Tutor.php — Tutor LMS – eLearning and online course solution 3.6.4

tutor / classes / Tutor.php

tutor / classes Last commit date

Addons.php 1 year ago Admin.php 1 year ago Ajax.php 1 year ago Announcements.php 1 year ago Assets.php 1 year ago Backend_Page_Trait.php 1 year ago BaseController.php 1 year ago Course.php 1 year ago Course_Embed.php 3 years ago Course_Filter.php 1 year ago Course_List.php 1 year ago Course_Settings_Tabs.php 1 year ago Course_Widget.php 1 year ago Custom_Validation.php 3 years ago Dashboard.php 1 year ago Earnings.php 1 year ago FormHandler.php 2 years ago Frontend.php 1 year ago Gutenberg.php 1 year ago Input.php 1 year ago Instructor.php 1 year ago Instructors_List.php 1 year ago Lesson.php 1 year ago Options_V2.php 1 year ago Permalink.php 2 years ago Post_types.php 1 year ago Private_Course_Access.php 1 year ago Q_And_A.php 1 year ago Question_Answers_List.php 3 years ago Quiz.php 1 year ago QuizBuilder.php 1 year ago Quiz_Attempts_List.php 1 year ago RestAPI.php 2 years ago Reviews.php 3 years ago Rewrite_Rules.php 2 years ago Shortcode.php 1 year ago Singleton.php 1 year ago Student.php 1 year ago Students_List.php 1 year ago Taxonomies.php 1 year ago Template.php 1 year ago Theme_Compatibility.php 3 years ago Tools.php 1 year ago Tools_V2.php 1 year ago Tutor.php 1 year ago TutorEDD.php 1 year ago Tutor_Base.php 2 years ago Tutor_Setup.php 1 year ago Upgrader.php 1 year ago User.php 1 year ago Utils.php 11 months ago Video_Stream.php 3 years ago WhatsNew.php 2 years ago Withdraw.php 1 year ago Withdraw_Requests_List.php 1 year ago WooCommerce.php 1 year ago

Tutor.php

1405 lines

1	<?php
2	/**
3	* Initialize all the dependency classes
4	*
5	* @package Tutor
6	* @author Themeum <support@themeum.com>
7	* @link https://themeum.com
8	* @since 1.0.0
9	*/
10
11	namespace TUTOR;
12
13	use Tutor\Ecommerce\Ecommerce;
14	use Tutor\Models\CourseModel;
15
16	if ( ! defined( 'ABSPATH' ) ) {
17	exit;
18	}
19
20	/**
21	* Tutor final class
22	*
23	* @since 1.0.0
24	*/
25	final class Tutor {
26	/**
27	* Tutor version
28	*
29	* @since 1.0.0
30	*
31	* @var string
32	*/
33	public $version = TUTOR_VERSION;
34
35	/**
36	* Plugin dir path
37	*
38	* @since 1.0.0
39	*
40	* @var string
41	*/
42	public $path;
43
44	/**
45	* Plugin dir path
46	*
47	* @since 1.0.0
48	*
49	* @var string
50	*/
51	public $url;
52
53	/**
54	* Plugin dir name
55	*
56	* @since 1.0.0
57	*
58	* @var string
59	*/
60	public $basename;
61
62	/**
63	* The single instance of the class.
64	*
65	* @since 1.2.0
66	*
67	* @var object
68	*/
69	protected static $_instance = null;
70
71
72	/**
73	* Utils class object
74	*
75	* @since 1.1.0
76	*
77	* @var object
78	*/
79	public $utils;
80
81	/**
82	* Admin class object
83	*
84	* @since 1.1.0
85	*
86	* @var object
87	*/
88	public $admin;
89
90	/**
91	* Ajax class object
92	*
93	* @since 1.1.0
94	*
95	* @var object
96	*/
97	public $ajax;
98
99	/**
100	* Options class object
101	*
102	* @since 1.1.0
103	*
104	* @var object
105	*/
106	public $options;
107
108	/**
109	* Short code class object
110	*
111	* @since 1.1.0
112	*
113	* @var object
114	*/
115	public $shortcode;
116
117	/**
118	* Addons class object
119	*
120	* @since 1.1.0
121	*
122	* @var object
123	*/
124	private $addons;
125
126	/**
127	* PostType class object
128	*
129	* @since 1.1.0
130	*
131	* @var object
132	*/
133	private $post_types;
134
135	/**
136	* Taxonomies class object
137	*
138	* @since 1.1.0
139	*
140	* @var object
141	*/
142	private $taxonomies;
143
144	/**
145	* Assets class object
146	*
147	* @since 1.1.0
148	*
149	* @var object
150	*/
151	private $assets;
152
153	/**
154	* Course class object
155	*
156	* @since 1.1.0
157	*
158	* @var object
159	*/
160	private $course;
161
162	/**
163	* Lesson class object
164	*
165	* @since 1.1.0
166	*
167	* @var object
168	*/
169	private $lesson;
170
171	/**
172	* Rewrite_Rules class object
173	*
174	* @since 1.1.0
175	*
176	* @var object
177	*/
178	private $rewrite_rules;
179
180	/**
181	* Template class object
182	*
183	* @since 1.1.0
184	*
185	* @var object
186	*/
187	private $template;
188
189	/**
190	* Instructor class object
191	*
192	* @since 1.1.0
193	*
194	* @var object
195	*/
196	private $instructor;
197
198	/**
199	* Student class object
200	*
201	* @since 1.1.0
202	*
203	* @var object
204	*/
205	private $student;
206
207	/**
208	* Q_And_A class object
209	*
210	* @since 1.1.0
211	*
212	* @var object
213	*/
214	private $q_and_a;
215
216	/**
217	* Quiz class object
218	*
219	* @since 1.1.0
220	*
221	* @var object
222	*/
223	private $quiz;
224
225	/**
226	* Tools class object
227	*
228	* @since 1.1.0
229	*
230	* @var object
231	*/
232	private $tools;
233
234	/**
235	* User class object
236	*
237	* @since 1.1.0
238	*
239	* @var object
240	*/
241	private $user;
242
243	/**
244	* Theme_Compatibility class object
245	*
246	* @since 1.1.0
247	*
248	* @var object
249	*/
250	private $theme_compatibility;
251
252	/**
253	* Gutenberg class object
254	*
255	* @since 1.1.0
256	*
257	* @var object
258	*/
259	private $gutenberg;
260
261	/**
262	* Course_Settings_Tabs class object
263	*
264	* @since 1.1.0
265	*
266	* @var object
267	*/
268	private $course_settings_tabs;
269
270	/**
271	* Withdraw class object
272	*
273	* @since 1.1.0
274	*
275	* @var object
276	*/
277	private $withdraw;
278
279	/**
280	* Course_Widget class object
281	*
282	* @since 1.1.0
283	*
284	* @var object
285	*/
286	private $course_widget;
287
288	/**
289	* Upgrader class object
290	*
291	* @since 1.1.0
292	*
293	* @var object
294	*/
295	private $upgrader;
296
297	/**
298	* Dashboard class object
299	*
300	* @since 1.1.0
301	*
302	* @var object
303	*/
304	private $dashboard;
305
306	/**
307	* FormHandler class object
308	*
309	* @since 1.1.0
310	*
311	* @var object
312	*/
313	private $form_handler;
314
315	/**
316	* Frontend class object
317	*
318	* @since 1.1.0
319	*
320	* @var object
321	*/
322	private $frontend;
323
324	/**
325	* Email property
326	*
327	* @since 1.1.0
328	*
329	* @var object
330	*/
331	private $email;
332
333	/**
334	* WooCommerce integration class object
335	*
336	* @since 1.1.0
337	*
338	* @var object
339	*/
340	private $woocommerce;
341
342	/**
343	* Tutor_EDD class object
344	*
345	* @since 1.1.0
346	*
347	* @var object
348	*/
349	private $edd;
350
351	/**
352	* Announcement
353	*
354	* @since 2.0.0
355	*
356	* @var $announcements
357	*/
358	private $announcements;
359
360	/**
361	* Reviews class object
362	*
363	* @since 1.1.0
364	*
365	* @var object
366	*/
367	private $reviews;
368
369	/**
370	* Withdraw_List class object
371	*
372	* @since 1.1.0
373	*
374	* @var object
375	*/
376	private $withdraw_list;
377
378	/**
379	* Student_List class object
380	*
381	* @since 1.1.0
382	*
383	* @var object
384	*/
385	private $student_list;
386
387	/**
388	* Instructor_List class object
389	*
390	* @since 1.1.0
391	*
392	* @var object
393	*/
394	private $instructor_list;
395
396	/**
397	* Course List
398	*
399	* @var Course_List
400	*
401	* @since 2.0.0
402	*/
403	public $course_list;
404
405	//phpcs:disable
406	public $q_and_a_list;
407	public $q_attempt;
408	public $rest_api;
409	public $setup;
410	public $private_course_access;
411	public $course_filter;
412	//phpcs:enable
413
414	/**
415	* Course Embed
416	*
417	* @var $course_embed
418	*
419	* @since 2.1.0
420	*/
421	private $course_embed;
422
423	/**
424	* Rest Authentication
425	*
426	* @var $rest_auth
427	*
428	* @since 2.1.0
429	*/
430	private $rest_auth;
431
432	/**
433	* Permalink
434	*
435	* @var Permalink
436	*/
437	private $permalink;
438
439	/**
440	* Run the TUTOR
441	*
442	* @since 1.2.0
443	*
444	* @return null\|Tutor
445	*/
446	public static function instance() {
447	if ( is_null( self::$_instance ) ) {
448	self::$_instance = new self();
449	}
450	return self::$_instance;
451	}
452
453	/**
454	* Initialize props & other dependencies
455	*
456	* @since 1.0.0
457	*/
458	public function __construct() {
459
460	$this->path = plugin_dir_path( TUTOR_FILE );
461	$this->url = plugin_dir_url( TUTOR_FILE );
462	$this->basename = plugin_basename( TUTOR_FILE );
463
464	/**
465	* Adding Tutor Database table to $wpdb;
466	*
467	* @since 1.4.2
468	*/
469	global $wpdb;
470	$wpdb->tutor_earnings = $wpdb->prefix . 'tutor_earnings';
471	$wpdb->tutor_gradebooks = $wpdb->prefix . 'tutor_gradebooks';
472	$wpdb->tutor_gradebooks_results = $wpdb->prefix . 'tutor_gradebooks_results';
473	$wpdb->tutor_quiz_attempts = $wpdb->prefix . 'tutor_quiz_attempts';
474	$wpdb->tutor_quiz_attempt_answers = $wpdb->prefix . 'tutor_quiz_attempt_answers';
475	$wpdb->tutor_quiz_questions = $wpdb->prefix . 'tutor_quiz_questions';
476	$wpdb->tutor_quiz_question_answers = $wpdb->prefix . 'tutor_quiz_question_answers';
477	$wpdb->tutor_withdraws = $wpdb->prefix . 'tutor_withdraws';
478	$wpdb->tutor_email_queue = $wpdb->prefix . 'tutor_email_queue';
479
480	/**
481	* Changing default wp doing ajax return based on tutor ajax action
482	*/
483	add_filter( 'wp_doing_ajax', array( $this, 'wp_doing_ajax' ) );
484
485	/**
486	* Include Files
487	*/
488	$this->includes();
489
490	do_action( 'tutor_before_load' );
491
492	$this->addons = new Addons();
493	$this->post_types = new Post_types();
494	$this->taxonomies = new Taxonomies();
495	$this->assets = new Assets();
496	$this->admin = new Admin();
497	$this->ajax = new Ajax();
498	$this->options = new Options_V2();
499	$this->shortcode = new Shortcode();
500	$this->course = new Course();
501	$this->lesson = new Lesson();
502	$this->rewrite_rules = new Rewrite_Rules();
503	$this->template = new Template();
504	$this->instructor = new Instructor();
505	$this->student = new Student();
506	$this->q_and_a = new Q_And_A();
507	$this->q_and_a_list = new Question_Answers_List();
508	$this->q_attempt = new Quiz_Attempts_List();
509	$this->quiz = new Quiz();
510	$this->tools = new Tools();
511	$this->user = new User();
512	$this->theme_compatibility = new Theme_Compatibility();
513	$this->gutenberg = new Gutenberg();
514	$this->course_settings_tabs = new Course_Settings_Tabs();
515	$this->withdraw = new Withdraw();
516	$this->upgrader = new Upgrader();
517	$this->dashboard = new Dashboard();
518	$this->form_handler = new FormHandler();
519	$this->frontend = new Frontend();
520	$this->rest_api = new RestAPI();
521	$this->setup = new Tutor_Setup();
522	$this->private_course_access = new Private_Course_Access();
523	$this->course_filter = new Course_Filter();
524	$this->permalink = new Permalink();
525
526	// Integrations.
527	$this->woocommerce = new WooCommerce();
528	$this->edd = new TutorEDD();
529
530	/**
531	* Init obj
532	*
533	* @since 2.0.0
534	*/
535	$this->announcements = new Announcements();
536	$this->course_list = new Course_List();
537	$this->reviews = new Reviews();
538	$this->withdraw_list = new Withdraw_Requests_List();
539	$this->student_list = new Students_List();
540	$this->instructor_list = new Instructors_List();
541	$this->course_embed = new Course_Embed();
542	$this->rest_auth = new RestAuth();
543
544	/**
545	* New Course Builder.
546	*
547	* @since 3.0.0
548	*/
549	new QuizBuilder();
550
551	/**
552	* Tutor native e-commerce
553	*
554	* @since 3.0.0
555	*/
556	new Ecommerce();
557
558	/**
559	* Run Method
560	*
561	* @since v.1.2.0
562	*/
563	$this->run();
564
565	do_action( 'tutor_loaded' );
566
567	add_action( 'init', array( $this, 'init_action' ) );
568
569	/**
570	* Check activated plugin
571	*
572	* @since 1.5.7
573	*/
574
575	add_action( 'activated_plugin', array( $this, 'activated_tutor' ), 10, 2 );
576
577	/**
578	* Redirect to setup page
579	*
580	* @since 2.8.0
581	*/
582	add_action( 'admin_init', array( $this, 'redirect_to_setup_page' ) );
583	}
584
585	/**
586	* Check activated plugin
587	*
588	* @since 1.5.7
589	*
590	* @param mixed $plugin plugin.
591	* @param mixed $network_wide network wide.
592	*
593	* @return void
594	*/
595	public function activated_tutor( $plugin, $network_wide = null ) {
596	if ( tutor()->basename === $plugin ) {
597	$this->redirect_to_setup_page();
598	}
599	}
600
601	/**
602	* Redirect to setup page
603	*
604	* @since 2.8.0
605	*
606	* @return void
607	*/
608	public function redirect_to_setup_page() {
609	if ( ( ! get_option( 'tutor_wizard' ) ) && version_compare( TUTOR_VERSION, '1.5.6', '>' ) ) {
610	if ( ! wp_doing_ajax() ) {
611	update_option( 'tutor_wizard', 'active' );
612	wp_safe_redirect( admin_url( 'admin.php?page=tutor-setup' ) );
613	exit;
614	}
615	}
616	}
617
618	/**
619	* Include utility functions
620	*
621	* @return void
622	*/
623	public function includes() {
624	$tutor_path = plugin_dir_path( TUTOR_FILE );
625
626	include $tutor_path . 'includes/tutor-general-functions.php';
627	include $tutor_path . 'includes/tutor-template-functions.php';
628	include $tutor_path . 'includes/tutor-template-hook.php';
629	include $tutor_path . 'includes/translate-text.php';
630	include $tutor_path . 'includes/country.php';
631	include $tutor_path . 'includes/ecommerce-functions.php';
632
633	if ( ! function_exists( 'is_plugin_active' ) ) {
634	require_once ABSPATH . 'wp-admin/includes/plugin.php';
635	}
636
637	$is_droip_active = \is_plugin_active( 'droip/droip.php' );
638	$tutor_droip_path = $tutor_path . 'includes/droip/droip.php';
639	if ( $is_droip_active && file_exists( $tutor_droip_path ) ) {
640	include $tutor_droip_path;
641	}
642	}
643
644	/**
645	* Providing hooks
646	*
647	* @return void
648	*/
649	public function run() {
650	do_action( 'tutor_before_run' );
651	do_action( 'tutor_after_run' );
652	}
653
654	/**
655	* Tutor Action Via do_action
656	*
657	* @since 1.2.14
658	*/
659	public function init_action() {
660	$tutor_action = Input::sanitize_request_data( 'tutor_action' );
661	if ( '' !== $tutor_action ) {
662	do_action( 'tutor_action_' . $tutor_action );
663	}
664	}
665
666	/**
667	* Do some task during plugin activation
668	*/
669	public static function tutor_activate() {
670	$version = get_option( 'tutor_version' );
671	if ( ! function_exists( 'tutor_time' ) ) {
672	include tutor()->path . 'includes/tutor-general-functions.php';
673	}
674
675	// Create Database.
676	self::create_database();
677
678	// Save Option.
679	if ( ! $version ) {
680
681	$options = self::default_options();
682	update_option( 'tutor_option', $options );
683
684	// Rewrite Flush.
685	Permalink::set_permalink_flag();
686	self::manage_tutor_roles_and_permissions();
687
688	// Save initial Page.
689	self::save_data();
690	update_option( 'tutor_version', TUTOR_VERSION );
691	}
692
693	// Set Schedule.
694	if ( ! wp_next_scheduled( 'tutor_once_in_day_run_schedule' ) ) {
695	wp_schedule_event( tutor_time(), 'twicedaily', 'tutor_once_in_day_run_schedule' );
696	}
697
698	/**
699	* Backward Compatibility for version < 1.2.0
700	*/
701	if ( version_compare( get_option( 'tutor_version' ), '1.2.0', '<' ) ) {
702	/**
703	* Creating New Database
704	*/
705	self::create_withdraw_database();
706	// Update the tutor version.
707	update_option( 'tutor_version', '1.2.0' );
708	// Rewrite Flush.
709	Permalink::set_permalink_flag();
710	}
711
712	/**
713	* Backward Compatibility to < 1.3.1 for make course plural
714	*/
715	if ( version_compare( get_option( 'tutor_version' ), '1.3.1', '<' ) ) {
716	global $wpdb;
717
718	if ( ! get_option( 'is_course_post_type_updated' ) ) {
719	$wpdb->update( $wpdb->posts, array( 'post_type' => tutor()->course_post_type ), array( 'post_type' => 'course' ) );
720	update_option( 'is_course_post_type_updated', true );
721	update_option( 'tutor_version', '1.3.1' );
722	Permalink::set_permalink_flag();
723	}
724	}
725
726	/**
727	* Save First activation Time
728	*/
729	$first_activation_date = get_option( 'tutor_first_activation_time' );
730	if ( ! $first_activation_date ) {
731	update_option( 'tutor_first_activation_time', tutor_time() );
732	}
733	}
734
735	/**
736	* Run task on deactivation
737	*
738	* @since 1.0.0
739	*
740	* @return void
741	*/
742	public static function tutor_deactivation() {
743	wp_clear_scheduled_hook( 'tutor_once_in_day_run_schedule' );
744	}
745
746	/**
747	* Create database
748	*
749	* @return void
750	*/
751	public static function create_database() {
752	global $wpdb;
753
754	$charset_collate = $wpdb->get_charset_collate();
755
756	/**
757	* Table SQL
758	*
759	* {$wpdb->prefix}tutor_quiz_attempts
760	* {$wpdb->prefix}tutor_quiz_attempt_answers
761	* {$wpdb->prefix}tutor_quiz_questions
762	* {$wpdb->prefix}tutor_quiz_question_answers
763	* {$wpdb->prefix}tutor_earnings
764	* {$wpdb->prefix}tutor_withdraws
765	*
766	* @since 1.0.0
767	*/
768	$quiz_attempts_sql = "CREATE TABLE {$wpdb->prefix}tutor_quiz_attempts (
769	attempt_id bigint(20) NOT NULL AUTO_INCREMENT,
770	course_id bigint(20) DEFAULT NULL,
771	quiz_id bigint(20) DEFAULT NULL,
772	user_id bigint(20) DEFAULT NULL,
773	total_questions int(11) DEFAULT NULL,
774	total_answered_questions int(11) DEFAULT NULL,
775	total_marks decimal(9,2) DEFAULT NULL,
776	earned_marks decimal(9,2) DEFAULT NULL,
777	attempt_info text,
778	attempt_status varchar(50) DEFAULT NULL,
779	attempt_ip varchar(250) DEFAULT NULL,
780	attempt_started_at datetime DEFAULT NULL,
781	attempt_ended_at datetime DEFAULT NULL,
782	is_manually_reviewed int(1) DEFAULT NULL,
783	manually_reviewed_at datetime DEFAULT NULL,
784	PRIMARY KEY (attempt_id)
785	) $charset_collate;";
786
787	$quiz_attempt_answers = "CREATE TABLE {$wpdb->prefix}tutor_quiz_attempt_answers (
788	attempt_answer_id bigint(20) NOT NULL AUTO_INCREMENT,
789	user_id bigint(20) DEFAULT NULL,
790	quiz_id bigint(20) DEFAULT NULL,
791	question_id bigint(20) DEFAULT NULL,
792	quiz_attempt_id bigint(20) DEFAULT NULL,
793	given_answer longtext,
794	question_mark decimal(8,2) DEFAULT NULL,
795	achieved_mark decimal(8,2) DEFAULT NULL,
796	minus_mark decimal(8,2) DEFAULT NULL,
797	is_correct tinyint(4) DEFAULT NULL,
798	PRIMARY KEY (attempt_answer_id)
799	) $charset_collate;";
800
801	$tutor_quiz_questions = "CREATE TABLE {$wpdb->prefix}tutor_quiz_questions (
802	question_id bigint(20) NOT NULL AUTO_INCREMENT,
803	quiz_id bigint(20) DEFAULT NULL,
804	question_title text,
805	question_description longtext,
806	answer_explanation longtext DEFAULT '',
807	question_type varchar(50) DEFAULT NULL,
808	question_mark decimal(9,2) DEFAULT NULL,
809	question_settings longtext,
810	question_order int(11) DEFAULT NULL,
811	PRIMARY KEY (question_id)
812	) $charset_collate;";
813
814	$tutor_quiz_question_answers = "CREATE TABLE {$wpdb->prefix}tutor_quiz_question_answers (
815	answer_id bigint(20) NOT NULL AUTO_INCREMENT,
816	belongs_question_id bigint(20) DEFAULT NULL,
817	belongs_question_type varchar(250) DEFAULT NULL,
818	answer_title text,
819	is_correct tinyint(4) DEFAULT NULL,
820	image_id bigint(20) DEFAULT NULL,
821	answer_two_gap_match text,
822	answer_view_format varchar(250) DEFAULT NULL,
823	answer_settings text,
824	answer_order int(11) DEFAULT '0',
825	PRIMARY KEY (answer_id)
826	) $charset_collate;";
827
828	$earning_table = "CREATE TABLE IF NOT EXISTS {$wpdb->prefix}tutor_earnings (
829	earning_id bigint(20) NOT NULL AUTO_INCREMENT,
830	user_id bigint(20) DEFAULT NULL,
831	course_id bigint(20) DEFAULT NULL,
832	order_id bigint(20) DEFAULT NULL,
833	order_status varchar(50) DEFAULT NULL,
834	course_price_total decimal(16,2) DEFAULT NULL,
835	course_price_grand_total decimal(16,2) DEFAULT NULL,
836	instructor_amount decimal(16,2) DEFAULT NULL,
837	instructor_rate decimal(16,2) DEFAULT NULL,
838	admin_amount decimal(16,2) DEFAULT NULL,
839	admin_rate decimal(16,2) DEFAULT NULL,
840	commission_type varchar(20) DEFAULT NULL,
841	deduct_fees_amount decimal(16,2) DEFAULT NULL,
842	deduct_fees_name varchar(250) DEFAULT NULL,
843	deduct_fees_type varchar(20) DEFAULT NULL,
844	process_by varchar(20) DEFAULT NULL,
845	created_at datetime DEFAULT NULL,
846	PRIMARY KEY (earning_id)
847	) $charset_collate;";
848
849	$withdraw_table = "CREATE TABLE IF NOT EXISTS {$wpdb->prefix}tutor_withdraws (
850	withdraw_id bigint(20) NOT NULL AUTO_INCREMENT,
851	user_id bigint(20) DEFAULT NULL,
852	amount decimal(16,2) DEFAULT NULL,
853	method_data text DEFAULT NULL,
854	status varchar(50) DEFAULT NULL,
855	updated_at datetime DEFAULT NULL,
856	created_at datetime DEFAULT NULL,
857	PRIMARY KEY (withdraw_id)
858	) $charset_collate;";
859
860	$orders_table = "CREATE TABLE {$wpdb->prefix}tutor_orders (
861	id BIGINT(20) UNSIGNED AUTO_INCREMENT,
862	parent_id BIGINT(20) UNSIGNED DEFAULT 0, -- for subscription order, store subscription record id
863	transaction_id VARCHAR(255) COMMENT 'Transaction id from payment gateway',
864	user_id BIGINT(20) UNSIGNED NOT NULL,
865	order_type VARCHAR(50) NOT NULL, -- single_order, subscription
866	order_status VARCHAR(50) NOT NULL,
867	payment_status VARCHAR(50) NOT NULL,
868	subtotal_price DECIMAL(13, 2) NOT NULL, -- price calculation based on course sale price
869	total_price DECIMAL(13, 2) NOT NULL, -- final price
870	net_payment DECIMAL(13, 2) NOT NULL, -- calculated price if any refund is done else same as total_price
871	coupon_code VARCHAR(255),
872	coupon_amount DECIMAL(13, 2),
873	discount_type ENUM('percentage', 'flat') DEFAULT NULL,
874	discount_amount DECIMAL(13, 2),
875	discount_reason TEXT,
876	tax_rate DECIMAL(13, 2) COMMENT 'Tax percentage',
877	tax_amount DECIMAL(13, 2),
878	fees DECIMAL(13, 2), -- payment gateway fees
879	earnings DECIMAL(13, 2), -- net earning
880	refund_amount DECIMAL(13, 2), -- Refund amount
881	payment_method VARCHAR(255),
882	payment_payloads LONGTEXT,
883	note TEXT,
884	created_at_gmt DATETIME NOT NULL,
885	created_by BIGINT(20) UNSIGNED NOT NULL,
886	updated_at_gmt DATETIME,
887	updated_by BIGINT(20) UNSIGNED NOT NULL,
888	PRIMARY KEY (id),
889	KEY user_id (user_id),
890	KEY order_type (order_type),
891	KEY payment_status (payment_status),
892	KEY order_status (order_status),
893	KEY transaction_id (transaction_id)
894	) $charset_collate;";
895
896	$order_meta_table = "CREATE TABLE {$wpdb->prefix}tutor_ordermeta (
897	id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
898	order_id BIGINT(20) UNSIGNED NOT NULL,
899	meta_key VARCHAR(255) NOT NULL,
900	meta_value LONGTEXT NOT NULL,
901	created_at_gmt DATETIME NOT NULL,
902	created_by BIGINT(20) UNSIGNED NOT NULL,
903	updated_at_gmt DATETIME,
904	updated_by BIGINT(20) UNSIGNED NOT NULL,
905	PRIMARY KEY (id),
906	KEY order_id (order_id),
907	KEY meta_key (meta_key),
908	CONSTRAINT fk_tutor_ordermeta_order_id FOREIGN KEY (order_id) REFERENCES {$wpdb->prefix}tutor_orders(id) ON DELETE CASCADE
909	) $charset_collate;";
910
911	$order_items_table = "CREATE TABLE {$wpdb->prefix}tutor_order_items (
912	id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
913	order_id BIGINT(20) UNSIGNED NOT NULL,
914	item_id BIGINT(20) UNSIGNED NOT NULL, -- course id/plan id
915	regular_price DECIMAL(13, 2) NOT NULL, -- course regular price
916	sale_price VARCHAR(13) DEFAULT NULL, -- course sale price
917	discount_price VARCHAR(13) DEFAULT NULL, -- course discount price
918	coupon_code VARCHAR(255) DEFAULT NULL, -- coupon code
919	PRIMARY KEY (id),
920	KEY order_id (order_id),
921	KEY item_id (item_id),
922	CONSTRAINT fk_tutor_order_item_order_id FOREIGN KEY (order_id) REFERENCES {$wpdb->prefix}tutor_orders(id) ON DELETE CASCADE
923	) $charset_collate;";
924
925	$coupons_table = "CREATE TABLE {$wpdb->prefix}tutor_coupons (
926	id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
927	coupon_status VARCHAR(50),
928	coupon_type VARCHAR(100) DEFAULT 'code', -- coupon type 'code' or 'automatic'
929	coupon_code VARCHAR(50) NOT NULL,
930	coupon_title VARCHAR(255) NOT NULL,
931	coupon_description TEXT,
932	discount_type ENUM('percentage', 'flat') NOT NULL,
933	discount_amount DECIMAL(13, 2) NOT NULL,
934	applies_to VARCHAR(100) DEFAULT 'all_courses_and_bundles', -- possible values 'all_courses_and_bundles', 'all_courses', 'all_bundles', 'specific_courses', 'specific_bundles', 'specific_category'
935	total_usage_limit INT(10) UNSIGNED DEFAULT NULL, -- null for unlimited usage
936	per_user_usage_limit TINYINT(4) UNSIGNED DEFAULT NULL, -- null for unlimited usage
937	purchase_requirement VARCHAR(50) DEFAULT 'no_minimum', -- possible values 'no_minimum', 'minimum_purchase', 'minimum_quantity'
938	purchase_requirement_value DECIMAL(13, 2),
939	start_date_gmt DATETIME NOT NULL,
940	expire_date_gmt DATETIME DEFAULT NULL,
941	created_at_gmt DATETIME NOT NULL,
942	created_by BIGINT(20) UNSIGNED NOT NULL,
943	updated_at_gmt DATETIME,
944	updated_by BIGINT(20) UNSIGNED NOT NULL,
945	PRIMARY KEY (id),
946	UNIQUE KEY coupon_code (coupon_code),
947	KEY start_date_gmt (start_date_gmt),
948	KEY expire_date_gmt (expire_date_gmt)
949	) $charset_collate;";
950
951	$coupon_applications_table = "CREATE TABLE {$wpdb->prefix}tutor_coupon_applications (
952	coupon_code VARCHAR(50) NOT NULL,
953	reference_id BIGINT(20) UNSIGNED NOT NULL,
954	KEY coupon_code (coupon_code),
955	KEY reference_id (reference_id),
956	CONSTRAINT fk_tutor_coupon_application_coupon_code FOREIGN KEY (coupon_code) REFERENCES {$wpdb->prefix}tutor_coupons(coupon_code) ON DELETE CASCADE
957	) $charset_collate;";
958
959	$coupon_usage_table = "CREATE TABLE {$wpdb->prefix}tutor_coupon_usages (
960	id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
961	coupon_code VARCHAR(50) NOT NULL,
962	user_id BIGINT(20) UNSIGNED NOT NULL,
963	PRIMARY KEY (id),
964	KEY coupon_code (coupon_code),
965	KEY user_id (user_id),
966	CONSTRAINT fk_tutor_coupon_usage_coupon_code FOREIGN KEY (coupon_code) REFERENCES {$wpdb->prefix}tutor_coupons(coupon_code) ON DELETE CASCADE,
967	CONSTRAINT fk_tutor_coupon_usage_user_id FOREIGN KEY (user_id) REFERENCES {$wpdb->prefix}users(ID) ON DELETE CASCADE
968	) $charset_collate;";
969
970	$cart_table = "CREATE TABLE {$wpdb->prefix}tutor_carts (
971	id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
972	user_id BIGINT(20) UNSIGNED DEFAULT NULL,
973	coupon_code VARCHAR(50) DEFAULT NULL,
974	created_at_gmt DATETIME NOT NULL,
975	updated_at_gmt DATETIME,
976	PRIMARY KEY (id),
977	KEY user_id (user_id),
978	KEY coupon_code (coupon_code),
979	CONSTRAINT fk_tutor_cart_user_id FOREIGN KEY (user_id) REFERENCES {$wpdb->prefix}users(ID) ON DELETE CASCADE
980	) $charset_collate;";
981
982	$cart_items_table = "CREATE TABLE {$wpdb->prefix}tutor_cart_items (
983	id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
984	cart_id BIGINT(20) UNSIGNED NOT NULL,
985	course_id BIGINT(20) UNSIGNED NOT NULL,
986	PRIMARY KEY (id),
987	KEY cart_id (cart_id),
988	KEY course_id (course_id),
989	CONSTRAINT fk_tutor_cart_item_cart_id FOREIGN KEY (cart_id) REFERENCES {$wpdb->prefix}tutor_carts(id) ON DELETE CASCADE,
990	CONSTRAINT fk_tutor_cart_item_course_id FOREIGN KEY (course_id) REFERENCES {$wpdb->prefix}posts(ID) ON DELETE CASCADE
991	) $charset_collate;";
992
993	$customer_table = "CREATE TABLE {$wpdb->prefix}tutor_customers (
994	id BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
995	user_id BIGINT(20) UNSIGNED DEFAULT NULL,
996	billing_first_name VARCHAR(255) NOT NULL,
997	billing_last_name VARCHAR(255) NOT NULL,
998	billing_email VARCHAR(255) NOT NULL,
999	billing_phone VARCHAR(20) NOT NULL,
1000	billing_zip_code VARCHAR(20) NOT NULL,
1001	billing_address TEXT NOT NULL,
1002	billing_country VARCHAR(100) NOT NULL,
1003	billing_state VARCHAR(100) NOT NULL,
1004	billing_city VARCHAR(100) NOT NULL,
1005	PRIMARY KEY (id),
1006	KEY user_id (user_id),
1007	KEY billing_email (billing_email)
1008	) $charset_collate;";
1009
1010	require_once ABSPATH . 'wp-admin/includes/upgrade.php';
1011	dbDelta( $quiz_attempts_sql );
1012	dbDelta( $quiz_attempt_answers );
1013	dbDelta( $tutor_quiz_questions );
1014	dbDelta( $tutor_quiz_question_answers );
1015	dbDelta( $earning_table );
1016	dbDelta( $withdraw_table );
1017	dbDelta( $orders_table );
1018	dbDelta( $order_meta_table );
1019	dbDelta( $order_items_table );
1020	dbDelta( $coupons_table );
1021	dbDelta( $coupon_applications_table );
1022	dbDelta( $coupon_usage_table );
1023	dbDelta( $cart_table );
1024	dbDelta( $cart_items_table );
1025	dbDelta( $customer_table );
1026	}
1027
1028	/**
1029	* Manage tutor roles & permission
1030	*
1031	* @return void
1032	*/
1033	public static function manage_tutor_roles_and_permissions() {
1034	/**
1035	* Add role for instructor
1036	*/
1037	$instructor_role = tutor()->instructor_role;
1038
1039	remove_role( $instructor_role );
1040	add_role( $instructor_role, __( 'Tutor Instructor', 'tutor' ), array() );
1041
1042	$custom_post_type_permission = array(
1043	// Manage Instructor.
1044	'manage_tutor_instructor',
1045
1046	// Tutor Posts Type Permission.
1047	'edit_tutor_course',
1048	'read_tutor_course',
1049	'delete_tutor_course',
1050	'delete_tutor_courses',
1051	'edit_tutor_courses',
1052	'edit_others_tutor_courses',
1053	'read_private_tutor_courses',
1054	'edit_tutor_courses',
1055
1056	'edit_tutor_lesson',
1057	'read_tutor_lesson',
1058	'delete_tutor_lesson',
1059	'delete_tutor_lessons',
1060	'edit_tutor_lessons',
1061	'edit_others_tutor_lessons',
1062	'read_private_tutor_lessons',
1063	'edit_tutor_lessons',
1064	'publish_tutor_lessons',
1065
1066	'edit_tutor_quiz',
1067	'read_tutor_quiz',
1068	'delete_tutor_quiz',
1069	'delete_tutor_quizzes',
1070	'edit_tutor_quizzes',
1071	'edit_others_tutor_quizzes',
1072	'read_private_tutor_quizzes',
1073	'edit_tutor_quizzes',
1074	'publish_tutor_quizzes',
1075
1076	'edit_tutor_question',
1077	'read_tutor_question',
1078	'delete_tutor_question',
1079	'delete_tutor_questions',
1080	'edit_tutor_questions',
1081	'edit_others_tutor_questions',
1082	'publish_tutor_questions',
1083	'read_private_tutor_questions',
1084	'edit_tutor_questions',
1085	);
1086
1087	$instructor = get_role( $instructor_role );
1088	if ( $instructor ) {
1089	$instructor_cap = array(
1090	'edit_posts',
1091	'read',
1092	'upload_files',
1093	);
1094
1095	$instructor_cap = array_merge( $instructor_cap, $custom_post_type_permission );
1096
1097	$can_publish_course = (bool) tutor_utils()->get_option( 'instructor_can_publish_course' );
1098	if ( $can_publish_course ) {
1099	$instructor_cap[] = 'publish_tutor_courses';
1100	}
1101
1102	foreach ( $instructor_cap as $cap ) {
1103	$instructor->add_cap( $cap );
1104	}
1105	}
1106
1107	$administrator = get_role( 'administrator' );
1108	if ( $administrator ) {
1109
1110	$administrator_cap = array(
1111	'manage_tutor',
1112	);
1113	$administrator_cap = array_merge( $administrator_cap, $custom_post_type_permission );
1114	$administrator_cap[] = 'publish_tutor_courses';
1115
1116	foreach ( $administrator_cap as $cap ) {
1117	$administrator->add_cap( $cap );
1118	}
1119	}
1120
1121	/**
1122	* Add Instructor role to administrator
1123	*/
1124	if ( current_user_can( 'administrator' ) ) {
1125	tutor_utils()->add_instructor_role( get_current_user_id() );
1126	}
1127	}
1128
1129	/**
1130	* On plugin activate save initial data
1131	* Like: generate tutor pages
1132	*
1133	* @since 1.0.0
1134	*
1135	* @return void
1136	*/
1137	public static function save_data() {
1138
1139	$student_dashboard_args = array(
1140	'post_title' => __( 'Dashboard', 'tutor' ),
1141	'post_content' => '',
1142	'post_type' => 'page',
1143	'post_status' => 'publish',
1144	);
1145	$student_dashboard_page_id = wp_insert_post( $student_dashboard_args );
1146	tutor_utils()->update_option( 'tutor_dashboard_page_id', $student_dashboard_page_id );
1147
1148	$student_registration_args = array(
1149	'post_title' => __( 'Student Registration', 'tutor' ),
1150	'post_content' => '[tutor_student_registration_form]',
1151	'post_type' => 'page',
1152	'post_status' => 'publish',
1153	);
1154	$student_register_page_id = wp_insert_post( $student_registration_args );
1155	tutor_utils()->update_option( 'student_register_page', $student_register_page_id );
1156
1157	$instructor_registration_args = array(
1158	'post_title' => __( 'Instructor Registration', 'tutor' ),
1159	'post_content' => '[tutor_instructor_registration_form]',
1160	'post_type' => 'page',
1161	'post_status' => 'publish',
1162	);
1163	$instructor_registration_id = wp_insert_post( $instructor_registration_args );
1164	tutor_utils()->update_option( 'instructor_register_page', $instructor_registration_id );
1165	}
1166
1167	/**
1168	* Default options
1169	*
1170	* @since 1.0.0
1171	*
1172	* @since 3.4.1 Supported video sources added
1173	*
1174	* @return array
1175	*/
1176	public static function default_options() {
1177	$options = array(
1178	'pagination_per_page' => '20',
1179	'course_allow_upload_private_files' => '1',
1180	'display_course_instructors' => '1',
1181	'enable_q_and_a_on_course' => '1',
1182	'courses_col_per_row' => '3',
1183	'courses_per_page' => '12',
1184	'course_permalink_base' => 'courses',
1185	'lesson_permalink_base' => 'lessons',
1186	'quiz_when_time_expires' => 'autosubmit',
1187	'quiz_attempts_allowed' => '10',
1188	'quiz_grade_method' => 'highest_grade',
1189	'enable_public_profile' => '1',
1190	'email_to_students' =>
1191	array(
1192	'quiz_completed' => '1',
1193	'completed_course' => '1',
1194	),
1195	'email_to_instructors' =>
1196	array(
1197	'a_student_enrolled_in_course' => '1',
1198	'a_student_completed_course' => '1',
1199	'a_student_completed_lesson' => '1',
1200	'a_student_placed_question' => '1',
1201	),
1202	'email_from_name' => get_option( 'blogname' ),
1203	'email_from_address' => get_option( 'admin_email' ),
1204	'email_footer_text' => '',
1205	'earning_admin_commission' => '20',
1206	'earning_admin_commission' => '20',
1207	'earning_instructor_commission' => '80',
1208	'color_preset_type' => 'default',
1209
1210	// Default options for tutor ecommerce.
1211	'monetize_by' => Ecommerce::MONETIZE_BY,
1212	'currency_code' => 'USD',
1213	'currency_position' => 'left',
1214	'thousand_separator' => ',',
1215	'decimal_separator' => '.',
1216	'number_of_decimals' => '2',
1217	'is_coupon_applicable' => 'on',
1218	'supported_video_sources' => array(
1219	'html5',
1220	'external_url',
1221	'youtube',
1222	'vimeo',
1223	'embedded',
1224	'shortcode',
1225	),
1226	);
1227
1228	return $options;
1229	}
1230
1231
1232	/**
1233	* Create withdraw database
1234	*
1235	* @since 1.2.0
1236	*/
1237	public static function create_withdraw_database() {
1238	global $wpdb;
1239
1240	$charset_collate = $wpdb->get_charset_collate();
1241
1242	/**
1243	* Table SQL
1244	*
1245	* {$wpdb->prefix}tutor_earnings
1246	* {$wpdb->prefix}tutor_withdraws
1247	*
1248	* @since 1.2.0
1249	*/
1250
1251	$earning_table = "CREATE TABLE IF NOT EXISTS {$wpdb->prefix}tutor_earnings (
1252	earning_id bigint(20) NOT NULL AUTO_INCREMENT,
1253	user_id bigint(20) DEFAULT NULL,
1254	course_id bigint(20) DEFAULT NULL,
1255	order_id bigint(20) DEFAULT NULL,
1256	order_status varchar(50) DEFAULT NULL,
1257	course_price_total decimal(16,2) DEFAULT NULL,
1258	course_price_grand_total decimal(16,2) DEFAULT NULL,
1259	instructor_amount decimal(16,2) DEFAULT NULL,
1260	instructor_rate decimal(16,2) DEFAULT NULL,
1261	admin_amount decimal(16,2) DEFAULT NULL,
1262	admin_rate decimal(16,2) DEFAULT NULL,
1263	commission_type varchar(20) DEFAULT NULL,
1264	deduct_fees_amount decimal(16,2) DEFAULT NULL,
1265	deduct_fees_name varchar(250) DEFAULT NULL,
1266	deduct_fees_type varchar(20) DEFAULT NULL,
1267	process_by varchar(20) DEFAULT NULL,
1268	created_at datetime DEFAULT NULL,
1269	PRIMARY KEY (earning_id)
1270	) $charset_collate;";
1271
1272	$withdraw_table = "CREATE TABLE IF NOT EXISTS {$wpdb->prefix}tutor_withdraws (
1273	withdraw_id bigint(20) NOT NULL AUTO_INCREMENT,
1274	user_id bigint(20) DEFAULT NULL,
1275	amount decimal(16,2) DEFAULT NULL,
1276	method_data text DEFAULT NULL,
1277	status varchar(50) DEFAULT NULL,
1278	updated_at datetime DEFAULT NULL,
1279	created_at datetime DEFAULT NULL,
1280	PRIMARY KEY (withdraw_id)
1281	) $charset_collate;";
1282
1283	require_once ABSPATH . 'wp-admin/includes/upgrade.php';
1284	dbDelta( $earning_table );
1285	dbDelta( $withdraw_table );
1286
1287	/**
1288	* Setting previous dashboard to new dashboard
1289	*/
1290	$previous_dashboard_page_id = (int) tutor_utils()->get_option( 'student_dashboard' );
1291	tutor_utils()->update_option( 'tutor_dashboard_page_id', $previous_dashboard_page_id );
1292	}
1293
1294	/**
1295	* Filter the wp_doing_ajax from tutor requests to get advanced
1296	* advantages from Tutor
1297	*
1298	* @since 1.3.4
1299	*
1300	* @param bool $bool default value.
1301	*
1302	* @return bool
1303	*/
1304	public function wp_doing_ajax( $bool ) {
1305	// Don't use Input::has helper to avoid conflict.
1306	if ( isset( $_REQUEST['tutor_ajax_action'] ) ) {
1307	return true;
1308	}
1309	return $bool;
1310	}
1311
1312	/**
1313	* Handle plugin un-installation
1314	*
1315	* @since 2.6.2
1316	*
1317	* @return void
1318	*/
1319	public static function tutor_uninstall() {
1320	self::erase_tutor_data();
1321	}
1322
1323	/**
1324	* Erase tutor data
1325	*
1326	* @since 2.6.2
1327	*
1328	* @return void
1329	*/
1330	public static function erase_tutor_data() {
1331	global $wpdb;
1332
1333	$is_erase_data = tutor_utils()->get_option( 'delete_on_uninstall' );
1334	// Deleting Data.
1335
1336	if ( $is_erase_data ) {
1337	/**
1338	* Deleting Post Type, Meta Data, taxonomy
1339	*/
1340	$course_post_type = tutor()->course_post_type;
1341	$lesson_post_type = tutor()->lesson_post_type;
1342
1343	$post_types = array(
1344	$course_post_type,
1345	$lesson_post_type,
1346	'tutor_quiz',
1347	'tutor_enrolled',
1348	'topics',
1349	'tutor_enrolled',
1350	'tutor_announcements',
1351	);
1352
1353	$post_type_strings = "'" . implode( "','", $post_types ) . "'";
1354	$tutor_posts = $wpdb->get_col( "SELECT ID from {$wpdb->posts} WHERE post_type in({$post_type_strings}) ;" ); //phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
1355
1356	if ( is_array( $tutor_posts ) && count( $tutor_posts ) ) {
1357	foreach ( $tutor_posts as $post_id ) {
1358	// Delete categories.
1359	$terms = wp_get_object_terms( $post_id, CourseModel::COURSE_CATEGORY );
1360	foreach ( $terms as $term ) {
1361	wp_remove_object_terms( $post_id, array( $term->term_id ), CourseModel::COURSE_CATEGORY );
1362	}
1363
1364	// Delete tags if available.
1365	$terms = wp_get_object_terms( $post_id, CourseModel::COURSE_TAG );
1366	foreach ( $terms as $term ) {
1367	wp_remove_object_terms( $post_id, array( $term->term_id ), CourseModel::COURSE_TAG );
1368	}
1369
1370	// Delete All Meta.
1371	$wpdb->delete( $wpdb->postmeta, array( 'post_id' => $post_id ) );
1372	$wpdb->delete( $wpdb->posts, array( 'ID' => $post_id ) );
1373	}
1374	}
1375
1376	/**
1377	* Deleting Comments (reviews, questions, quiz_answers, etc)
1378	*/
1379	$tutor_comments = $wpdb->get_col( "SELECT comment_ID from {$wpdb->comments} WHERE comment_agent = 'comment_agent' ;" );
1380	$comments_ids_strings = "'" . implode( "','", $tutor_comments ) . "'";
1381	if ( is_array( $tutor_comments ) && count( $tutor_comments ) ) {
1382	$wpdb->query( "DELETE from {$wpdb->commentmeta} WHERE comment_ID in({$comments_ids_strings}) " ); //phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
1383	}
1384	$wpdb->delete( $wpdb->comments, array( 'comment_agent' => 'comment_agent' ) );
1385
1386	/**
1387	* Delete Options
1388	*/
1389
1390	delete_option( 'tutor_option' );
1391	$wpdb->delete( $wpdb->usermeta, array( 'meta_key' => '_is_tutor_student' ) );
1392	$wpdb->delete( $wpdb->usermeta, array( 'meta_key' => '_tutor_instructor_approved' ) );
1393	$wpdb->delete( $wpdb->usermeta, array( 'meta_key' => '_tutor_instructor_status' ) );
1394	$wpdb->delete( $wpdb->usermeta, array( 'meta_key' => '_is_tutor_instructor' ) );
1395	$wpdb->query( "DELETE FROM {$wpdb->usermeta} WHERE meta_key LIKE '%_tutor_completed_lesson_id_%' " );
1396
1397	// Deleting Table.
1398	$prefix = $wpdb->prefix;
1399	//phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
1400	$wpdb->query( "DROP TABLE IF EXISTS {$prefix}tutor_quiz_attempts, {$prefix}tutor_quiz_attempt_answers, {$prefix}tutor_quiz_questions, {$prefix}tutor_quiz_question_answers, {$prefix}tutor_earnings, {$prefix}tutor_withdraws " );
1401
1402	}
1403	}
1404	}
1405