only delete a table if you are sure of what you are doing, and after taking a backup.', 'wp-optimize')." \r".__('Are you sure you want to remove this table?', 'wp-optimize'),
961	'table_was_not_deleted' => __('%s was not deleted. For more details, please check your logs configured in logging destinations settings.', 'wp-optimize'),
962	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
963	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
964	'update' => __('Update', 'wp-optimize'),
965	'run_now' => __('Run now', 'wp-optimize'),
966	'starting_preload' => __('Started preload...', 'wp-optimize'),
967	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
968	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
969	'number_of_files' => __('Number of files:', 'wp-optimize'),
970	'spinner_src' => esc_attr(admin_url('images/spinner-2x.gif')),
971	'sites' => $this->get_sites(),
972	));
973	}
974
975	public function wpo_admin_bar() {
976	$wp_admin_bar = $GLOBALS['wp_admin_bar'];
977
978	if (defined('WPOPTIMIZE_ADMINBAR_DISABLE') && WPOPTIMIZE_ADMINBAR_DISABLE) return;
979
980	// Show menu item in top bar only for super admins.
981	if (is_multisite() & !is_super_admin(get_current_user_id())) return;
982
983	// Add a link called at the top admin bar.
984	$args = array(
985	'id' => 'wp-optimize-node',
986	'title' => apply_filters('wpoptimize_admin_node_title', 'WP-Optimize')
987	);
988	$wp_admin_bar->add_node($args);
989
990	$pages = $this->get_submenu_items();
991
992	foreach ($pages as $page_id => $page) {
993
994	if (!isset($page['create_submenu']) \|\| !$page['create_submenu']) {
995	if (isset($page['icon']) && 'separator' == $page['icon']) {
996	$args = array(
997	'id' => 'wpo-separator-'.$page_id,
998	'parent' => 'wp-optimize-node',
999	'meta' => array(
1000	'class' => 'separator',
1001	),
1002	);
1003	$wp_admin_bar->add_node($args);
1004	}
1005	continue;
1006	}
1007
1008	// 'menu_slug' => 'WP-Optimize',
1009
1010	$menu_page_url = menu_page_url($page['menu_slug'], false);
1011
1012	if (is_multisite()) {
1013	$menu_page_url = network_admin_url('admin.php?page='.$page['menu_slug']);
1014	}
1015
1016	$args = array(
1017	'id' => 'wpoptimize_admin_node_'.$page_id,
1018	'title' => $page['menu_title'],
1019	'parent' => 'wp-optimize-node',
1020	'href' => $menu_page_url,
1021	);
1022	$wp_admin_bar->add_node($args);
1023	}
1024
1025	}
1026
1027	/**
1028	* Add settings link on plugin page
1029	*
1030	* @param string $links Passing through the URL to be used within the HREF.
1031	* @return string Returns the Links.
1032	*/
1033	public function plugin_settings_link($links) {
1034
1035	$admin_page_url = $this->get_options()->admin_page_url();
1036	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
1037
1038	if (false == self::is_premium()) {
1039	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
1040	array_unshift($links, $premium_link);
1041	}
1042
1043	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
1044	array_unshift($links, $settings_link);
1045
1046	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
1047	array_unshift($links, $optimize_link);
1048	return $links;
1049	}
1050
1051	/**
1052	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
1053	*
1054	* @param string $content String for output to column
1055	* @param object $table_info Object with table info.
1056	*
1057	* @return string
1058	*/
1059	public function tables_list_additional_column_data($content, $table_info) {
1060	if ($table_info->is_needing_repair) {
1061	$content .= '<div class="wpo_button_wrap">'
1062	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
1063	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
1064	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1065	. '</div>';
1066	}
1067
1068	// table belongs to plugin.
1069	if ($table_info->can_be_removed) {
1070	$content .= '<div>'
1071	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
1072	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
1073	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1074	. '</div>';
1075	}
1076
1077	return $content;
1078	}
1079
1080	/**
1081	* Initialize WP-Optimize page cache.
1082	*/
1083	public function init_page_cache() {
1084	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
1085	$this->get_page_cache()->enable();
1086	}
1087	}
1088
1089	/**
1090	* Schedules cron event based on selected schedule type
1091	*
1092	* @return void
1093	*/
1094	public function cron_activate() {
1095	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
1096
1097	$options = $this->get_options();
1098
1099	if ($options->get_option('schedule') === false) {
1100	$options->set_default_options();
1101	} else {
1102	if ('true' == $options->get_option('schedule')) {
1103	if (!wp_next_scheduled('wpo_cron_event2')) {
1104	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
1105
1106	// Backward compatibility
1107	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
1108
1109	$this_time = (86400 * 7);
1110
1111	switch ($schedule_type) {
1112	case "wpo_daily":
1113	$this_time = 86400;
1114	break;
1115
1116	case "wpo_weekly":
1117	$this_time = (86400 * 7);
1118	break;
1119
1120	case "wpo_fortnightly":
1121	$this_time = (86400 * 14);
1122	break;
1123
1124	case "wpo_monthly":
1125	$this_time = (86400 * 30);
1126	break;
1127	}
1128
1129	add_action('wpo_cron_event2', array($this, 'cron_action'));
1130	wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
1131	WP_Optimize()->log('running wp_schedule_event()');
1132	}
1133	}
1134	}
1135	}
1136
1137	/**
1138	* Clears all cron events
1139	*
1140	* @return void
1141	*/
1142	public function wpo_cron_deactivate() {
1143	wp_clear_scheduled_hook('wpo_cron_event2');
1144	}
1145
1146	/**
1147	* Scheduler public functions to update schedulers
1148	*
1149	* @param array $schedules An array of schedules being passed.
1150	* @return array An array of schedules being returned.
1151	*/
1152	public function cron_schedules($schedules) {
1153	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1154	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1155	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1156	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1157	return $schedules;
1158	}
1159
1160	/**
1161	* Returns count of overdue cron jobs.
1162	*
1163	* @return integer
1164	*/
1165	public function howmany_overdue_crons() {
1166	$how_many_overdue = 0;
1167	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1168	$crons = _get_cron_array();
1169	if (is_array($crons)) {
1170	$timenow = time();
1171	foreach ($crons as $jt => $job) {
1172	if ($jt < $timenow) {
1173	$how_many_overdue++;
1174	}
1175	}
1176	}
1177	}
1178	return $how_many_overdue;
1179	}
1180
1181	/**
1182	* Returns warning about overdue crons.
1183	*
1184	* @param int $howmany count of overdue crons
1185	* @return string
1186	*/
1187	public function show_admin_warning_overdue_crons($howmany) {
1188	$ret = '<div class="updated below-h2"><p>';
1189	$ret .= '<strong>'.__('Warning', 'wp-optimize').':</strong> '.sprintf(__('WordPress has a number (%d) of scheduled tasks which are overdue. Unless this is a development site, this probably means that the scheduler in your WordPress install is not working.', 'wp-optimize'), $howmany).' <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>';
1190	$ret .= '</p></div>';
1191	return $ret;
1192	}
1193
1194	public function admin_menu() {
1195
1196	$capability_required = $this->capability_required();
1197
1198	if (!current_user_can($capability_required) \|\| (!$this->can_run_optimizations() && !$this->can_manage_options())) return;
1199
1200	$icon_svg = 'data:image/svg+xml;base64,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';
1201
1202	// Removes the admin menu items on the left WP bar.
1203	if (!is_multisite() \|\| (is_multisite() && is_network_admin())) {
1204	add_menu_page("WP-Optimize", "WP-Optimize", $capability_required, "WP-Optimize", array($this, "display_admin"), $icon_svg);
1205
1206	$sub_menu_items = $this->get_submenu_items();
1207
1208	foreach ($sub_menu_items as $menu_item) {
1209	if ($menu_item['create_submenu']) add_submenu_page('WP-Optimize', $menu_item['page_title'], $menu_item['menu_title'], $capability_required, $menu_item['menu_slug'], $menu_item['function']);
1210	}
1211	}
1212
1213	$options = $this->get_options();
1214
1215	if ($options->get_option('enable-admin-menu', 'false') == 'true') {
1216	add_action('wp_before_admin_bar_render', array($this, 'wpo_admin_bar'));
1217	}
1218
1219	}
1220
1221	/**
1222	* Get the submenu items
1223	*
1224	* @return array
1225	*/
1226	public function get_submenu_items() {
1227	$sub_menu_items = array(
1228	array(
1229	'page_title' => __('Database', 'wp-optimize'),
1230	'menu_title' => __('Database', 'wp-optimize'),
1231	'menu_slug' => 'WP-Optimize',
1232	'function' => array($this, 'display_admin'),
1233	'icon' => 'cloud',
1234	'create_submenu' => true,
1235	'order' => 20,
1236	),
1237	array(
1238	'page_title' => __('Images', 'wp-optimize'),
1239	'menu_title' => __('Images', 'wp-optimize'),
1240	'menu_slug' => 'wpo_images',
1241	'function' => array($this, 'display_admin'),
1242	'icon' => 'images-alt2',
1243	'create_submenu' => true,
1244	'order' => 30,
1245	),
1246	array(
1247	'page_title' => __('Cache', 'wp-optimize'),
1248	'menu_title' => __('Cache', 'wp-optimize'),
1249	'menu_slug' => 'wpo_cache',
1250	'function' => array($this, 'display_admin'),
1251	'icon' => 'archive',
1252	'create_submenu' => true,
1253	'order' => 40,
1254	),
1255	array(
1256	'create_submenu' => false,
1257	'order' => 45,
1258	'icon' => 'separator',
1259	),
1260	array(
1261	'page_title' => __('Settings', 'wp-optimize'),
1262	'menu_title' => __('Settings', 'wp-optimize'),
1263	'menu_slug' => 'wpo_settings',
1264	'function' => array($this, 'display_admin'),
1265	'icon' => 'admin-settings',
1266	'create_submenu' => true,
1267	'order' => 50,
1268	),
1269	array(
1270	'page_title' => __('Support & FAQs', 'wp-optimize'),
1271	'menu_title' => __('Help', 'wp-optimize'),
1272	'menu_slug' => 'wpo_support',
1273	'function' => array($this, 'display_admin'),
1274	'icon' => 'sos',
1275	'create_submenu' => true,
1276	'order' => 60,
1277	),
1278	array(
1279	'page_title' => __('Premium Upgrade', 'wp-optimize'),
1280	'menu_title' => __('Premium Upgrade', 'wp-optimize'),
1281	'menu_slug' => 'wpo_mayalso',
1282	'function' => array($this, 'display_admin'),
1283	'icon' => 'admin-plugins',
1284	'create_submenu' => true,
1285	'order' => 70,
1286	),
1287	);
1288
1289	$sub_menu_items = apply_filters('wp_optimize_sub_menu_items', $sub_menu_items);
1290
1291	usort($sub_menu_items, array($this, 'order_sort'));
1292
1293	return $sub_menu_items;
1294	}
1295
1296	public function order_sort($a, $b) {
1297	if ($a['order'] == $b['order']) return 0;
1298	return ($a['order'] > $b['order']) ? 1 : -1;
1299	}
1300
1301	private function wp_normalize_path($path) {
1302	// Wp_normalize_path is not present before WP 3.9.
1303	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1304	// Taken from WP 4.6.
1305	$path = str_replace('\\', '/', $path);
1306	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1307	if (':' === substr($path, 1, 1)) {
1308	$path = ucfirst($path);
1309	}
1310	return $path;
1311	}
1312
1313	public function get_templates_dir() {
1314	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'/templates'));
1315	}
1316
1317	public function get_templates_url() {
1318	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'/templates');
1319	}
1320
1321	/**
1322	* Return or output view content
1323	*
1324	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1325	* @param Boolean $return_instead_of_echo - what to do with the results
1326	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1327	*
1328	* @return String\|Void
1329	*/
1330	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1331	if ($return_instead_of_echo) ob_start();
1332
1333	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1334	$prefix = $matches[1];
1335	$suffix = $matches[2];
1336	if (isset($this->template_directories[$prefix])) {
1337	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1338	}
1339	}
1340
1341	if (!isset($template_file)) {
1342	$template_file = WPO_PLUGIN_MAIN_PATH.'/templates/'.$path;
1343	}
1344
1345	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1346
1347	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1348
1349	if (!file_exists($template_file)) {
1350	error_log("WP Optimize: template not found: ".$template_file);
1351	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1352	} else {
1353	extract($extract_these);
1354	$wpdb = $GLOBALS['wpdb'];
1355	$wp_optimize = $this;
1356	$optimizer = $this->get_optimizer();
1357	$options = $this->get_options();
1358	$wp_optimize_notices = $this->get_notices();
1359	include $template_file;
1360	}
1361
1362	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1363
1364	if ($return_instead_of_echo) return ob_get_clean();
1365	}
1366
1367	/**
1368	* Build a list of template directories (stored in self::$template_directories)
1369	*/
1370	private function register_template_directories() {
1371
1372	$template_directories = array();
1373
1374	$templates_dir = $this->get_templates_dir();
1375
1376	if ($dh = opendir($templates_dir)) {
1377	while (($file = readdir($dh)) !== false) {
1378	if ('.' == $file \|\| '..' == $file) continue;
1379	if (is_dir($templates_dir.'/'.$file)) {
1380	$template_directories[$file] = $templates_dir.'/'.$file;
1381	}
1382	}
1383	closedir($dh);
1384	}
1385
1386	// Optimal hook for most extensions to hook into.
1387	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1388
1389	}
1390
1391	/**
1392	* Not currently used; needs looking at.
1393	* N.B. The description does not match the actual function
1394	*
1395	* @param integer $date Date of when the optimization was executed.
1396	*/
1397	public function send_email($date) {
1398	ob_start();
1399	// This need to work on - currently not using the parameter values.
1400	$my_time = current_time("timestamp", 0);
1401	$my_date = gmdate(get_option('date_format') . ' ' . get_option('time_format'), $my_time);
1402	$sendto = (!$options->get_option('email-address') ? get_bloginfo('admin_email') : $options->get_option('email-address'));
1403	$subject = get_bloginfo('name').": ".__("Automatic Operation Completed", "wp-optimize")." ".$my_date;
1404
1405	$msg = __("Scheduled optimization was executed at", "wp-optimize")." ".$my_date."\r\n"."\r\n";
1406	$msg .= __("You can safely delete this email.", "wp-optimize")."\r\n";
1407	$msg .= "\r\n";
1408	$msg .= __("Regards,", "wp-optimize")."\r\n";
1409	$msg .= __("WP-Optimize Plugin", "wp-optimize");
1410	ob_end_clean();
1411	}
1412
1413	/**
1414	* Message to debug
1415	*
1416	* @param string $message Message to insert into the log.
1417	* @param array $context array with variables used in $message like in template,
1418	* for ex.
1419	* $message = 'Hello {message}';
1420	* $context = ['message' => 'world']
1421	* 'Hello world' string will be saved in log.
1422	*/
1423	public function log($message, $context = array()) {
1424	$this->get_logger()->debug($message, $context);
1425	}
1426
1427	/**
1428	* Format Bytes Into KB/MB
1429	*
1430	* @param mixed $bytes Number of bytes to be converted.
1431	* @return integer return the correct format size.
1432	*/
1433	public function format_size($bytes) {
1434	if ($bytes > 1073741824) {
1435	return number_format_i18n(($bytes / 1073741824), 2) . ' '.__('GB', 'wp-optimize');
1436	} elseif ($bytes > 1048576) {
1437	return number_format_i18n(($bytes / 1048576), 1) . ' '.__('MB', 'wp-optimize');
1438	} elseif ($bytes > 1024) {
1439	return number_format_i18n(($bytes / 1024), 1) . ' '.__('KB', 'wp-optimize');
1440	} else {
1441	return number_format_i18n($bytes, 0) . ' '.__('bytes', 'wp-optimize');
1442	}
1443	}
1444
1445	/**
1446	* Executed this function on cron event.
1447	*
1448	* @return void
1449	*/
1450	public function cron_action() {
1451
1452	$optimizer = $this->get_optimizer();
1453	$options = $this->get_options();
1454
1455	$this->log('WPO: Starting cron_action()');
1456
1457	if ('true' == $options->get_option('schedule')) {
1458	$this_options = $options->get_option('auto');
1459
1460	$optimizations = $optimizer->get_optimizations();
1461
1462	// Currently the output of the optimizations is not saved/used/logged.
1463	$results = $optimizer->do_optimizations($this_options, 'auto');
1464	}
1465
1466	}
1467
1468	/**
1469	* Schedule cron tasks used by plugin.
1470	*
1471	* @return void
1472	*/
1473	public function schedule_plugin_cron_tasks() {
1474	if (!wp_next_scheduled('wpo_plugin_cron_tasks')) {
1475	wp_schedule_event(current_time("timestamp", 0), 'twicedaily', 'wpo_plugin_cron_tasks');
1476	}
1477
1478	add_action('wpo_plugin_cron_tasks', array($this, 'do_plugin_cron_tasks'));
1479	}
1480
1481	/**
1482	* Do plugin background tasks.
1483	*
1484	* @return void
1485	*/
1486	public function do_plugin_cron_tasks() {
1487	// add tasks here.
1488	}
1489
1490	/**
1491	* This will customize a URL with a correct Affiliate link
1492	* This function can be update to suit any URL as longs as the URL is passed
1493	*
1494	* @param String $url - URL to be check to see if it an updraftplus match.
1495	* @param String $text - Text to be entered within the href a tags.
1496	* @param String $html - Any specific HTML to be added.
1497	* @param String $class - Specify a class for the href (including the attribute label)
1498	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1499	*
1500	* @return String\|void
1501	*/
1502	public function wp_optimize_url($url, $text, $html = '', $class = '', $return_instead_of_echo = false) {
1503	// Check if the URL is UpdraftPlus.
1504	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1505	if ('' != $html) {
1506	$result = '<a '.$class.' href="'.esc_attr($url).'">'.$html.'</a>';
1507	} else {
1508	$result = '<a '.$class.' href="'.esc_attr($url).'">'.htmlspecialchars($text).'</a>';
1509	}
1510	if ($return_instead_of_echo) return $result;
1511	echo $result;
1512	}
1513
1514	/**
1515	* Get an URL with an eventual affiliate ID
1516	*
1517	* @param string $url
1518	* @return string
1519	*/
1520	public function maybe_add_affiliate_params($url) {
1521	// Check if the URL is UpdraftPlus.
1522	if (false !== strpos($url, '//updraftplus.com')) {
1523	// Set URL with Affiliate ID.
1524	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1525
1526	// Apply filters.
1527	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1528	}
1529	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1530	}
1531
1532	/**
1533	* Setup WPO logger(s)
1534	*/
1535	public function setup_loggers() {
1536
1537	$logger = $this->get_logger();
1538	$loggers = $this->wpo_loggers();
1539
1540	if (!empty($loggers)) {
1541	foreach ($loggers as $_logger) {
1542	$logger->add_logger($_logger);
1543	}
1544	}
1545
1546	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1547	}
1548
1549	/**
1550	* Run logger actions after all optimizations done
1551	*/
1552	public function after_optimizations_logger_action() {
1553	$loggers = $this->get_logger()->get_loggers();
1554	if (!empty($loggers)) {
1555	foreach ($loggers as $logger) {
1556	if (is_a($logger, 'Updraft_Email_Logger')) {
1557	$logger->flush_log();
1558	}
1559	}
1560	}
1561	}
1562
1563	/**
1564	* Returns list of WPO loggers instances
1565	* Apply filter wp_optimize_loggers
1566	*
1567	* @return array
1568	*/
1569	public function wpo_loggers() {
1570
1571	$loggers = array();
1572	$loggers_classes_by_id = array();
1573	$options_keys = array();
1574
1575	$loggers_classes = $this->get_loggers_classes();
1576
1577	foreach ($loggers_classes as $logger_class => $source) {
1578	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1579	}
1580
1581	$options = $this->get_options();
1582
1583	$saved_loggers = $options->get_option('logging');
1584	$logger_additional_options = $options->get_option('logging-additional');
1585
1586	// create loggers classes instances.
1587	if (!empty($saved_loggers)) {
1588	// check for previous version options format.
1589	$keys = array_keys($saved_loggers);
1590
1591	// if options stored in old format then reformat it.
1592	if (false == is_numeric($keys[0])) {
1593	$_saved_loggers = array();
1594	foreach ($saved_loggers as $logger_id => $enabled) {
1595	if ($enabled) {
1596	$_saved_loggers[] = $logger_id;
1597	}
1598	}
1599
1600	// fill email with admin.
1601	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1602	$logger_additional_options['updraft_email_logger'] = array(
1603	get_option('admin_email')
1604	);
1605	}
1606
1607	$saved_loggers = $_saved_loggers;
1608	}
1609
1610	foreach ($saved_loggers as $i => $logger_id) {
1611
1612	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1613
1614	$logger_class = $loggers_classes_by_id[$logger_id];
1615
1616	$logger = new $logger_class();
1617
1618	$logger_options = $logger->get_options_list();
1619
1620	if (!empty($logger_options)) {
1621	foreach (array_keys($logger_options) as $option_name) {
1622	if (array_key_exists($option_name, $options_keys)) {
1623	$options_keys[$option_name]++;
1624	} else {
1625	$options_keys[$option_name] = 0;
1626	}
1627
1628	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1629
1630	// if options in old format then get correct value.
1631	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1632	$option_value = array_shift($logger_additional_options[$logger_id]);
1633	}
1634
1635	$logger->set_option($option_name, $option_value);
1636	}
1637	}
1638
1639	// check if logger is active.
1640	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1641
1642	if ($active) {
1643	$logger->enable();
1644	} else {
1645	$logger->disable();
1646	}
1647
1648	$loggers[] = $logger;
1649	}
1650	}
1651
1652	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1653
1654	return $loggers;
1655	}
1656
1657	/**
1658	* Returns associative array with logger class name in a key and path to class file in a value.
1659	*
1660	* @return array
1661	*/
1662	public function get_loggers_classes() {
1663	$loggers_classes = array(
1664	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1665	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1666	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1667	);
1668
1669	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1670
1671	if (!empty($loggers_classes)) {
1672	foreach ($loggers_classes as $logger_class => $logger_file) {
1673	if (!class_exists($logger_class)) {
1674	if (is_file($logger_file)) {
1675	include_once($logger_file);
1676	}
1677	}
1678	}
1679	}
1680
1681	return $loggers_classes;
1682	}
1683
1684	/**
1685	* Returns information about all loggers classes.
1686	*
1687	* @return array
1688	*/
1689	public function get_loggers_classes_info() {
1690	$loggers_classes = $this->get_loggers_classes();
1691
1692	$loggers_classes_info = array();
1693
1694	if (!empty($loggers_classes)) {
1695	foreach (array_keys($loggers_classes) as $logger_class_name) {
1696
1697	if (!class_exists($logger_class_name)) continue;
1698
1699	$logger_id = strtolower($logger_class_name);
1700	$logger_class = new $logger_class_name();
1701
1702	$loggers_classes_info[$logger_id] = array(
1703	'description' => $logger_class->get_description(),
1704	'available' => $logger_class->is_available(),
1705	'allow_multiple' => $logger_class->is_allow_multiple(),
1706	'options' => $logger_class->get_options_list()
1707	);
1708	}
1709	}
1710
1711	return $loggers_classes_info;
1712	}
1713
1714	/**
1715	* Returns true if optimization works in multisite mode
1716	*
1717	* @return boolean
1718	*/
1719	public function is_multisite_mode() {
1720	return (is_multisite() && WP_Optimize()->is_premium());
1721	}
1722
1723	/**
1724	* Returns true if current user can run optimizations.
1725	*
1726	* @return bool
1727	*/
1728	public function can_run_optimizations() {
1729	// we don't check permissions for cron jobs.
1730	if (defined('DOING_CRON') && DOING_CRON) return true;
1731
1732	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1733	return true;
1734	}
1735
1736	/**
1737	* Returns true if current user can manage plugin options.
1738	*
1739	* @return bool
1740	*/
1741	public function can_manage_options() {
1742	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1743	return true;
1744	}
1745
1746	/**
1747	* Output information message for users who have no permissions to run optimizations.
1748	*/
1749	public function prevent_run_optimizations_message() {
1750	$this->include_template('info-message.php', false, array('message' => __('You have no permissions to run optimizations.', 'wp-optimize')));
1751	}
1752
1753	/**
1754	* Output information message for users who have no permissions to manage settings.
1755	*/
1756	public function prevent_manage_options_info() {
1757	$this->include_template('info-message.php', false, array('message' => __('You have no permissions to manage WP-Optimize settings.', 'wp-optimize')));
1758	}
1759
1760	/**
1761	* Returns list of all sites in multisite
1762	*
1763	* @return array
1764	*/
1765	public function get_sites() {
1766	$sites = array();
1767	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1768	if (function_exists('get_sites')) {
1769	$sites = get_sites(array('network_id' => null, 'number' => 999999));
1770	} elseif (function_exists('wp_get_sites')) {
1771	$sites = wp_get_sites(array('network_id' => null, 'limit' => 999999));
1772	}
1773	return $sites;
1774	}
1775
1776	/**
1777	* Output success/error messages from $output array.
1778	*
1779	* @param array $output ['messages' => success messages, 'errors' => error messages]
1780	*/
1781	private function wpo_render_output_messages($output) {
1782	foreach ($output['messages'] as $item) {
1783	echo '<div class="updated fade below-h2"><strong>'.$item.'</strong></div>';
1784	}
1785
1786	foreach ($output['errors'] as $item) {
1787	echo '<div class="error fade below-h2"><strong>'.$item.'</strong></div>';
1788	}
1789	}
1790
1791	/**
1792	* Returns script memory limit in megabytes.
1793	*
1794	* @param bool $memory_limit
1795	* @return int
1796	*/
1797	public function get_memory_limit($memory_limit = false) {
1798	// Returns in megabytes
1799	if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
1800	$memory_limit = rtrim($memory_limit);
1801
1802	return $this->return_bytes($memory_limit);
1803	}
1804
1805	/**
1806	* Returns free memory in bytes.
1807	*
1808	* @return int
1809	*/
1810	public function get_free_memory() {
1811	return $this->get_memory_limit() - memory_get_usage();
1812	}
1813
1814	/**
1815	* Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
1816	*
1817	* @return int memory limit in bytes.
1818	*/
1819	public function get_script_memory_limit() {
1820	$memory_limit = $this->get_memory_limit();
1821
1822	if (defined('WP_MAX_MEMORY_LIMIT')) {
1823	$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);
1824
1825	if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
1826	$memory_limit = $wp_memory_limit;
1827	}
1828	}
1829
1830	return $memory_limit;
1831	}
1832
1833	/**
1834	* Returns max packet size for database.
1835	*
1836	* @return int\|string
1837	*/
1838	public function get_max_packet_size() {
1839	global $wpdb;
1840	static $mp = 0;
1841
1842	if ($mp > 0) return $mp;
1843
1844	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1845	// Default to 1MB
1846	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1847	// 32MB
1848	if ($mp < 33554432) {
1849	$save = $wpdb->show_errors(false);
1850	$req = @$wpdb->query("SET GLOBAL max_allowed_packet=33554432");
1851	$wpdb->show_errors($save);
1852
1853	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1854	// Default to 1MB
1855	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1856	}
1857
1858	return $mp;
1859	}
1860
1861	/**
1862	* Converts shorthand memory notation value to bytes.
1863	* From http://php.net/manual/en/function.ini-get.php
1864	*
1865	* @param string $val shorthand memory notation value.
1866	*/
1867	public function return_bytes($val) {
1868	$val = trim($val);
1869	$last = strtolower($val[strlen($val)-1]);
1870	$val = (int) $val;
1871	switch ($last) {
1872	case 'g':
1873	$val *= 1024;
1874	// no break
1875	case 'm':
1876	$val *= 1024;
1877	// no break
1878	case 'k':
1879	$val *= 1024;
1880	}
1881
1882	return $val;
1883	}
1884
1885	/**
1886	* Log fatal errors to defined log destinations.
1887	*/
1888	public function log_fatal_errors() {
1889	$last_error = error_get_last();
1890
1891	if (E_ERROR === $last_error['type']) {
1892	$this->get_logger()->critical($last_error['message']);
1893	}
1894	}
1895
1896	/**
1897	* Close browser connection and continue script work. - Taken from UpdraftPlus
1898	*
1899	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1900	* @return void
1901	*/
1902	public function close_browser_connection($txt = '') {
1903	// Close browser connection so that it can resume AJAX polling
1904	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1905	header('Connection: close');
1906	header('Content-Encoding: none');
1907	if (session_id()) session_write_close();
1908	echo "\r\n\r\n";
1909	echo $txt;
1910	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1911	$ob_level = ob_get_level();
1912	while ($ob_level > 0) {
1913	ob_end_flush();
1914	$ob_level--;
1915	}
1916	flush();
1917	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1918	}
1919
1920	/**
1921	* Get the current theme's style.css headers
1922	*
1923	* @return array\|WP_Error
1924	*/
1925	public function get_stylesheet_headers() {
1926	static $headers;
1927	if (isset($headers)) return $headers;
1928
1929	$style = get_template_directory_uri() . '/style.css';
1930
1931	/**
1932	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
1933	*
1934	* @param array $request_params Default parameters
1935	*/
1936	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
1937
1938	// trying to load style.css.
1939	$response = wp_remote_get($style, $request_params);
1940
1941	if (is_a($response, 'WP_Error')) return $response;
1942
1943	$headers = wp_remote_retrieve_headers($response);
1944
1945	if (is_a($headers, 'Requests_Utility_CaseInsensitiveDictionary')) {
1946	$headers = $headers->getAll();
1947	}
1948
1949	return $headers;
1950	}
1951
1952	/**
1953	* Try to change PHP script time limit.
1954	*/
1955	public function change_time_limit() {
1956	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1957
1958	// Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1959	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
1960	}
1961	}
1962
1963	/**
1964	* Plugin activation actions.
1965	*/
1966	function wpo_activation_actions() {
1967	// If plugin activated by not a Network Administrator then deactivate plugin and show message.
1968	if (is_multisite() && !is_network_admin()) {
1969	deactivate_plugins(plugin_basename(__FILE__));
1970	wp_die(__('Only Network Administrator can activate WP-Optimize plugin.', 'wp-optimize').
1971	' <a href="'.admin_url('plugins.php').'">'.__('go back', 'wp-optimize').'</a>');
1972	}
1973
1974	// On activation, check if last-optimized option exists. If not, add 'newly-activated' option.
1975	if (!WP_Optimize()->get_options()->get_option('last-optimized', false)) {
1976	WP_Optimize()->get_options()->update_option('newly-activated', true);
1977	}
1978
1979	WP_Optimize()->get_options()->set_default_options();
1980	}
1981
1982	/**
1983	* Plugin deactivation actions.
1984	*/
1985	function wpo_deactivation_actions() {
1986	WP_Optimize()->wpo_cron_deactivate();
1987	WP_Optimize()->get_page_cache()->disable();
1988	}
1989
1990	function wpo_cron_deactivate() {
1991	WP_Optimize()->log('running wpo_cron_deactivate()');
1992	wp_clear_scheduled_hook('wpo_cron_event2');
1993	}
1994
1995	/**
1996	* Plugin uninstall actions.
1997	*/
1998	function wpo_uninstall_actions() {
1999	WP_Optimize()->get_options()->delete_all_options();
2000	wp_clear_scheduled_hook('wpo_cron_plugin');
2001	}
2002
2003	function WP_Optimize() {
2004	return WP_Optimize::instance();
2005	}
2006
2007	endif;
2008
2009	$GLOBALS['wp_optimize'] = WP_Optimize();
2010