wp-optimize / wp-optimize.php

wp-optimize.php in WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance 3.0.9, 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: 3.0.9
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', '3.0.9');
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	$this->include_template('images/smush.php');
96	}
97
98	public static function instance() {
99	if (empty(self::$_instance)) {
100	self::$_instance = new self();
101	}
102	return self::$_instance;
103	}
104
105	public static function get_optimizer() {
106	if (empty(self::$_optimizer_instance)) {
107	if (!class_exists('WP_Optimizer')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-wp-optimizer.php');
108	self::$_optimizer_instance = new WP_Optimizer();
109	}
110	return self::$_optimizer_instance;
111	}
112
113	public static function get_options() {
114	if (empty(self::$_options_instance)) {
115	if (!class_exists('WP_Optimize_Options')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-wp-optimize-options.php');
116	self::$_options_instance = new WP_Optimize_Options();
117	}
118	return self::$_options_instance;
119	}
120
121	public static function get_notices() {
122	if (empty(self::$_notices_instance)) {
123	if (!class_exists('WP_Optimize_Notices')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/wp-optimize-notices.php');
124	self::$_notices_instance = new WP_Optimize_Notices();
125	}
126	return self::$_notices_instance;
127	}
128
129	/**
130	* Returns instance if WPO_Page_Cache class.
131	*
132	* @return WPO_Page_Cache
133	*/
134	public function get_page_cache() {
135	if (!class_exists('WPO_Page_Cache')) include_once(WPO_PLUGIN_MAIN_PATH.'/cache/class-wpo-page-cache.php');
136
137	return WPO_Page_Cache::instance();
138	}
139
140	/**
141	* Create instance of WP_Optimize_Browser_Cache.
142	*
143	* @return WP_Optimize_Browser_Cache
144	*/
145	public static function get_browser_cache() {
146	if (empty(self::$_browser_cache)) {
147	if (!class_exists('WP_Optimize_Browser_Cache')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-wp-optimize-browser-cache.php');
148	self::$_browser_cache = new WP_Optimize_Browser_Cache();
149	}
150	return self::$_browser_cache;
151	}
152
153	/**
154	* Returns WP_Optimize_Database_Information instance.
155	*
156	* @return WP_Optimize_Database_Information
157	*/
158	public function get_db_info() {
159	if (empty(self::$_db_info)) {
160	if (!class_exists('WP_Optimize_Database_Information')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/wp-optimize-database-information.php');
161	self::$_db_info = new WP_Optimize_Database_Information();
162	}
163	return self::$_db_info;
164	}
165
166	/**
167	* Returns instance of WP_Optimize_Gzip_Compression.
168	*
169	* @return WP_Optimize_Gzip_Compression
170	*/
171	static public function get_gzip_compression() {
172	if (empty(self::$_gzip_compression)) {
173	if (!class_exists('WP_Optimize_Gzip_Compression')) include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-wp-optimize-gzip-compression.php');
174	self::$_gzip_compression = new WP_Optimize_Gzip_Compression();
175	}
176	return self::$_gzip_compression;
177	}
178
179	/**
180	* Create instance of WP_Optimize_Htaccess.
181	*
182	* @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
183	* @return WP_Optimize_Htaccess
184	*/
185	public static function get_htaccess($htaccess_file = '') {
186	if (!class_exists('WP_Optimize_Cache')) {
187	include_once(WPO_PLUGIN_MAIN_PATH . '/includes/class-wp-optimize-htaccess.php');
188	}
189
190	return new WP_Optimize_Htaccess($htaccess_file);
191	}
192
193	/**
194	* Return instance of Updraft_Logger
195	*
196	* @return Updraft_Logger
197	*/
198	public static function get_logger() {
199	if (empty(self::$_logger_instance)) {
200	include_once(WPO_PLUGIN_MAIN_PATH.'/includes/class-updraft-logger.php');
201	self::$_logger_instance = new Updraft_Logger();
202	}
203	return self::$_logger_instance;
204	}
205
206	/**
207	* Enqueue scripts and styles on WP-Optimize pages.
208	*/
209	public function admin_enqueue_scripts() {
210	$current_screen = get_current_screen();
211	// load scripts and styles only on WP-Optimize pages.
212	if (!preg_match('/wp\-optimize/i', $current_screen->id)) return;
213
214	$enqueue_version = (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
215	$min_or_not = (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
216	$min_or_not_internal = (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-'. str_replace('.', '-', WPO_VERSION). '.min';
217
218	wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);
219
220	wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);
221	wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('smush-js'), $enqueue_version);
222	wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'smush-js'), $enqueue_version);
223	wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
224	// Using tablesorter to help with organising the DB size on Table Information
225	// https://github.com/Mottie/tablesorter
226	wp_enqueue_script('tablesorter-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter'.$min_or_not.'.js', array('jquery'), $enqueue_version);
227
228	wp_enqueue_script('tablesorter-widgets-js', WPO_PLUGIN_URL.'js/tablesorter/jquery.tablesorter.widgets'.$min_or_not.'.js', array('jquery'), $enqueue_version);
229
230	// wp_enqueue_style('tablesorter-css', WPO_PLUGIN_URL.'css/tablesorter/theme.default.min.css', array(), $enqueue_version);
231
232	$js_variables = $this->wpo_js_translations();
233	$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
234
235	wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
236
237	do_action('wpo_premium_scripts_styles', $min_or_not, $enqueue_version);
238	}
239
240	/**
241	* Load Task Manager
242	*/
243	public function get_task_manager() {
244	include_once(WPO_PLUGIN_MAIN_PATH.'/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');
245
246	Updraft_Tasks_Activation::check_updates();
247
248	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
249	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
250	include_once(WPO_PLUGIN_MAIN_PATH . '/vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
251
252	include_once(WPO_PLUGIN_MAIN_PATH . '/includes/class-updraft-smush-task.php');
253	include_once(WPO_PLUGIN_MAIN_PATH . '/includes/class-updraft-smush-manager.php');
254
255	return Updraft_Smush_Manager();
256	}
257
258	/**
259	* Indicate whether we have an associated instance of WP-Optimize Premium or not.
260	*
261	* @returns Boolean
262	*/
263	public static function is_premium() {
264	if (file_exists(WPO_PLUGIN_MAIN_PATH.'/premium.php') && function_exists('WP_Optimize_Premium')) {
265	$wp_optimize_premium = WP_Optimize_Premium();
266	if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
267	}
268	return false;
269	}
270
271	/**
272	* 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.
273	*
274	* @return bool
275	*/
276	public function is_apache_server() {
277	global $is_apache;
278	return $is_apache;
279	}
280
281	/**
282	* Check if Apache module or modules active.
283	*
284	* @param string\|array $module - single Apache module name or list of Apache module names.
285	*
286	* @return bool\|null - if null, the result was indeterminate
287	*/
288	public function is_apache_module_loaded($module) {
289	if (!$this->is_apache_server()) return false;
290
291	if (!function_exists('apache_get_modules')) return null;
292
293	$module_loaded = true;
294
295	if (is_array($module)) {
296	foreach ($module as $single_module) {
297	if (!in_array($single_module, apache_get_modules())) {
298	$module_loaded = false;
299	break;
300	}
301	}
302	} else {
303	$module_loaded = in_array($module, apache_get_modules());
304	}
305
306	return $module_loaded;
307	}
308
309	/**
310	* Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
311	*/
312	public function plugins_loaded() {
313
314	if (is_multisite()) {
315	add_action('network_admin_menu', array($this, 'admin_menu'));
316	}
317
318	// Run Premium loader if it exists
319	if (file_exists(WPO_PLUGIN_MAIN_PATH.'/premium.php') && !class_exists('WP_Optimize_Premium')) {
320	include_once(WPO_PLUGIN_MAIN_PATH.'/premium.php');
321	}
322
323	// load defaults
324	WP_Optimize()->get_options()->set_default_options();
325
326	// Initialize loggers.
327	$this->setup_loggers();
328
329	if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
330	if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
331	deactivate_plugins($free_plugin);
332
333	// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
334	if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
335	file_put_contents(trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php', '');
336	}
337
338	// Registers the notice letting the user know it cannot be active if premium is active.
339	add_action('admin_notices', array($this, 'show_admin_notice_premium'));
340	return;
341	}
342
343	// Loads the task manager
344	$this->get_task_manager();
345
346	// Loads the language file.
347	load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
348
349	// Load page cache.
350	$this->get_page_cache();
351	$this->init_page_cache();
352	}
353
354	/**
355	* Check whether one of free/Premium is active (whether it is this instance or not)
356	*
357	* @param String $which - 'free' or 'premium'
358	*
359	* @return String\|Boolean - plugin path (if installed) or false if not
360	*/
361	private function is_active($which = 'free') {
362	$active_plugins = $this->get_active_plugins();
363	foreach ($active_plugins as $file) {
364	if ('wp-optimize.php' == basename($file)) {
365	$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
366	if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
367	}
368	}
369	return false;
370	}
371
372	/**
373	* Gets an array of plugins active on either the current site, or site-wide
374	*
375	* @return Array - a list of plugin paths (relative to the plugin directory)
376	*/
377	private function get_active_plugins() {
378
379	// Gets all active plugins on the current site
380	$active_plugins = get_option('active_plugins');
381
382	if (is_multisite()) {
383	$network_active_plugins = get_site_option('active_sitewide_plugins');
384	if (!empty($network_active_plugins)) {
385	$network_active_plugins = array_keys($network_active_plugins);
386	$active_plugins = array_merge($active_plugins, $network_active_plugins);
387	}
388	}
389
390	return $active_plugins;
391	}
392
393	/**
394	* This function checks whether a specific plugin is installed, and returns information about it
395	*
396	* @param string $name Specify "Plugin Name" to return details about it.
397	* @return array Returns an array of details such as if installed, the name of the plugin and if it is active.
398	*/
399	public function is_installed($name) {
400
401	// Needed to have the 'get_plugins()' function
402	include_once(ABSPATH.'wp-admin/includes/plugin.php');
403
404	// Gets all plugins available
405	$get_plugins = get_plugins();
406
407	$active_plugins = $this->get_active_plugins();
408
409	$plugin_info['installed'] = false;
410	$plugin_info['active'] = false;
411
412	// Loops around each plugin available.
413	foreach ($get_plugins as $key => $value) {
414	// If the plugin name matches that of the specified name, it will gather details.
415	if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
416	$plugin_info['installed'] = true;
417	$plugin_info['name'] = $key;
418	$plugin_info['version'] = $value['Version'];
419	if (in_array($key, $active_plugins)) {
420	$plugin_info['active'] = true;
421	}
422	break;
423	}
424	return $plugin_info;
425	}
426
427	/**
428	* This is a notice to show users that premium is installed
429	*/
430	public function show_admin_notice_premium() {
431	echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
432	if (isset($_GET['activate'])) unset($_GET['activate']);
433	}
434
435	/**
436	* Show update to Premium notice for non-premium multisite.
437	*/
438	public function show_multisite_update_to_premium_notice() {
439	if (!is_multisite() \|\| self::is_premium()) return;
440
441	echo '<p><a href="'.$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>';
442	}
443
444	public function admin_init() {
445	$pagenow = $GLOBALS['pagenow'];
446
447	$this->register_template_directories();
448
449	if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
450	$options = $this->get_options();
451
452	$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);
453
454	if (file_exists(WPO_PLUGIN_MAIN_PATH . '/index.html')) {
455	$installed = filemtime(WPO_PLUGIN_MAIN_PATH . '/index.html');
456	$installed_for = (time() - $installed);
457	}
458
459	if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
460	add_action('all_admin_notices', array($this, 'show_admin_notice_upgradead'));
461	}
462	}
463
464	$this->install_or_update_notice = include_once WPO_PLUGIN_MAIN_PATH . 'includes/class-wp-optimize-install-or-update-notice.php';
465	}
466
467	public function show_admin_notice_upgradead() {
468	$this->include_template('notices/thanks-for-using-main-dash.php');
469	}
470
471	public function capability_required() {
472	return apply_filters('wp_optimize_capability_required', 'manage_options');
473	}
474
475	public function wp_optimize_ajax_handler() {
476	$nonce = empty($_POST['nonce']) ? '' : $_POST['nonce'];
477
478	if (!wp_verify_nonce($nonce, 'wp-optimize-ajax-nonce') \|\| empty($_POST['subaction'])) die('Security check');
479
480	$subaction = $_POST['subaction'];
481	$data = isset($_POST['data']) ? $_POST['data'] : null;
482
483	if (!current_user_can($this->capability_required())) die('Security check');
484
485	// Currently the settings are only available to network admins.
486	if (is_multisite() && !current_user_can('manage_network_options')) {
487	/**
488	* Filters the commands allowed to the subsite admins. Other commands are only available to network admin. Only used in a multisite context.
489	*/
490	$allowed_commands = apply_filters('wpo_multisite_allowed_commands', array('check_server_status', 'compress_single_image', 'restore_single_image'));
491	if (!in_array($subaction, $allowed_commands)) return array(
492	'result' => false,
493	'error_code' => 'update_failed',
494	'error_message' => __('Options can only be saved by network admin', 'wp-optimize')
495	);
496	}
497
498	$wp_optimize = $this;
499	$optimizer = $this->get_optimizer();
500	$options = $this->get_options();
501
502	$results = array();
503
504	// Some commands that are available via AJAX only.
505	if (in_array($subaction, array('dismiss_dash_notice_until', 'dismiss_season'))) {
506	$options->update_option($subaction, (time() + 366 * 86400));
507	} elseif (in_array($subaction, array('dismiss_page_notice_until', 'dismiss_notice'))) {
508	$options->update_option($subaction, (time() + 84 * 86400));
509	} else {
510	// Other commands, available for any remote method.
511	if (!class_exists('WP_Optimize_Commands')) include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-commands.php');
512	if (!class_exists('WP_Optimize_Cache_Commands')) include_once(WPO_PLUGIN_MAIN_PATH . 'cache/class-cache-commands.php');
513
514	$commands = new WP_Optimize_Commands();
515	$cache_commands = new WP_Optimize_Cache_Commands();
516
517	// check if called command not in main commands class and exist in cache commands class then change class.
518	if (!is_callable(array($commands, $subaction)) && is_callable(array($cache_commands, $subaction))) {
519	$commands = $cache_commands;
520	}
521
522	if (!is_callable(array($commands, $subaction))) {
523	error_log("WP-Optimize: ajax_handler: no such command (".$subaction.")");
524	die('No such command');
525	} else {
526	$results = call_user_func(array($commands, $subaction), $data);
527
528	// clean status box content, it broke json sometimes.
529	if (isset($results['status_box_contents'])) {
530	$results['status_box_contents'] = str_replace(array("\n", "\t"), '', $results['status_box_contents']);
531	}
532
533	if (is_wp_error($results)) {
534	$results = array(
535	'result' => false,
536	'error_code' => $results->get_error_code(),
537	'error_message' => $results->get_error_message(),
538	'error_data' => $results->get_error_data(),
539	);
540	}
541
542	// if nothing was returned for some reason, set as result null.
543	if (empty($results)) {
544	$results = array(
545	'result' => null
546	);
547	}
548	}
549	}
550
551	$result = json_encode($results);
552
553	// Requires PHP 5.3+
554	// @codingStandardsIgnoreLine
555	$json_last_error = function_exists('json_last_error') ? json_last_error() : false;
556
557	// if json_encode returned error then return error.
558	if ($json_last_error) {
559	$result = array(
560	'result' => false,
561	'error_code' => $json_last_error,
562	'error_message' => 'json_encode error : '.$json_last_error,
563	'error_data' => '',
564	);
565
566	$result = json_encode($result);
567	}
568
569	echo $result;
570
571	die;
572	}
573
574	/**
575	* Builds the Tabs that should be displayed
576	*
577	* @return array Returns all tabs specified
578	*/
579	public function get_tabs($page) {
580	// define tabs for pages.
581	$pages_tabs = array(
582	'WP-Optimize' => array('optimize' => __('Optimizations', 'wp-optimize'), 'tables' => __('Tables', 'wp-optimize')),
583	'wpo_images' => array(
584	'smush' => __('Compress images', 'wp-optimize'),
585	'unused' => __('Unused images and sizes', 'wp-optimize').'<span class="premium-only">Premium</span>',
586	'lazyload' => __('Lazy-load', 'wp-optimize').'<span class="premium-only">Premium</span>',
587	),
588	'wpo_cache' => array(
589	'cache' => __('Page cache', 'wp-optimize'),
590	'preload' => __('Preload', 'wp-optimize'),
591	'advanced' => __('Advanced settings', 'wp-optimize'),
592	'gzip' => __('Gzip compression', 'wp-optimize'),
593	'settings' => __('Static file headers', 'wp-optimize') // Adds a settings tab
594	),
595	'wpo_settings' => array(
596	'settings' => array(
597	'title' => __('Settings', 'wp-optimize'),
598	),
599	),
600	'wpo_support' => array('support' => __('Support / FAQs', 'wp-optimize')),
601	'wpo_mayalso' => array('may_also' => __('Premium / Plugin family', 'wp-optimize')),
602	);
603
604	$tabs = (array_key_exists($page, $pages_tabs)) ? $pages_tabs[$page] : array();
605
606	return apply_filters('wp_optimize_admin_page_'.$page.'_tabs', $tabs);
607	}
608
609	/**
610	* Main page structure.
611	*/
612	public function display_admin() {
613	$capability_required = $this->capability_required();
614
615	if (!current_user_can($capability_required) \|\| (!$this->can_run_optimizations() && !$this->can_manage_options())) {
616	echo "Permission denied.";
617	return;
618	}
619
620	$this->register_admin_content();
621
622	echo '<div id="wp-optimize-wrap">';
623
624	$this->include_template('admin-page-header.php', false);
625
626	do_action('wpo_admin_after_header');
627
628	echo '<div id="actions-results-area"></div>';
629
630	$pages = $this->get_submenu_items();
631
632	foreach ($pages as $page) {
633	if (isset($page['menu_slug'])) {
634	$this->display_admin_page($page['menu_slug']);
635	}
636	}
637
638	// closes main plugin wrapper div. #wp-optimize-wrap
639	echo '</div><!-- END #wp-optimize-wrap -->';
640
641	}
642
643	/**
644	* Prepare and display admin page with $page id.
645	*
646	* @param string $page wp-optimize page id i.e. dashboard, database, images, cache, ...
647	*/
648	public function display_admin_page($page) {
649
650	$active_page = !empty($_REQUEST['page']) ? $_REQUEST['page'] : '';
651
652	echo '<div class="wpo-page' . ($active_page == $page ? ' active' : '') . '" data-whichpage="'.$page.'">';
653
654	echo '<div class="wpo-main">';
655
656	// get defined tabs for $page.
657	$tabs = $this->get_tabs($page);
658
659	// if no tabs defined for $page then use $page as $active_tab for load template, doing related actions e t.c.
660	if (empty($tabs)) {
661	$active_tab = $page;
662	} else {
663	$tab_keys = array_keys($tabs);
664	$default_tab = apply_filters('wp_optimize_admin_'.$page.'_default_tab', $tab_keys[0]);
665	$active_tab = isset($_GET['tab']) ? substr($_GET['tab'], 12) : $default_tab;
666	if (!in_array($active_tab, array_keys($tabs))) $active_tab = $default_tab;
667	}
668
669	do_action('wp_optimize_admin_page_'.$page, $active_tab);
670
671	// if tabs defined then display
672	if (!empty($tabs)) {
673	$this->include_template('admin-page-header-tabs.php', false, array('page' => $page, 'active_tab' => $active_tab, 'tabs' => $tabs, 'wpo_is_premium' => self::is_premium()));
674	}
675
676	foreach ($tabs as $tab_id => $tab_description) {
677	// output wrap div for tab with id #wp-optimize-nav-tab-contents-'.$page.'-'.$tab_id
678	echo '<div class="wp-optimize-nav-tab-contents" id="wp-optimize-nav-tab-'.$page.'-'.$tab_id.'-contents" '.(($tab_id == $active_tab) ? '' : 'style="display:none;"').'>';
679
680	echo '<div class="postbox wpo-tab-postbox">';
681	// call action for generate tab content.
682
683	do_action('wp_optimize_admin_page_'.$page.'_'.$tab_id);
684
685	// closes postbox.
686	echo '</div><!-- END .postbox -->';
687	// closes tab wrapper.
688	echo '</div><!-- END .wp-optimize-nav-tab-contents -->';
689	}
690
691	echo '</div><!-- END .wpo-main -->';
692
693	do_action('wp_optimize_admin_after_page_'.$page, $active_tab);
694
695	echo '</div><!-- END .wpo-page -->';
696
697	}
698
699	/**
700	* Define required actions for admin pages.
701	*/
702	public function register_admin_content() {
703	/**
704	* SETTINGS
705	*/
706	add_action('wp_optimize_admin_page_wpo_settings_settings', array($this, 'output_dashboard_settings_tab'), 20);
707
708	/**
709	* Premium / other plugins
710	*/
711	add_action('wp_optimize_admin_page_wpo_mayalso_may_also', array($this, 'output_dashboard_other_plugins_tab'), 20);
712
713	/**
714	* DATABASE
715	*/
716	add_action('wp_optimize_admin_page_WP-Optimize_optimize', array($this, 'output_database_optimize_tab'), 20);
717
718	add_action('wp_optimize_admin_page_WP-Optimize_tables', array($this, 'output_database_tables_tab'), 20);
719
720	/**
721	* CACHE
722	*/
723
724	add_action('wp_optimize_admin_page_wpo_cache_cache', array($this, 'output_page_cache_tab'), 20);
725	add_action('wp_optimize_admin_page_wpo_cache_preload', array($this, 'output_page_cache_preload_tab'), 20);
726	add_action('wp_optimize_admin_page_wpo_cache_advanced', array($this, 'output_page_cache_advanced_tab'), 20);
727	add_action('wp_optimize_admin_page_wpo_cache_gzip', array($this, 'output_cache_gzip_tab'), 20);
728	add_action('wp_optimize_admin_page_wpo_cache_settings', array($this, 'output_cache_settings_tab'), 20);
729
730	/**
731	* SUPPORT
732	*/
733	add_action('wp_optimize_admin_page_wpo_support_support', array($this, 'output_dashboard_support_tab'), 20);
734	// Display Support page.
735
736	if (!self::is_premium()) {
737	/**
738	* Add action for display Images > Unused images and sizes tab.
739	*/
740	add_action('wp_optimize_admin_page_wpo_images_unused', array($this, 'admin_page_wpo_images_unused'));
741
742	/**
743	* Add action for display Dashboard > Lazyload tab.
744	*/
745	add_action('wp_optimize_admin_page_wpo_images_lazyload', array($this, 'admin_page_wpo_images_lazyload'));
746	}
747	}
748
749	/**
750	* Dashboard settings
751	*/
752	public function output_dashboard_settings_tab() {
753	$options = $this->get_options();
754
755	if ('POST' == $_SERVER['REQUEST_METHOD']) {
756	// Nonce check.
757	check_admin_referer('wpo_settings');
758
759	$output = $options->save_settings($_POST);
760
761	if (isset($_POST['wp-optimize-settings'])) {
762	// save settings request sent.
763	$output = $options->save_settings($_POST);
764	}
765
766	$this->wpo_render_output_messages($output);
767	}
768
769	if ($this->can_manage_options()) {
770	$this->include_template('settings/settings.php');
771	} else {
772	$this->prevent_manage_options_info();
773	}
774	}
775
776	/**
777	* Dashboard support tab
778	*/
779	public function output_dashboard_support_tab() {
780	WP_Optimize()->include_template('settings/support-and-faqs.php');
781	}
782
783	/**
784	* Dashboard Other plugins / premium tab
785	*/
786	public function output_dashboard_other_plugins_tab() {
787	$this->include_template('settings/may-also-like.php');
788	}
789
790	/**
791	* Gzip tab
792	*/
793	public function output_page_cache_tab() {
794	$wpo_cache = $this->get_page_cache();
795	$wpo_cache_options = $wpo_cache->config->get();
796	$display = $wpo_cache_options['enable_page_caching'] ? "style='display:block'" : "style='display:none'";
797
798	WP_Optimize()->include_template('cache/page-cache.php', false, array(
799	'wpo_cache' => $wpo_cache,
800	'active_cache_plugins' => WP_Optimize_Detect_Cache_Plugins::instance()->get_active_cache_plugins(),
801	'wpo_cache_options' => $wpo_cache_options,
802	'cache_size' => $this->get_page_cache()->get_cache_size(),
803	'display' => $display
804	));
805	}
806
807	/**
808	* Preload tab
809	*/
810	public function output_page_cache_preload_tab() {
811	$wpo_cache = $this->get_page_cache();
812	$wpo_cache_options = $wpo_cache->config->get();
813	$wpo_cache_preloader = WP_Optimize_Page_Cache_Preloader::instance();
814	$is_running = $wpo_cache_preloader->is_running();
815	$status = $wpo_cache_preloader->get_status_info();
816
817	WP_Optimize()->include_template('cache/page-cache-preload.php', false, array(
818	'wpo_cache_options' => $wpo_cache_options,
819	'is_running' => $is_running,
820	'status_message' => isset($status['message']) ? $status['message'] : '',
821	'schedule_options' => array(
822	'wpo_use_cache_lifespan' => __('Same as cache lifespan', 'wp-optimize'),
823	'wpo_daily' => __('Daily', 'wp-optimize'),
824	'wpo_weekly' => __('Weekly', 'wp-optimize'),
825	'wpo_fortnightly' => __('Fortnightly', 'wp-optimize'),
826	'wpo_monthly' => __('Monthly (approx. - every 30 days)', 'wp-optimize')
827	)
828	));
829	}
830
831	/**
832	* Advanced tab
833	*/
834	public function output_page_cache_advanced_tab() {
835	$wpo_cache = $this->get_page_cache();
836	$wpo_cache_options = $wpo_cache->config->get();
837
838	$cache_exception_urls = is_array($wpo_cache_options['cache_exception_urls']) ? join("\n", $wpo_cache_options['cache_exception_urls']) : '';
839	$cache_exception_cookies = is_array($wpo_cache_options['cache_exception_cookies']) ? join("\n", $wpo_cache_options['cache_exception_cookies']) : '';
840	$cache_exception_browser_agents = is_array($wpo_cache_options['cache_exception_browser_agents']) ? join("\n", $wpo_cache_options['cache_exception_browser_agents']) : '';
841
842	WP_Optimize()->include_template('cache/page-cache-advanced.php', false, array(
843	'wpo_cache' => $this->get_page_cache(),
844	'wpo_cache_options' => $wpo_cache_options,
845	'cache_exception_urls' => $cache_exception_urls,
846	'cache_exception_cookies' => $cache_exception_cookies,
847	'cache_exception_browser_agents' => $cache_exception_browser_agents,
848	));
849	}
850
851	/**
852	* Gzip tab
853	*/
854	public function output_cache_gzip_tab() {
855	$wpo_gzip_compression = $this->get_gzip_compression();
856	$wpo_gzip_compression_enabled = $wpo_gzip_compression->is_gzip_compression_enabled(true);
857
858	WP_Optimize()->include_template('cache/gzip-compression.php', false, array(
859	'wpo_gzip_compression_enabled' => $wpo_gzip_compression_enabled,
860	'wpo_gzip_compression_settings_added' => $wpo_gzip_compression->is_gzip_compression_section_exists(),
861	'info_link' => 'https://getwpo.com/gzip-compression-explained/',
862	'faq_link' => 'https://getwpo.com/gzip-faq-link/',
863	'class_name' => (!is_wp_error($wpo_gzip_compression_enabled) && $wpo_gzip_compression_enabled ? 'wpo-enabled' : 'wpo-disabled')
864	));
865	}
866
867	/**
868	* Cache tab
869	*/
870	public function output_cache_settings_tab() {
871
872	$wpo_browser_cache = $this->get_browser_cache();
873	$wpo_browser_cache_enabled = $wpo_browser_cache->is_enabled();
874
875	WP_Optimize()->include_template('cache/browser-cache.php', false, array(
876	'wpo_browser_cache_enabled' => $wpo_browser_cache_enabled,
877	'wpo_browser_cache_settings_added' => $wpo_browser_cache->is_browser_cache_section_exists(),
878	'class_name' => (true === $wpo_browser_cache_enabled ? 'wpo-enabled' : 'wpo-disabled'),
879	'wpo_browser_cache_expire_days' => $this->get_options()->get_option('browser_cache_expire_days', '28'),
880	'wpo_browser_cache_expire_hours' => $this->get_options()->get_option('browser_cache_expire_hours', '0'),
881	'info_link' => 'https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching',
882	'faq_link' => 'https://www.digitalocean.com/community/tutorials/how-to-implement-browser-caching-with-nginx-s-header-module-on-ubuntu-16-04',
883	));
884	}
885
886	/**
887	* Outputs the DB optimize Tab
888	*/
889	public function output_database_optimize_tab() {
890	$optimizer = $this->get_optimizer();
891	$options = $this->get_options();
892
893	// check if nonce passed.
894	$nonce_passed = (!empty($_REQUEST['_wpnonce']) && wp_verify_nonce($_REQUEST['_wpnonce'], 'wpo_optimization')) ? true : false;
895
896	// save options.
897	if ($nonce_passed && isset($_POST['wp-optimize'])) $options->save_sent_manual_run_optimization_options($_POST, true);
898
899	$optimize_db = ($nonce_passed && isset($_POST["optimize-db"])) ? true : false;
900
901	$optimization_results = (($nonce_passed) ? $optimizer->do_optimizations($_POST) : false);
902
903	// display optimizations table or restricted access message.
904	if ($this->can_run_optimizations()) {
905	$this->include_template('database/optimize-table.php', false, array('optimize_db' => $optimize_db, 'optimization_results' => $optimization_results ));
906	} else {
907	$this->prevent_run_optimizations_message();
908	}
909	}
910
911	/**
912	* Outputs the DB Tables Tab
913	*/
914	public function output_database_tables_tab() {
915	// check if nonce passed.
916	$nonce_passed = (!empty($_REQUEST['_wpnonce']) && wp_verify_nonce($_REQUEST['_wpnonce'], 'wpo_optimization')) ? true : false;
917
918	$optimize_db = ($nonce_passed && isset($_POST["optimize-db"])) ? true : false;
919
920	if ($this->can_run_optimizations()) {
921	$this->include_template('database/tables.php', false, array('optimize_db' => $optimize_db));
922	} else {
923	$this->prevent_run_optimizations_message();
924	}
925	}
926
927	/**
928	* Runs upon the WP action admin_page_wpo_images_unused
929	*/
930	public function admin_page_wpo_images_unused() {
931	WP_Optimize()->include_template('images/unused.php');
932	}
933
934	/**
935	* Runs upon the WP action wp_optimize_admin_page_wpo_images_lazyload
936	*/
937	public function admin_page_wpo_images_lazyload() {
938	WP_Optimize()->include_template('images/lazyload.php');
939	}
940
941	/**
942	* Returns array of translations used in javascript code.
943	*
944	* @return array
945	*/
946	public function wpo_js_translations() {
947	return apply_filters('wpo_js_translations', array(
948	'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
949	'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
950	'optimization_complete' => __('Optimization complete', 'wp-optimize'),
951	'run_optimizations' => __('Run optimizations', 'wp-optimize'),
952	'cancel' => __('Cancel', 'wp-optimize'),
953	'enable' => __('Enable', 'wp-optimize'),
954	'disable' => __('Disable', 'wp-optimize'),
955	'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
956	'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
957	'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
958	'table_was_not_repaired' => __('%s was not repaired. For more details, please check the logs (configured in your logging destinations settings).', 'wp-optimize'),
959	'are_you_sure_you_want_to_remove_this_table' => __('Are you sure you want to remove this table?', 'wp-optimize'),
960	'table_was_not_deleted' => __('%s was not deleted. For more details, please check your logs configured in logging destinations settings.', 'wp-optimize'),
961	'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
962	'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
963	'update' => __('Update', 'wp-optimize'),
964	'run_now' => __('Run now', 'wp-optimize'),
965	'starting_preload' => __('Started preload...', 'wp-optimize'),
966	'loading_urls' => __('Loading URLs...', 'wp-optimize'),
967	'current_cache_size' => __('Current cache size:', 'wp-optimize'),
968	'number_of_files' => __('Number of files:', 'wp-optimize'),
969	'spinner_src' => esc_attr(admin_url('images/spinner-2x.gif')),
970	'sites' => $this->get_sites(),
971	));
972	}
973
974	public function wpo_admin_bar() {
975	$wp_admin_bar = $GLOBALS['wp_admin_bar'];
976
977	if (defined('WPOPTIMIZE_ADMINBAR_DISABLE') && WPOPTIMIZE_ADMINBAR_DISABLE) return;
978
979	// Show menu item in top bar only for super admins.
980	if (is_multisite() & !is_super_admin(get_current_user_id())) return;
981
982	// Add a link called at the top admin bar.
983	$args = array(
984	'id' => 'wp-optimize-node',
985	'title' => apply_filters('wpoptimize_admin_node_title', 'WP-Optimize')
986	);
987	$wp_admin_bar->add_node($args);
988
989	$pages = $this->get_submenu_items();
990
991	foreach ($pages as $page_id => $page) {
992
993	if (!isset($page['create_submenu']) \|\| !$page['create_submenu']) {
994	if (isset($page['icon']) && 'separator' == $page['icon']) {
995	$args = array(
996	'id' => 'wpo-separator-'.$page_id,
997	'parent' => 'wp-optimize-node',
998	'meta' => array(
999	'class' => 'separator',
1000	),
1001	);
1002	$wp_admin_bar->add_node($args);
1003	}
1004	continue;
1005	}
1006
1007	// 'menu_slug' => 'WP-Optimize',
1008
1009	$menu_page_url = menu_page_url($page['menu_slug'], false);
1010
1011	if (is_multisite()) {
1012	$menu_page_url = network_admin_url('admin.php?page='.$page['menu_slug']);
1013	}
1014
1015	$args = array(
1016	'id' => 'wpoptimize_admin_node_'.$page_id,
1017	'title' => $page['menu_title'],
1018	'parent' => 'wp-optimize-node',
1019	'href' => $menu_page_url,
1020	);
1021	$wp_admin_bar->add_node($args);
1022	}
1023
1024	}
1025
1026	/**
1027	* Add settings link on plugin page
1028	*
1029	* @param string $links Passing through the URL to be used within the HREF.
1030	* @return string Returns the Links.
1031	*/
1032	public function plugin_settings_link($links) {
1033
1034	$admin_page_url = $this->get_options()->admin_page_url();
1035	$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');
1036
1037	if (false == self::is_premium()) {
1038	$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
1039	array_unshift($links, $premium_link);
1040	}
1041
1042	$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
1043	array_unshift($links, $settings_link);
1044
1045	$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
1046	array_unshift($links, $optimize_link);
1047	return $links;
1048	}
1049
1050	/**
1051	* Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
1052	*
1053	* @param string $content String for output to column
1054	* @param object $table_info Object with table info.
1055	*
1056	* @return string
1057	*/
1058	public function tables_list_additional_column_data($content, $table_info) {
1059	if ($table_info->is_needing_repair) {
1060	$content .= '<div class="wpo_button_wrap">'
1061	. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
1062	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
1063	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1064	. '</div>';
1065	}
1066
1067	// table belongs to plugin.
1068	if ($table_info->can_be_removed) {
1069	$content .= '<div>'
1070	. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
1071	. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">'
1072	. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
1073	. '</div>';
1074	}
1075
1076	return $content;
1077	}
1078
1079	/**
1080	* Initialize WP-Optimize page cache.
1081	*/
1082	public function init_page_cache() {
1083	if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
1084	$this->get_page_cache()->enable();
1085	}
1086	}
1087
1088	/**
1089	* Schedules cron event based on selected schedule type
1090	*
1091	* @return void
1092	*/
1093	public function cron_activate() {
1094	$gmt_offset = (int) (3600 * get_option('gmt_offset'));
1095
1096	$options = $this->get_options();
1097
1098	if ($options->get_option('schedule') === false) {
1099	$options->set_default_options();
1100	} else {
1101	if ('true' == $options->get_option('schedule')) {
1102	if (!wp_next_scheduled('wpo_cron_event2')) {
1103	$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');
1104
1105	// Backward compatibility
1106	if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';
1107
1108	$this_time = (86400 * 7);
1109
1110	switch ($schedule_type) {
1111	case "wpo_daily":
1112	$this_time = 86400;
1113	break;
1114
1115	case "wpo_weekly":
1116	$this_time = (86400 * 7);
1117	break;
1118
1119	case "wpo_fortnightly":
1120	$this_time = (86400 * 14);
1121	break;
1122
1123	case "wpo_monthly":
1124	$this_time = (86400 * 30);
1125	break;
1126	}
1127
1128	add_action('wpo_cron_event2', array($this, 'cron_action'));
1129	wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
1130	WP_Optimize()->log('running wp_schedule_event()');
1131	}
1132	}
1133	}
1134	}
1135
1136	/**
1137	* Clears all cron events
1138	*
1139	* @return void
1140	*/
1141	public function wpo_cron_deactivate() {
1142	wp_clear_scheduled_hook('wpo_cron_event2');
1143	}
1144
1145	/**
1146	* Scheduler public functions to update schedulers
1147	*
1148	* @param array $schedules An array of schedules being passed.
1149	* @return array An array of schedules being returned.
1150	*/
1151	public function cron_schedules($schedules) {
1152	$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
1153	$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
1154	$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
1155	$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
1156	return $schedules;
1157	}
1158
1159	/**
1160	* Returns count of overdue cron jobs.
1161	*
1162	* @return integer
1163	*/
1164	public function howmany_overdue_crons() {
1165	$how_many_overdue = 0;
1166	if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
1167	$crons = _get_cron_array();
1168	if (is_array($crons)) {
1169	$timenow = time();
1170	foreach ($crons as $jt => $job) {
1171	if ($jt < $timenow) {
1172	$how_many_overdue++;
1173	}
1174	}
1175	}
1176	}
1177	return $how_many_overdue;
1178	}
1179
1180	/**
1181	* Returns warning about overdue crons.
1182	*
1183	* @param int $howmany count of overdue crons
1184	* @return string
1185	*/
1186	public function show_admin_warning_overdue_crons($howmany) {
1187	$ret = '<div class="updated below-h2"><p>';
1188	$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>';
1189	$ret .= '</p></div>';
1190	return $ret;
1191	}
1192
1193	public function admin_menu() {
1194
1195	$capability_required = $this->capability_required();
1196
1197	if (!current_user_can($capability_required) \|\| (!$this->can_run_optimizations() && !$this->can_manage_options())) return;
1198
1199	$icon_svg = 'data:image/svg+xml;base64,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';
1200
1201	// Removes the admin menu items on the left WP bar.
1202	if (!is_multisite() \|\| (is_multisite() && is_network_admin())) {
1203	add_menu_page("WP-Optimize", "WP-Optimize", $capability_required, "WP-Optimize", array($this, "display_admin"), $icon_svg);
1204
1205	$sub_menu_items = $this->get_submenu_items();
1206
1207	foreach ($sub_menu_items as $menu_item) {
1208	if ($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']);
1209	}
1210	}
1211
1212	$options = $this->get_options();
1213
1214	if ($options->get_option('enable-admin-menu', 'false') == 'true') {
1215	add_action('wp_before_admin_bar_render', array($this, 'wpo_admin_bar'));
1216	}
1217
1218	}
1219
1220	/**
1221	* Get the submenu items
1222	*
1223	* @return array
1224	*/
1225	public function get_submenu_items() {
1226	$sub_menu_items = array(
1227	array(
1228	'page_title' => __('Database', 'wp-optimize'),
1229	'menu_title' => __('Database', 'wp-optimize'),
1230	'menu_slug' => 'WP-Optimize',
1231	'function' => array($this, 'display_admin'),
1232	'icon' => 'cloud',
1233	'create_submenu' => true,
1234	'order' => 20,
1235	),
1236	array(
1237	'page_title' => __('Images', 'wp-optimize'),
1238	'menu_title' => __('Images', 'wp-optimize'),
1239	'menu_slug' => 'wpo_images',
1240	'function' => array($this, 'display_admin'),
1241	'icon' => 'images-alt2',
1242	'create_submenu' => true,
1243	'order' => 30,
1244	),
1245	array(
1246	'page_title' => __('Cache', 'wp-optimize'),
1247	'menu_title' => __('Cache', 'wp-optimize'),
1248	'menu_slug' => 'wpo_cache',
1249	'function' => array($this, 'display_admin'),
1250	'icon' => 'archive',
1251	'create_submenu' => true,
1252	'order' => 40,
1253	),
1254	array(
1255	'create_submenu' => false,
1256	'order' => 45,
1257	'icon' => 'separator',
1258	),
1259	array(
1260	'page_title' => __('Settings', 'wp-optimize'),
1261	'menu_title' => __('Settings', 'wp-optimize'),
1262	'menu_slug' => 'wpo_settings',
1263	'function' => array($this, 'display_admin'),
1264	'icon' => 'admin-settings',
1265	'create_submenu' => true,
1266	'order' => 50,
1267	),
1268	array(
1269	'page_title' => __('Support & FAQs', 'wp-optimize'),
1270	'menu_title' => __('Help', 'wp-optimize'),
1271	'menu_slug' => 'wpo_support',
1272	'function' => array($this, 'display_admin'),
1273	'icon' => 'sos',
1274	'create_submenu' => true,
1275	'order' => 60,
1276	),
1277	array(
1278	'page_title' => __('Premium Upgrade', 'wp-optimize'),
1279	'menu_title' => __('Premium Upgrade', 'wp-optimize'),
1280	'menu_slug' => 'wpo_mayalso',
1281	'function' => array($this, 'display_admin'),
1282	'icon' => 'admin-plugins',
1283	'create_submenu' => true,
1284	'order' => 70,
1285	),
1286	);
1287
1288	$sub_menu_items = apply_filters('wp_optimize_sub_menu_items', $sub_menu_items);
1289
1290	usort($sub_menu_items, array($this, 'order_sort'));
1291
1292	return $sub_menu_items;
1293	}
1294
1295	public function order_sort($a, $b) {
1296	if ($a['order'] == $b['order']) return 0;
1297	return ($a['order'] > $b['order']) ? 1 : -1;
1298	}
1299
1300	private function wp_normalize_path($path) {
1301	// Wp_normalize_path is not present before WP 3.9.
1302	if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
1303	// Taken from WP 4.6.
1304	$path = str_replace('\\', '/', $path);
1305	$path = preg_replace('\|(?<=.)/+\|', '/', $path);
1306	if (':' === substr($path, 1, 1)) {
1307	$path = ucfirst($path);
1308	}
1309	return $path;
1310	}
1311
1312	public function get_templates_dir() {
1313	return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'/templates'));
1314	}
1315
1316	public function get_templates_url() {
1317	return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'/templates');
1318	}
1319
1320	/**
1321	* Return or output view content
1322	*
1323	* @param String $path - path to template, usually relative to templates/ within the WP-O directory
1324	* @param Boolean $return_instead_of_echo - what to do with the results
1325	* @param Array $extract_these - key/value pairs for substitution into the scope of the template
1326	*
1327	* @return String\|Void
1328	*/
1329	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
1330	if ($return_instead_of_echo) ob_start();
1331
1332	if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
1333	$prefix = $matches[1];
1334	$suffix = $matches[2];
1335	if (isset($this->template_directories[$prefix])) {
1336	$template_file = $this->template_directories[$prefix].'/'.$suffix;
1337	}
1338	}
1339
1340	if (!isset($template_file)) {
1341	$template_file = WPO_PLUGIN_MAIN_PATH.'/templates/'.$path;
1342	}
1343
1344	$template_file = apply_filters('wp_optimize_template', $template_file, $path);
1345
1346	do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1347
1348	if (!file_exists($template_file)) {
1349	error_log("WP Optimize: template not found: ".$template_file);
1350	echo __('Error:', 'wp-optimize').' '.__('template not found', 'wp-optimize')." (".$path.")";
1351	} else {
1352	extract($extract_these);
1353	$wpdb = $GLOBALS['wpdb'];
1354	$wp_optimize = $this;
1355	$optimizer = $this->get_optimizer();
1356	$options = $this->get_options();
1357	$wp_optimize_notices = $this->get_notices();
1358	include $template_file;
1359	}
1360
1361	do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);
1362
1363	if ($return_instead_of_echo) return ob_get_clean();
1364	}
1365
1366	/**
1367	* Build a list of template directories (stored in self::$template_directories)
1368	*/
1369	private function register_template_directories() {
1370
1371	$template_directories = array();
1372
1373	$templates_dir = $this->get_templates_dir();
1374
1375	if ($dh = opendir($templates_dir)) {
1376	while (($file = readdir($dh)) !== false) {
1377	if ('.' == $file \|\| '..' == $file) continue;
1378	if (is_dir($templates_dir.'/'.$file)) {
1379	$template_directories[$file] = $templates_dir.'/'.$file;
1380	}
1381	}
1382	closedir($dh);
1383	}
1384
1385	// Optimal hook for most extensions to hook into.
1386	$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);
1387
1388	}
1389
1390	/**
1391	* Not currently used; needs looking at.
1392	* N.B. The description does not match the actual function
1393	*
1394	* @param integer $date Date of when the optimization was executed.
1395	*/
1396	public function send_email($date) {
1397	ob_start();
1398	// This need to work on - currently not using the parameter values.
1399	$my_time = current_time("timestamp", 0);
1400	$my_date = gmdate(get_option('date_format') . ' ' . get_option('time_format'), $my_time);
1401	$sendto = (!$options->get_option('email-address') ? get_bloginfo('admin_email') : $options->get_option('email-address'));
1402	$subject = get_bloginfo('name').": ".__("Automatic Operation Completed", "wp-optimize")." ".$my_date;
1403
1404	$msg = __("Scheduled optimization was executed at", "wp-optimize")." ".$my_date."\r\n"."\r\n";
1405	$msg .= __("You can safely delete this email.", "wp-optimize")."\r\n";
1406	$msg .= "\r\n";
1407	$msg .= __("Regards,", "wp-optimize")."\r\n";
1408	$msg .= __("WP-Optimize Plugin", "wp-optimize");
1409	ob_end_clean();
1410	}
1411
1412	/**
1413	* Message to debug
1414	*
1415	* @param string $message Message to insert into the log.
1416	* @param array $context array with variables used in $message like in template,
1417	* for ex.
1418	* $message = 'Hello {message}';
1419	* $context = ['message' => 'world']
1420	* 'Hello world' string will be saved in log.
1421	*/
1422	public function log($message, $context = array()) {
1423	$this->get_logger()->debug($message, $context);
1424	}
1425
1426	/**
1427	* Format Bytes Into KB/MB
1428	*
1429	* @param mixed $bytes Number of bytes to be converted.
1430	* @return integer return the correct format size.
1431	*/
1432	public function format_size($bytes) {
1433	if ($bytes > 1073741824) {
1434	return number_format_i18n(($bytes / 1073741824), 2) . ' '.__('GB', 'wp-optimize');
1435	} elseif ($bytes > 1048576) {
1436	return number_format_i18n(($bytes / 1048576), 1) . ' '.__('MB', 'wp-optimize');
1437	} elseif ($bytes > 1024) {
1438	return number_format_i18n(($bytes / 1024), 1) . ' '.__('KB', 'wp-optimize');
1439	} else {
1440	return number_format_i18n($bytes, 0) . ' '.__('bytes', 'wp-optimize');
1441	}
1442	}
1443
1444	/**
1445	* Executed this function on cron event.
1446	*
1447	* @return void
1448	*/
1449	public function cron_action() {
1450
1451	$optimizer = $this->get_optimizer();
1452	$options = $this->get_options();
1453
1454	$this->log('WPO: Starting cron_action()');
1455
1456	if ('true' == $options->get_option('schedule')) {
1457	$this_options = $options->get_option('auto');
1458
1459	$optimizations = $optimizer->get_optimizations();
1460
1461	// Currently the output of the optimizations is not saved/used/logged.
1462	$results = $optimizer->do_optimizations($this_options, 'auto');
1463	}
1464
1465	}
1466
1467	/**
1468	* Schedule cron tasks used by plugin.
1469	*
1470	* @return void
1471	*/
1472	public function schedule_plugin_cron_tasks() {
1473	if (!wp_next_scheduled('wpo_plugin_cron_tasks')) {
1474	wp_schedule_event(current_time("timestamp", 0), 'twicedaily', 'wpo_plugin_cron_tasks');
1475	}
1476
1477	add_action('wpo_plugin_cron_tasks', array($this, 'do_plugin_cron_tasks'));
1478	}
1479
1480	/**
1481	* Do plugin background tasks.
1482	*
1483	* @return void
1484	*/
1485	public function do_plugin_cron_tasks() {
1486	// add tasks here.
1487	}
1488
1489	/**
1490	* This will customize a URL with a correct Affiliate link
1491	* This function can be update to suit any URL as longs as the URL is passed
1492	*
1493	* @param String $url - URL to be check to see if it an updraftplus match.
1494	* @param String $text - Text to be entered within the href a tags.
1495	* @param String $html - Any specific HTML to be added.
1496	* @param String $class - Specify a class for the href (including the attribute label)
1497	* @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed.
1498	*
1499	* @return String\|void
1500	*/
1501	public function wp_optimize_url($url, $text, $html = '', $class = '', $return_instead_of_echo = false) {
1502	// Check if the URL is UpdraftPlus.
1503	$url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images.
1504	if ('' != $html) {
1505	$result = '<a '.$class.' href="'.esc_attr($url).'">'.$html.'</a>';
1506	} else {
1507	$result = '<a '.$class.' href="'.esc_attr($url).'">'.htmlspecialchars($text).'</a>';
1508	}
1509	if ($return_instead_of_echo) return $result;
1510	echo $result;
1511	}
1512
1513	/**
1514	* Get an URL with an eventual affiliate ID
1515	*
1516	* @param string $url
1517	* @return string
1518	*/
1519	public function maybe_add_affiliate_params($url) {
1520	// Check if the URL is UpdraftPlus.
1521	if (false !== strpos($url, '//updraftplus.com')) {
1522	// Set URL with Affiliate ID.
1523	$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);
1524
1525	// Apply filters.
1526	$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
1527	}
1528	return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
1529	}
1530
1531	/**
1532	* Setup WPO logger(s)
1533	*/
1534	public function setup_loggers() {
1535
1536	$logger = $this->get_logger();
1537	$loggers = $this->wpo_loggers();
1538
1539	if (!empty($loggers)) {
1540	foreach ($loggers as $_logger) {
1541	$logger->add_logger($_logger);
1542	}
1543	}
1544
1545	add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
1546	}
1547
1548	/**
1549	* Run logger actions after all optimizations done
1550	*/
1551	public function after_optimizations_logger_action() {
1552	$loggers = $this->get_logger()->get_loggers();
1553	if (!empty($loggers)) {
1554	foreach ($loggers as $logger) {
1555	if (is_a($logger, 'Updraft_Email_Logger')) {
1556	$logger->flush_log();
1557	}
1558	}
1559	}
1560	}
1561
1562	/**
1563	* Returns list of WPO loggers instances
1564	* Apply filter wp_optimize_loggers
1565	*
1566	* @return array
1567	*/
1568	public function wpo_loggers() {
1569
1570	$loggers = array();
1571	$loggers_classes_by_id = array();
1572	$options_keys = array();
1573
1574	$loggers_classes = $this->get_loggers_classes();
1575
1576	foreach ($loggers_classes as $logger_class => $source) {
1577	$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
1578	}
1579
1580	$options = $this->get_options();
1581
1582	$saved_loggers = $options->get_option('logging');
1583	$logger_additional_options = $options->get_option('logging-additional');
1584
1585	// create loggers classes instances.
1586	if (!empty($saved_loggers)) {
1587	// check for previous version options format.
1588	$keys = array_keys($saved_loggers);
1589
1590	// if options stored in old format then reformat it.
1591	if (false == is_numeric($keys[0])) {
1592	$_saved_loggers = array();
1593	foreach ($saved_loggers as $logger_id => $enabled) {
1594	if ($enabled) {
1595	$_saved_loggers[] = $logger_id;
1596	}
1597	}
1598
1599	// fill email with admin.
1600	if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
1601	$logger_additional_options['updraft_email_logger'] = array(
1602	get_option('admin_email')
1603	);
1604	}
1605
1606	$saved_loggers = $_saved_loggers;
1607	}
1608
1609	foreach ($saved_loggers as $i => $logger_id) {
1610
1611	if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;
1612
1613	$logger_class = $loggers_classes_by_id[$logger_id];
1614
1615	$logger = new $logger_class();
1616
1617	$logger_options = $logger->get_options_list();
1618
1619	if (!empty($logger_options)) {
1620	foreach (array_keys($logger_options) as $option_name) {
1621	if (array_key_exists($option_name, $options_keys)) {
1622	$options_keys[$option_name]++;
1623	} else {
1624	$options_keys[$option_name] = 0;
1625	}
1626
1627	$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';
1628
1629	// if options in old format then get correct value.
1630	if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
1631	$option_value = array_shift($logger_additional_options[$logger_id]);
1632	}
1633
1634	$logger->set_option($option_name, $option_value);
1635	}
1636	}
1637
1638	// check if logger is active.
1639	$active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;
1640
1641	if ($active) {
1642	$logger->enable();
1643	} else {
1644	$logger->disable();
1645	}
1646
1647	$loggers[] = $logger;
1648	}
1649	}
1650
1651	$loggers = apply_filters('wp_optimize_loggers', $loggers);
1652
1653	return $loggers;
1654	}
1655
1656	/**
1657	* Returns associative array with logger class name in a key and path to class file in a value.
1658	*
1659	* @return array
1660	*/
1661	public function get_loggers_classes() {
1662	$loggers_classes = array(
1663	'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
1664	'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
1665	'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
1666	);
1667
1668	$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);
1669
1670	if (!empty($loggers_classes)) {
1671	foreach ($loggers_classes as $logger_class => $logger_file) {
1672	if (!class_exists($logger_class)) {
1673	if (is_file($logger_file)) {
1674	include_once($logger_file);
1675	}
1676	}
1677	}
1678	}
1679
1680	return $loggers_classes;
1681	}
1682
1683	/**
1684	* Returns information about all loggers classes.
1685	*
1686	* @return array
1687	*/
1688	public function get_loggers_classes_info() {
1689	$loggers_classes = $this->get_loggers_classes();
1690
1691	$loggers_classes_info = array();
1692
1693	if (!empty($loggers_classes)) {
1694	foreach (array_keys($loggers_classes) as $logger_class_name) {
1695
1696	if (!class_exists($logger_class_name)) continue;
1697
1698	$logger_id = strtolower($logger_class_name);
1699	$logger_class = new $logger_class_name();
1700
1701	$loggers_classes_info[$logger_id] = array(
1702	'description' => $logger_class->get_description(),
1703	'available' => $logger_class->is_available(),
1704	'allow_multiple' => $logger_class->is_allow_multiple(),
1705	'options' => $logger_class->get_options_list()
1706	);
1707	}
1708	}
1709
1710	return $loggers_classes_info;
1711	}
1712
1713	/**
1714	* Returns true if optimization works in multisite mode
1715	*
1716	* @return boolean
1717	*/
1718	public function is_multisite_mode() {
1719	return (is_multisite() && WP_Optimize()->is_premium());
1720	}
1721
1722	/**
1723	* Returns true if current user can run optimizations.
1724	*
1725	* @return bool
1726	*/
1727	public function can_run_optimizations() {
1728	// we don't check permissions for cron jobs.
1729	if (defined('DOING_CRON') && DOING_CRON) return true;
1730
1731	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
1732	return true;
1733	}
1734
1735	/**
1736	* Returns true if current user can manage plugin options.
1737	*
1738	* @return bool
1739	*/
1740	public function can_manage_options() {
1741	if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
1742	return true;
1743	}
1744
1745	/**
1746	* Output information message for users who have no permissions to run optimizations.
1747	*/
1748	public function prevent_run_optimizations_message() {
1749	$this->include_template('info-message.php', false, array('message' => __('You have no permissions to run optimizations.', 'wp-optimize')));
1750	}
1751
1752	/**
1753	* Output information message for users who have no permissions to manage settings.
1754	*/
1755	public function prevent_manage_options_info() {
1756	$this->include_template('info-message.php', false, array('message' => __('You have no permissions to manage WP-Optimize settings.', 'wp-optimize')));
1757	}
1758
1759	/**
1760	* Returns list of all sites in multisite
1761	*
1762	* @return array
1763	*/
1764	public function get_sites() {
1765	$sites = array();
1766	// check if function get_sites exists (since 4.6.0) else use wp_get_sites.
1767	if (function_exists('get_sites')) {
1768	$sites = get_sites(array('network_id' => null, 'number' => 999999));
1769	} elseif (function_exists('wp_get_sites')) {
1770	// @codingStandardsIgnoreLine
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	// @codingStandardsIgnoreLine
1851	$req = @$wpdb->query("SET GLOBAL max_allowed_packet=33554432");
1852	$wpdb->show_errors($save);
1853
1854	$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
1855	// Default to 1MB
1856	$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
1857	}
1858
1859	return $mp;
1860	}
1861
1862	/**
1863	* Converts shorthand memory notation value to bytes.
1864	* From http://php.net/manual/en/function.ini-get.php
1865	*
1866	* @param string $val shorthand memory notation value.
1867	*/
1868	public function return_bytes($val) {
1869	$val = trim($val);
1870	$last = strtolower($val[strlen($val)-1]);
1871	$val = (int) $val;
1872	switch ($last) {
1873	case 'g':
1874	$val *= 1024;
1875	// no break
1876	case 'm':
1877	$val *= 1024;
1878	// no break
1879	case 'k':
1880	$val *= 1024;
1881	}
1882
1883	return $val;
1884	}
1885
1886	/**
1887	* Log fatal errors to defined log destinations.
1888	*/
1889	public function log_fatal_errors() {
1890	$last_error = error_get_last();
1891
1892	if (E_ERROR === $last_error['type']) {
1893	$this->get_logger()->critical($last_error['message']);
1894	}
1895	}
1896
1897	/**
1898	* Close browser connection and continue script work. - Taken from UpdraftPlus
1899	*
1900	* @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
1901	* @return void
1902	*/
1903	public function close_browser_connection($txt = '') {
1904	// Close browser connection so that it can resume AJAX polling
1905	header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
1906	header('Connection: close');
1907	header('Content-Encoding: none');
1908	if (session_id()) session_write_close();
1909	echo "\r\n\r\n";
1910	echo $txt;
1911	// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
1912	$ob_level = ob_get_level();
1913	while ($ob_level > 0) {
1914	ob_end_flush();
1915	$ob_level--;
1916	}
1917	flush();
1918	if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
1919	}
1920
1921	/**
1922	* Get the current theme's style.css headers
1923	*
1924	* @return array\|WP_Error
1925	*/
1926	public function get_stylesheet_headers() {
1927	static $headers;
1928	if (isset($headers)) return $headers;
1929
1930	$style = get_template_directory_uri() . '/style.css';
1931
1932	/**
1933	* Filters wp_remote_get parameters, when checking if browser cache is enabled.
1934	*
1935	* @param array $request_params Default parameters
1936	*/
1937	$request_params = apply_filters('wpoptimize_get_stylesheet_headers_args', array('timeout' => 10));
1938
1939	// trying to load style.css.
1940	$response = wp_remote_get($style, $request_params);
1941
1942	if (is_a($response, 'WP_Error')) return $response;
1943
1944	$headers = wp_remote_retrieve_headers($response);
1945
1946	if (is_a($headers, 'Requests_Utility_CaseInsensitiveDictionary')) {
1947	$headers = $headers->getAll();
1948	}
1949
1950	return $headers;
1951	}
1952
1953	/**
1954	* Try to change PHP script time limit.
1955	*/
1956	public function change_time_limit() {
1957	$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;
1958
1959	// Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
1960	@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged
1961	}
1962	}
1963
1964	/**
1965	* Plugin activation actions.
1966	*/
1967	function wpo_activation_actions() {
1968	// If plugin activated by not a Network Administrator then deactivate plugin and show message.
1969	if (is_multisite() && !is_network_admin()) {
1970	deactivate_plugins(plugin_basename(__FILE__));
1971	wp_die(__('Only Network Administrator can activate WP-Optimize plugin.', 'wp-optimize').
1972	' <a href="'.admin_url('plugins.php').'">'.__('go back', 'wp-optimize').'</a>');
1973	}
1974
1975	// On activation, check if last-optimized option exists. If not, add 'newly-activated' option.
1976	if (!WP_Optimize()->get_options()->get_option('last-optimized', false)) {
1977	WP_Optimize()->get_options()->update_option('newly-activated', true);
1978	}
1979
1980	WP_Optimize()->get_options()->set_default_options();
1981	}
1982
1983	/**
1984	* Plugin deactivation actions.
1985	*/
1986	function wpo_deactivation_actions() {
1987	WP_Optimize()->wpo_cron_deactivate();
1988	WP_Optimize()->get_page_cache()->disable();
1989	}
1990
1991	function wpo_cron_deactivate() {
1992	WP_Optimize()->log('running wpo_cron_deactivate()');
1993	wp_clear_scheduled_hook('wpo_cron_event2');
1994	}
1995
1996	/**
1997	* Plugin uninstall actions.
1998	*/
1999	function wpo_uninstall_actions() {
2000	WP_Optimize()->get_options()->delete_all_options();
2001	wp_clear_scheduled_hook('wpo_cron_plugin');
2002	}
2003
2004	function WP_Optimize() {
2005	return WP_Optimize::instance();
2006	}
2007
2008	endif;
2009
2010	$GLOBALS['wp_optimize'] = WP_Optimize();
2011