%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* Helper tool to uprgade database from 0.9.x
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
/**
* Class LP_Upgrade_From_09
*/
class LP_Upgrade_From_09 {
/**
* All steps for update actions
*
* @var array
*/
protected $_steps = array(
'welcome',
'upgraded'
);
/**
* Current step
*
* @var string
*/
protected $_current_step = '';
/**
* @var array
*/
public static $courses_map = array();
/**
* @var array
*/
public static $orders_map = array();
/**
* @var array
*/
public static $course_order_map = array();
/**
* @var array
*/
public static $quizzes_map = array();
/**
* @var array
*/
public static $lessons_map = array();
/**
* @var array
*/
public static $questions_map = array();
/**
* Constructor
*/
public function __construct() {
$this->_prevent_access_admin();
$this->learn_press_upgrade_10_page();
}
/**
* Redirect user to Dashboard if they are trying to access the menus in old version
*/
private function _prevent_access_admin() {
if ( ( $this->check_post_types() ) ) {
wp_redirect( admin_url( 'index.php' ) );
exit;
}
}
/**
* Check if user trying to access the old custom post type
*
* @return bool
*/
private function check_post_types() {
$post_type = ! empty( $_REQUEST['post_type'] ) ? $_REQUEST['post_type'] : '';
if ( ! $post_type ) {
$post_id = ! empty( $_REQUEST['post'] ) ? absint( $_REQUEST['post'] ) : 0;
if ( $post_id ) {
$post_type = get_post_field( $post_id, 'post_type' );
}
}
$old_post_types = array( 'lpr_course', 'lpr_lesson', 'lpr_quiz', 'lpr_question', 'lpr_order' );
return in_array( $post_type, $old_post_types );
}
/**
* Check if user trying to access LearnPress admin menu
*
* @return bool
*/
private function check_admin_menu() {
$admin_page = ! empty( $_REQUEST['page'] ) ? $_REQUEST['page'] : '';
return preg_match( '!^learn_press_!', $admin_page );
}
/**
* Any value is null, empty, false, 'no', 'off' consider is false
*
* @param $value
*
* @return bool
*/
private function _is_false_value( $value ) {
if ( is_numeric( $value ) ) {
return $value == 0;
} elseif ( is_string( $value ) ) {
return ( empty( $value ) || is_null( $value ) || in_array( $value, array( 'no', 'off', 'false' ) ) );
}
return ! ! $value;
}
/**
* Converts old curriculum to new
*
* @param $old_id
* @param $new_id
*
* @return array
*/
private function _create_curriculum( $old_id, $new_id ) {
global $wpdb;
$curriculum = get_post_meta( $old_id, '_lpr_course_lesson_quiz', true );
$section_items = array();
$post_ids = array();
if ( $curriculum ) {
foreach ( $curriculum as $order => $section ) {
$result = $wpdb->insert(
$wpdb->prefix . 'learnpress_sections',
array(
'section_name' => $section['name'],
'section_course_id' => $new_id,
'section_order' => $order + 1
),
array( '%s', '%d', '%d' )
);
if ( $result ) {
$section_id = $wpdb->insert_id;
$lesson_quiz = ! empty( $section['lesson_quiz'] ) ? $section['lesson_quiz'] : array();
$post_ids = array_merge( $post_ids, $lesson_quiz );
$lesson_quiz = self::get_posts_by_ids( $lesson_quiz, array( 'lpr_lesson', 'lpr_quiz' ) );
if ( ! $lesson_quiz ) {
continue;
}
$order = 1;
foreach ( $lesson_quiz as $obj ) {
if ( $obj['post_type'] == 'lpr_quiz' ) {
$obj['post_type'] = LP_QUIZ_CPT;
} elseif ( $obj['post_type'] == 'lpr_lesson' ) {
$obj['post_type'] = LP_LESSON_CPT;
}
$obj_id = $obj['ID'];
unset( $obj['ID'] );
$return = array();
if ( $new_obj_id = wp_insert_post( $obj ) ) {
$wpdb->insert(
$wpdb->prefix . 'learnpress_section_items',
array(
'section_id' => $section_id,
'item_id' => $new_obj_id,
'item_order' => $order ++,
'item_type' => $obj['post_type']
)
);
$return['id'] = $new_obj_id;
if ( $obj['post_type'] == LP_QUIZ_CPT ) {
$this->_create_quiz_meta( $obj_id, $new_obj_id );
$new_questions = $this->_create_quiz_questions( $obj_id, $new_obj_id );
$return['questions'] = $new_questions;
self::$quizzes_map[ $obj_id ] = $new_obj_id;
} elseif ( $obj['post_type'] == LP_LESSON_CPT ) {
$this->_create_lesson_meta( $obj_id, $new_obj_id );
$this->_update_lesson_tag( $obj_id, $new_obj_id );
$this->_update_lesson_format( $obj_id, $new_obj_id );
self::$lessons_map[ $obj_id ] = $new_obj_id;
}
}
$section_items[ $obj_id ] = $return;
}
}
}
}
return $section_items;
}
/**
* Upgrade items is not assigned to any courses
*/
private function _upgrade_unassigned_items( $force = false ) {
global $wpdb;
$exclude = array();
if ( self::$quizzes_map ) {
$exclude = array_keys( self::$quizzes_map );
}
if ( self::$lessons_map ) {
$exclude = array_merge( $exclude, array_keys( self::$lessons_map ) );
}
$exclude = array_filter( $exclude );
$query = $wpdb->prepare( "
SELECT DISTINCT p.*, pm.meta_value as upgraded
FROM {$wpdb->posts} p
LEFT JOIN {$wpdb->postmeta} pm ON pm.post_id = p.ID AND pm.meta_key = %s
WHERE post_type IN (%s, %s)
" . ( $exclude ? "AND ID NOT IN(" . join( ',', $exclude ) . ")" : "" ) . "
" . ( ! $force ? "HAVING upgraded IS NULL" : "" ) . "
", '_learn_press_upgraded', 'lpr_quiz', 'lpr_lesson' );
if ( ! $items = $wpdb->get_results( $query, OBJECT_K ) ) {
return;
}
foreach ( $items as $obj ) {
$obj = (array) $obj;
if ( $obj['post_type'] == 'lpr_quiz' ) {
$obj['post_type'] = LP_QUIZ_CPT;
} elseif ( $obj['post_type'] == 'lpr_lesson' ) {
$obj['post_type'] = LP_LESSON_CPT;
}
$obj_id = $obj['ID'];
unset( $obj['ID'] );
$return = array();
if ( $new_obj_id = wp_insert_post( $obj ) ) {
if ( $obj['post_type'] == LP_QUIZ_CPT ) {
$this->_create_quiz_meta( $obj_id, $new_obj_id );
$new_questions = $this->_create_quiz_questions( $obj_id, $new_obj_id );
$return['questions'] = $new_questions;
self::$quizzes_map[ $obj_id ] = $new_obj_id;
} elseif ( $obj['post_type'] == LP_LESSON_CPT ) {
$this->_create_lesson_meta( $obj_id, $new_obj_id );
$this->_update_lesson_tag( $obj_id, $new_obj_id );
$this->_update_lesson_format( $obj_id, $new_obj_id );
self::$lessons_map[ $obj_id ] = $new_obj_id;
}
}
}
}
/**
* Upgrade items is not assigned to any questions
*/
private function _upgrade_unassigned_questions( $force = false ) {
global $wpdb;
$exclude = array();
if ( self::$questions_map ) {
$exclude = array_keys( self::$questions_map );
}
$exclude = array_filter( $exclude );
$query = $wpdb->prepare( "
SELECT DISTINCT p.*, pm.meta_value as upgraded
FROM {$wpdb->posts} p
LEFT JOIN {$wpdb->postmeta} pm ON pm.post_id = p.ID AND pm.meta_key = %s
WHERE post_type IN (%s)
" . ( $exclude ? "AND ID NOT IN(" . join( ',', $exclude ) . ")" : "" ) . "
" . ( ! $force ? "HAVING upgraded IS NULL" : "" ) . "
", '_learn_press_upgraded', 'lpr_question' );
if ( ! $items = $wpdb->get_results( $query, OBJECT_K ) ) {
return;
}
foreach ( $items as $obj ) {
$obj = (array) $obj;
$obj_id = $obj['ID'];
unset( $obj['ID'] );
$obj['post_type'] = LP_QUESTION_CPT;
if ( $new_obj_id = wp_insert_post( $obj ) ) {
$this->_create_question_meta( $obj_id, $new_obj_id );
$this->_update_question_tag( $obj_id, $new_obj_id );
self::$questions_map[ $obj_id ] = $new_obj_id;
}
}
}
/**
* @param $old_id
* @param $new_id
*/
private function _update_lesson_tag( $old_id, $new_id ) {
$tags = array();
if ( $terms = wp_get_object_terms( $old_id, array( 'lesson_tag', 'lesson-tag' ) ) ) {
foreach ( $terms as $term ) {
if ( $term->taxonomy == 'lesson-tag' ) {
$_term = term_exists( $term->name, 'lesson_tag' );
if ( $_term === 0 || $_term === null ) {
$_term = wp_insert_term(
$term->name, // the term
'lesson_tag', // the taxonomy
array(
'description' => $term->description,
'slug' => $term->slug,
'parent' => $term->parent
)
);
}
if ( ! is_wp_error( $_term ) ) {
$tags[] = absint( $_term['term_id'] );
}
} else {
$tags[] = abs( $term->term_id );
}
}
}
if ( $tags ) {
wp_set_object_terms( $new_id, $tags, 'lesson_tag' );
}
}
public function _update_lesson_format( $old_id, $new_id ) {
if ( $format = get_post_format( $old_id ) ) {
set_post_format( $new_id, $format );
}
}
/**
* Converts old course meta to new
*
* @param $old_id
* @param $new_id
*/
private function _create_course_meta( $old_id, $new_id ) {
$keys = array(
'_lpr_course_duration' => '_lp_duration',
'_lpr_course_price' => '_lp_price',
'_lpr_course_student' => '_lp_students',
'_lpr_max_course_number_student' => '_lp_max_students',
'_lpr_retake_course' => '_lp_retake_count',
'_lpr_course_final' => '_lp_final_quiz',
'_lpr_course_condition' => '_lp_passing_condition',
'_lpr_course_enrolled_require' => '_lp_required_enroll',
'_lpr_course_payment' => '_lp_payment',
'_lpr_course_certificate' => '_lp_cert'
);
$course_meta = self::get_post_meta( $old_id, array_keys( $keys ) );
if ( $course_meta ) {
foreach ( $course_meta as $meta ) {
$new_key = $keys[ $meta['meta_key'] ];
$new_value = $meta['meta_value'];
switch ( $new_key ) {
//
case '_lp_payment':
if ( $new_value == 'free' ) {
$new_value = 'no';
} elseif ( $new_value == 'not_free' ) {
$new_value = 'yes';
}
break;
case '_lp_required_enroll':
if ( $this->_is_false_value( $new_value ) ) {
$new_value = 'no';
} else {
$new_value = 'yes';
}
break;
case '_lp_cert': // update certificate
$cert_id = absint( $new_value );
$cert_data = get_post_meta( $cert_id, '_lpr_cert', true );
$cert_post = get_post( $cert_id );
if ( $cert_post && $cert_post->post_type == 'lpr_certificate' ) {
$cert_post = get_object_vars( $cert_post );
unset( $cert_post['ID'] );
$cert_post['post_type'] = 'lp_cert';
$new_cert_id = wp_insert_post( $cert_post );
if ( $new_cert_id ) {
if ( ! empty( $cert_data['id'] ) ) {
$attachment_id = $cert_data['id'];
$attachment = wp_get_attachment_url( $attachment_id );
update_post_meta( $new_cert_id, '_lp_cert_template', $attachment );
if ( ! empty( $cert_data['layers'] ) ) {
update_post_meta( $new_cert_id, '_lp_cert_layers', $cert_data['layers'] );
}
}
update_post_meta( $new_id, '_lp_cert', $new_cert_id );
}
}
continue;
}
add_post_meta( $new_id, $new_key, $new_value );
}
}
/**
* bbPress addon
*/
if ( $forum_id = get_post_meta( $old_id, '_lpr_forum_course_id', true ) ) {
add_post_meta( $new_id, '_lp_course_forum', $forum_id );
add_post_meta( $new_id, '_lp_bbpress_forum_enable', 'yes' );
add_post_meta( $new_id, '_lp_bbpress_forum_enrolled_user', 'yes' );
}
/**
* Co-Instructors addon
*/
if ( $co_instructors = get_post_meta( $old_id, '_lpr_co_teacher' ) ) {
foreach ( $co_instructors as $user_id ) {
add_post_meta( $new_id, '_lp_co_teacher', $user_id );
}
}
/**
* Update other meta data
*/
$this->update_post_metas(
$old_id,
$new_id,
array_merge( array_keys( $keys ), array( '_lpr_forum_course_id', '_lpr_co_teacher' ) )
);
}
private function _create_quiz_meta( $old_id, $new_id ) {
$keys = array(
'_lpr_quiz_questions' => null,
'_lpr_duration' => '_lp_duration',
'_lpr_retake_quiz' => '_lp_retake_count',
'_lpr_show_quiz_result' => '_lp_show_result',
'_lpr_show_question_answer' => '_lp_show_check_answer',
'_lpr_course' => null
);
$quiz_meta = self::get_post_meta( $old_id, array_keys( $keys ) );
if ( $quiz_meta ) {
foreach ( $quiz_meta as $meta ) {
if ( ! $keys[ $meta['meta_key'] ] ) {
continue;
}
$new_key = $keys[ $meta['meta_key'] ];
$new_value = $meta['meta_value'];
switch ( $new_key ) {
case '_lp_show_result':
case '_lp_show_check_answer':
if ( $this->_is_false_value( $new_value ) ) {
$new_value = 'no';
} else {
$new_value = 'yes';
}
}
add_post_meta( $new_id, $new_key, $new_value );
}
}
//update_post_meta( $new_id, '_lp_show_explanation', 'no' );
update_post_meta( $new_id, '_lp_show_hint', 'yes' );
/**
* Update other meta data
*/
$this->update_post_metas(
$old_id,
$new_id,
array_keys( $keys )
);
$this->_mark_upgraded( $old_id, $new_id );
}
private function _create_lesson_meta( $old_id, $new_id ) {
$keys = array(
'_lpr_lesson_duration' => '_lp_duration',
'_lpr_lesson_preview' => '_lp_preview',
'_lpr_course' => null
);
$quiz_meta = self::get_post_meta( $old_id, array_keys( $keys ) );
if ( $quiz_meta ) {
foreach ( $quiz_meta as $meta ) {
if ( ! $keys[ $meta['meta_key'] ] ) {
continue;
}
$new_key = $keys[ $meta['meta_key'] ];
$new_value = $meta['meta_value'];
switch ( $new_key ) {
case '_lp_preview':
if ( $this->_is_false_value( $new_value ) || $new_value == 'not_preview' ) {
$new_value = 'no';
} else {
$new_value = 'yes';
}
}
add_post_meta( $new_id, $new_key, $new_value );
}
}
if ( $post_thumbnail_id = get_post_thumbnail_id( $old_id ) ) {
set_post_thumbnail( $new_id, $post_thumbnail_id );
}
/**
* Update other meta data
*/
$this->update_post_metas(
$old_id,
$new_id,
array_keys( $keys )
);
$this->_mark_upgraded( $old_id, $new_id );
}
private function _create_quiz_questions( $old_quiz_id, $new_quiz_id ) {
$_items = get_post_meta( $old_quiz_id, '_lpr_quiz_questions', true );
if ( ! $_items ) {
return 0;
}
$_items = array_keys( $_items );
$_questions = $this->get_posts_by_ids( $_items );
if ( ! $_questions ) {
return 0;
}
global $wpdb;
$new_questions = array();
$order = 0;
foreach ( $_questions as $question ) {
$post_data = (array) $question;
$old_question_id = $post_data['ID'];
unset( $post_data['ID'] );
$post_data['post_type'] = LP_QUESTION_CPT;
$new_question_id = wp_insert_post( $post_data );
if ( $new_question_id ) {
$wpdb->insert(
$wpdb->prefix . 'learnpress_quiz_questions',
array(
'quiz_id' => $new_quiz_id,
'question_id' => $new_question_id,
'question_order' => ++ $order
),
array( '%d', '%d', '%d' )
);
$this->_create_question_meta( $old_question_id, $new_question_id );
$this->_update_question_tag( $old_question_id, $new_question_id );
$new_questions[ $old_question_id ] = $new_question_id;
self::$questions_map[ $old_question_id ] = $new_question_id;
}
}
return $new_questions;
}
private function _create_question( $old_id ) {
}
private function _create_question_meta( $old_id, $new_id ) {
$keys = array(
'_lpr_question' => null,
'_lpr_question_mark' => '_lp_mark',
'_lpr_duration' => null
);
$question_meta = self::get_post_meta( $old_id, array_keys( $keys ) );
if ( $question_meta ) {
foreach ( $question_meta as $meta ) {
if ( ! $keys[ $meta['meta_key'] ] ) {
continue;
}
$new_key = $keys[ $meta['meta_key'] ];
$new_value = $meta['meta_value'];
add_post_meta( $new_id, $new_key, $new_value );
}
}
$meta = get_post_meta( $old_id, '_lpr_question', true );
if ( $meta ) {
global $wpdb;
if ( ! empty( $meta['type'] ) ) {
add_post_meta( $new_id, '_lp_type', $meta['type'] );
}
if ( ! empty( $meta['answer'] ) ) {
if ( in_array( $meta['type'], array(
'true_or_false',
'single_choice',
'multi_choice',
'sorting_choice'
) ) ) {
$ordering = 0;
foreach ( $meta['answer'] as $order => $answer ) {
$question_data = array(
'text' => $answer['text'],
'value' => $ordering,
'is_true' => $this->_is_false_value( $answer['is_true'] ) ? 'no' : 'yes'
);
if ( $meta['type'] == 'sorting_choice' ) {
unset( $question_data['is_true'] );
}
$wpdb->insert(
$wpdb->prefix . 'learnpress_question_answers',
array(
'question_id' => $new_id,
'answer_data' => serialize( $question_data ),
'answer_order' => ++ $ordering
),
array( '%d', '%s', '%d' )
);
}
}
}
if ( $meta['type'] == 'fill_in_blank' ) {
$wpdb->insert(
$wpdb->prefix . 'learnpress_question_answers',
array(
'question_id' => $new_id,
'answer_data' => maybe_serialize( array( 'passage' => ! empty( $meta['passage'] ) ? $meta['passage'] : '' ) ),
'answer_order' => 0
),
array( '%d', '%s', '%d' )
);
}
}
/**
* Update other meta data
*/
$this->update_post_metas(
$old_id,
$new_id,
array_keys( $keys )
);
$this->_mark_upgraded( $old_id, $new_id );
}
/**
* @param $old_id
* @param $new_id
*/
private function _update_question_tag( $old_id, $new_id ) {
$tags = array();
if ( $terms = wp_get_object_terms( $old_id, array( 'question_tag', 'question-tag' ) ) ) {
foreach ( $terms as $term ) {
if ( $term->taxonomy == 'question-tag' ) {
$_term = term_exists( $term->name, 'question_tag' );
if ( $_term === 0 || $_term === null ) {
$_term = wp_insert_term(
$term->name, // the term
'question_tag', // the taxonomy
array(
'description' => $term->description,
'slug' => $term->slug,
'parent' => $term->parent
)
);
} else {
}
if ( ! is_wp_error( $_term ) ) {
$tags[] = absint( $_term['term_id'] );
}
} else {
$tags[] = absint( $term->term_id );
}
}
}
if ( $tags ) {
wp_set_object_terms( $new_id, $tags, 'question_tag' );
}
}
private function _upgrade_course( $old_course ) {
$course_args = (array) $old_course;
$course_args['post_type'] = 'lp_course';
unset( $course_args['ID'] );
$new_course_id = wp_insert_post( $course_args );
$section_items = false;
if ( $new_course_id ) {
$section_items = $this->_create_curriculum( $old_course->ID, $new_course_id );
$this->_create_course_meta( $old_course->ID, $new_course_id );
$this->_update_course_category( $old_course->ID, $new_course_id );
$this->_update_course_tag( $old_course->ID, $new_course_id );
$this->_update_course_thumbnail( $old_course->ID, $new_course_id );
$this->_update_course_comments( $old_course->ID, $new_course_id );
}
return array( 'id' => $new_course_id, 'section_items' => $section_items );
}
private function _update_course_comments( $old_id, $new_id, $parent_id = 0 ) {
global $wpdb;
$query = $wpdb->prepare( "
SELECT c.*
FROM {$wpdb->comments} c
INNER JOIN {$wpdb->posts} p ON p.ID = c.comment_post_ID
WHERE p.ID = %d
AND p.post_type = %s
", $old_id, 'lpr_course' );
if ( $comments = $wpdb->get_results( $query ) ) {
foreach ( $comments as $c ) {
$wpdb->update(
$wpdb->comments,
array( 'comment_post_ID' => $new_id ),
array( 'comment_ID' => $c->comment_ID ),
array( '%d' )
);
update_comment_meta( $c->comment_ID, '_lpr_old_course', $old_id );
}
}
}
/**
* @param $old_id
* @param $new_id
*/
private function _update_course_category( $old_id, $new_id ) {
$categories = array();
if ( $terms = wp_get_object_terms( $old_id, 'course_category' ) ) {
foreach ( $terms as $term ) {
$categories[] = $term->term_id;
}
}
if ( $categories ) {
wp_set_object_terms( $new_id, $categories, 'course_category' );
}
}
/**
* @param $old_id
* @param $new_id
*/
private function _update_course_tag( $old_id, $new_id ) {
$tags = array();
if ( $terms = wp_get_object_terms( $old_id, 'course_tag' ) ) {
foreach ( $terms as $term ) {
$tags[] = $term->term_id;
}
}
if ( $tags ) {
wp_set_object_terms( $new_id, $tags, 'course_tag' );
}
}
/**
* @param $old_id
* @param $new_id
*/
private function _update_course_thumbnail( $old_id, $new_id ) {
if ( $post_thumbnail_id = get_post_thumbnail_id( $old_id ) ) {
set_post_thumbnail( $new_id, $post_thumbnail_id );
}
}
private function _upgrade_courses( $force = false ) {
global $wpdb;
$query = $wpdb->prepare( "
SELECT DISTINCT p.*, pm.meta_value as upgraded
FROM {$wpdb->posts} p
LEFT JOIN {$wpdb->postmeta} pm ON pm.post_id = p.ID AND pm.meta_key = %s
WHERE post_type = %s
" . ( ! $force ? "HAVING upgraded IS NULL" : "" ) . "
", '_learn_press_upgraded', 'lpr_course' );
$new_courses = array();
if ( $old_courses = $wpdb->get_results( $query ) ) {
foreach ( $old_courses as $old_course ) {
$return = $this->_upgrade_course( $old_course );
$new_courses[ $old_course->ID ] = $return;
if ( $return['id'] ) {
$this->_mark_upgraded( $old_course->ID, $return['id'] );
}
}
}
self::$courses_map = $new_courses;
$posts = array();
foreach ( $new_courses as $c ) {
$posts[] = $c['id'];
if ( $c['section_items'] ) {
foreach ( $c['section_items'] as $si ) {
$posts[] = $si['id'];
if ( ! empty( $si['questions'] ) ) {
$posts = array_merge( $posts, $si['questions'] );
}
}
}
}
// $this->_remove_unused_data();
}
private function _remove_unused_data() {
global $wpdb;
$query = $wpdb->prepare( "
DELETE FROM {$wpdb->postmeta}
USING {$wpdb->posts} INNER JOIN {$wpdb->postmeta} ON {$wpdb->posts}.ID={$wpdb->postmeta}.post_id
WHERE
{$wpdb->postmeta}.meta_key LIKE %s
AND {$wpdb->posts}.post_type LIKE %s", '\_lpr\_%', 'lp\_%' );
$wpdb->query( $query );
}
public function get_posts_by_ids( $ids, $types = array() ) {
global $wpdb;
settype( $ids, 'array' );
$query = "SELECT * FROM {$wpdb->posts} WHERE ID IN(" . join( ',', $ids ) . ")";
if ( $types ) {
settype( $types, 'array' );
$query .= " AND post_type IN('" . join( "','", $types ) . "')";
}
$posts = array();
if ( $rows = $wpdb->get_results( $query, OBJECT_K ) ) {
foreach ( $ids as $id ) {
if ( ! empty( $rows[ $id ] ) ) {
$posts[ $id ] = (array) $rows[ $id ];
}
}
}
return $posts;
}
public function get_post_meta( $post_id, $keys ) {
global $wpdb;
$query = $wpdb->prepare( "
SELECT pm.*
FROM {$wpdb->postmeta} pm
INNER JOIN {$wpdb->posts} p ON p.ID = pm.post_id
WHERE pm.meta_key in ('" . join( "','", $keys ) . "')
AND pm.post_id = %d
", absint( $post_id ) );
$metas = (array) $wpdb->get_results( $query, ARRAY_A );
return $metas;
}
public function update_post_metas( $old_id, $new_id, $exclude = null ) {
global $wpdb;
$query = $wpdb->prepare( "
INSERT INTO {$wpdb->postmeta}(post_id, meta_key, meta_value)
SELECT %d as post_id, pm.meta_key, pm.meta_value
FROM {$wpdb->postmeta} pm
INNER JOIN {$wpdb->posts} p ON p.ID = pm.post_id
WHERE 1
" . ( is_array( $exclude ) ? "AND pm.meta_key NOT IN('" . join( "','", $exclude ) . "')" : "" ) . "
AND pm.post_id = %d
", $new_id, $old_id );
$wpdb->query( $query );
}
private function rollback_database() {
global $wpdb;
$query = "
SELECT ID
FROM {$wpdb->posts}
WHERE post_type IN('lp_course', 'lp_lesson', 'lp_quiz', 'lp_question', 'lp_order' )
";
if ( $ids = $wpdb->get_col( $query ) ) {
$wpdb->query( "DELETE FROM {$wpdb->postmeta} WHERE post_id IN(" . join( ",", $ids ) . ")" );
$wpdb->query( "DELETE FROM {$wpdb->posts} WHERE ID IN(" . join( ",", $ids ) . ")" );
$table = $wpdb->prefix . 'learnpress_sections';
if ( $wpdb->get_var( "SHOW TABLES LIKE '{$table}'" ) === $table ) {
$wpdb->query( "DELETE FROM {$wpdb->learnpress_sections}" );
}
$table = $wpdb->prefix . 'learnpress_section_items';
if ( $wpdb->get_var( "SHOW TABLES LIKE '{$table}'" ) === $table ) {
$wpdb->query( "DELETE FROM {$wpdb->learnpress_section_items}" );
}
$table = $wpdb->prefix . 'learnpress_quiz_history';
if ( $wpdb->get_var( "SHOW TABLES LIKE '{$table}'" ) === $table ) {
$wpdb->query( "DELETE FROM {$wpdb->learnpress_quiz_history}" );
}
$table = $wpdb->prefix . 'learnpress_user_course';
if ( $wpdb->get_var( "SHOW TABLES LIKE '{$table}'" ) === $table ) {
$wpdb->query( "DELETE FROM {$wpdb->learnpress_user_course}" );
}
}
delete_option( 'learnpress_db_version' );
die();
}
private function _upgrade_orders() {
global $wpdb;
$query = $wpdb->prepare( "
SELECT p.*, u.ID as user_id
FROM {$wpdb->posts} p
INNER JOIN {$wpdb->usermeta} um ON um.meta_value = p.ID AND um.meta_key = %s
INNER JOIN {$wpdb->users} u ON u.ID = um.user_id
", '_lpr_order_id' );
$orders = $wpdb->get_results( $query );
if ( ! $orders ) {
return;
}
foreach ( $orders as $order ) {
$order_data = (array) $order;
$order_data['post_type'] = LP_ORDER_CPT;
unset( $order_data['ID'] );
$old_order_id = $order->ID;
if ( $new_order_id = wp_insert_post( $order_data ) ) {
$this->_create_order_meta( $old_order_id, $new_order_id );
}
self::$orders_map[ $old_order_id ] = $new_order_id;
}
}
private function _create_order_meta( $old_id, $new_id ) {
global $wpdb;
$keys = array(
'_learn_press_transaction_method' => '_payment_method',
'_learn_press_customer_id' => '_user_id',
'_learn_press_customer_ip' => '_user_ip_address',
'_learn_press_order_items' => null,
'_learn_press_transaction_method_id' => '_transaction_id'
);
$order_meta = self::get_post_meta( $old_id, array_keys( $keys ) );
if ( $order_meta ) {
foreach ( $order_meta as $meta ) {
if ( '_learn_press_order_items' == $meta['meta_key'] ) {
$order_data = LP_Helper::maybe_unserialize( $meta['meta_value'] );
if ( isset( $order_data->total ) ) {
add_post_meta( $new_id, '_order_total', $order_data->total );
} else {
add_post_meta( $new_id, '_order_total', 0 );
}
if ( isset( $order_data->sub_total ) ) {
add_post_meta( $new_id, '_order_subtotal', $order_data->sub_total );
} else {
add_post_meta( $new_id, '_order_subtotal', 0 );
}
if ( isset( $order_data->currency ) ) {
add_post_meta( $new_id, '_order_currency', $order_data->currency );
} else {
add_post_meta( $new_id, '', 'USD' );
}
if ( isset( $order_data->products ) ) {
foreach ( $order_data->products as $order_item ) {
$old_course_id = $order_item['id'];
$new_course_id = isset( self::$courses_map[ $old_course_id ] ) ? self::$courses_map[ $old_course_id ]['id'] : 0;
if ( $new_course_id ) {
$new_course = get_post( $new_course_id );
$r = $wpdb->insert(
$wpdb->prefix . 'learnpress_order_items',
array(
'order_item_name' => isset( $order_item['product_name'] ) ? $order_item['product_name'] : $new_course->post_title,
'order_id' => $new_id
)
);
$order_item_id = $wpdb->insert_id;
learn_press_add_order_item_meta( $order_item_id, '_course_id', $new_course->ID );
learn_press_add_order_item_meta( $order_item_id, '_quantity', $order_item['quantity'] );
learn_press_add_order_item_meta( $order_item_id, '_subtotal', $order_item['product_subtotal'] );
learn_press_add_order_item_meta( $order_item_id, '_total', $order_item['product_subtotal'] );
}
if ( empty( self::$course_order_map[ $old_course_id ] ) ) {
self::$course_order_map[ $old_course_id ] = array();
}
self::$course_order_map[ $old_course_id ][] = $old_id;
}
}
add_post_meta( $new_id, '_prices_include_tax', 'no' );
add_post_meta( $new_id, '_user_agent', '' );
add_post_meta( $new_id, '_order_key', '' );
add_post_meta( $new_id, '_transaction_fee', '0' );
continue;
}
$new_key = $keys[ $meta['meta_key'] ];
$new_value = $meta['meta_value'];
if ( '_payment_method' == $new_key ) {
$method_title = preg_replace( '!-!', ' ', $new_value );
$method_title = ucwords( $method_title );
add_post_meta( $new_id, '_payment_method_title', $method_title );
}
add_post_meta( $new_id, $new_key, $new_value );
}
}
/**
* Update other meta data
*/
$this->update_post_metas(
$old_id,
$new_id,
array_keys( $keys )
);
$this->_mark_upgraded( $old_id, $new_id );
}
private function _upgrade_order_courses() {
global $wpdb;
$user_meta_keys = array(
'_lpr_user_course',
'_lpr_course_time',
'_lpr_quiz_start_time',
'_lpr_quiz_questions',
'_lpr_quiz_current_question',
'_lpr_quiz_question_answer',
'_lpr_quiz_completed',
'_lpr_lesson_completed'
);
$fields = array();
$join = array();
$having = array();
$index = 2;
foreach ( $user_meta_keys as $key ) {
$new_key = preg_replace( '!_lpr_!', '', $key );
$fields[] = sprintf( "T{$index}.meta_value AS %s", $new_key );
$join[] = $wpdb->prepare( "LEFT JOIN {$wpdb->usermeta} T{$index} ON T{$index}.user_id = T1.user_id AND T{$index}.meta_key = %s", $key );
$having[] = $new_key . ' IS NOT NULL';
$index ++;
}
$query = sprintf( "
SELECT distinct T1.user_id,
%s
FROM {$wpdb->usermeta} AS T1
%s
HAVING (
%s
)", join( ",\n", $fields ), join( "\n", $join ), join( "\nOR ", $having ) );
$user_meta_rows = $wpdb->get_results( $query );
if ( ! $user_meta_rows ) {
return;
}
foreach ( $user_meta_rows as $user_meta ) {
$user_meta = $this->_parse_user_meta( $user_meta );
$new_course_id = 0;
$user_course_items = array();
$user_parent_items = array();
if ( ! empty( $user_meta->user_course ) && ! empty( $user_meta->course_time ) ) {
$user_meta->user_course = array_unique( $user_meta->user_course );
foreach ( $user_meta->user_course as $course_id ) {
if ( ! empty( self::$courses_map[ $course_id ] ) && ! empty( $user_meta->course_time[ $course_id ] ) ) {
$new_course_id = self::$courses_map[ $course_id ]['id'];
$course_time = $user_meta->course_time[ $course_id ];
$course_end_time = ! empty( $course_time['end'] ) ? $course_time['end'] : '';
if ( ! empty( self::$course_order_map[ $course_id ] ) ) {
$course_order = reset( self::$course_order_map[ $course_id ] );
} else {
$course_order = 0;
}
$user = learn_press_get_user( $user_meta->user_id );
$user_item_id = learn_press_update_user_item_field( array(
'user_id' => $user_meta->user_id,
'status' => $course_end_time ? 'completed' : 'started',
'start_time' => isset( $course_time['start'] ) ? date( 'Y-m-d H:i:s', $course_time['start'] ) : '0000-00-00 00:00:00',
'end_time' => $course_end_time ? date( 'Y-m-d H:i:s', $course_end_time ) : '0000-00-00 00:00:00',
'item_id' => $new_course_id,
'item_type' => LP_COURSE_CPT,
'ref_id' => $course_order,
'ref_type' => LP_ORDER_CPT,
'parent_id' => 0
) );
$user_course_items[ $course_id ] = $user_item_id;
if ( ! empty( self::$courses_map[ $course_id ]['section_items'] ) ) {
foreach ( self::$courses_map[ $course_id ]['section_items'] as $old_item_id => $new ) {
$user_parent_items[ $old_item_id ] = $course_id;
}
}
}
}
}
$user_lesson_items = array();
if ( ! empty( $user_meta->lesson_completed ) ) {
foreach ( $user_meta->lesson_completed as $old_course_id => $_lessons ) {
$lesson_start_time = null;
$lesson_end_time = null;
if ( ! empty( $user_meta->course_time ) && ! empty( $user_meta->course_time[ $old_course_id ] ) ) {
$lesson_start_time = ! empty( $user_meta->course_time[ $old_course_id ]['start'] ) ? $user_meta->course_time[ $old_course_id ]['start'] : '';
$lesson_end_time = ! empty( $user_meta->course_time[ $old_course_id ]['end'] ) ? $user_meta->course_time[ $old_course_id ]['end'] : '';
}
if ( ! empty( self::$courses_map[ $old_course_id ] ) ) {
$new_course_id = self::$courses_map[ $old_course_id ]['id'];
}
if ( $_lessons ) {
foreach ( $_lessons as $old_lesson_id ) {
$item_id = ! empty( self::$lessons_map[ $old_lesson_id ] ) ? self::$lessons_map[ $old_lesson_id ] : '';
$user_item_id = learn_press_update_user_item_field( array(
'status' => $lesson_end_time ? 'completed' : 'started',
'start_time' => $lesson_start_time ? date( 'Y-m-d H:i:s', $lesson_start_time ) : '0000-00-00 00:00:00',
'end_time' => $lesson_end_time ? date( 'Y-m-d H:i:s', $lesson_end_time ) : '0000-00-00 00:00:00',
'item_id' => ! empty( self::$lessons_map[ $old_lesson_id ] ) ? self::$lessons_map[ $old_lesson_id ] : '',
'user_id' => $user_meta->user_id,
'item_type' => LP_LESSON_CPT,
'ref_id' => $new_course_id,
'ref_type' => LP_COURSE_CPT,
'parent_id' => isset( $user_course_items[ $old_course_id ] ) ? $user_course_items[ $old_course_id ] : 0
) );
$user_lesson_items[ $old_lesson_id ] = $user_item_id;
}
}
}
}
if ( ! empty( $user_meta->quiz_start_time ) ) {
foreach ( $user_meta->quiz_start_time as $old_quiz_id => $time ) {
if ( empty( self::$quizzes_map[ $old_quiz_id ] ) ) {
continue;
}
if ( ! isset( $user_parent_items[ $old_quiz_id ] ) ) {
}
$item_id = ! empty( self::$quizzes_map[ $old_quiz_id ] ) ? self::$quizzes_map[ $old_quiz_id ] : '';
$old_course_id = ! empty( $user_parent_items[ $old_quiz_id ] ) ? $user_parent_items[ $old_quiz_id ] : 0;
$new_course_id = ! empty( self::$courses_map[ $old_course_id ] ) ? self::$courses_map[ $old_course_id ]['id'] : 0;
$user_quiz_id = learn_press_update_user_item_field( array(
'status' => ! empty( $user_meta->quiz_completed[ $old_quiz_id ] ) ? 'completed' : 'started',
'start_time' => date( 'Y-m-d H:i:s', $time ),
'end_time' => ! empty( $user_meta->quiz_completed[ $old_quiz_id ] ) ? date( 'Y-m-d H:i:s', $user_meta->quiz_completed[ $old_quiz_id ] ) : '0000-00-00 00:00:00',
'user_id' => $user_meta->user_id,
'item_id' => $item_id,
'item_type' => LP_QUIZ_CPT,
'ref_id' => $new_course_id,
'ref_type' => LP_COURSE_CPT,
'parent_id' => isset( $user_course_items[ $old_course_id ] ) ? $user_course_items[ $old_course_id ] : 0
) );
if ( ! empty( $user_meta->quiz_current_question ) ) {
if ( ! empty( $user_meta->quiz_current_question[ $old_quiz_id ] ) ) {
learn_press_update_user_item_meta( $user_quiz_id, 'current_question', self::$questions_map[ $user_meta->quiz_current_question[ $old_quiz_id ] ] );
}
}
if ( ! empty( $user_meta->quiz_question_answer ) ) {
if ( ! empty( $user_meta->quiz_question_answer[ $old_quiz_id ] ) ) {
$question_answers = array();
foreach ( $user_meta->quiz_question_answer[ $old_quiz_id ] as $old_question_id => $answer ) {
if ( ! empty( self::$questions_map[ $old_question_id ] ) ) {
$question_answers[ self::$questions_map[ $old_question_id ] ] = $answer;
}
}
learn_press_update_user_item_meta( $user_quiz_id, 'question_answers', $question_answers );
}
}
if ( ! empty( $user_meta->quiz_questions ) ) {
if ( ! empty( $user_meta->quiz_questions[ $old_quiz_id ] ) ) {
$quiz_questions = array();
foreach ( $user_meta->quiz_questions[ $old_quiz_id ] as $old_question_id ) {
if ( ! empty( self::$questions_map[ $old_question_id ] ) ) {
$quiz_questions[] = self::$questions_map[ $old_question_id ];
}
}
learn_press_update_user_item_meta( $user_quiz_id, 'question_answers', $quiz_questions );
}
}
}
}
}
}
private function _get_course_order_by_user( $user, $course ) {
global $wpdb;
$query = "
";
}
private function _parse_user_meta( $meta ) {
$origin_type = gettype( $meta );
$meta = (array) $meta;
foreach ( $meta as $k => $v ) {
$meta[ $k ] = LP_Helper::maybe_unserialize( $v );
}
settype( $meta, $origin_type );
return $meta;
}
private function _upgrade_user_roles() {
global $wpdb;
$query = $wpdb->prepare( "
SELECT um.*
FROM {$wpdb->users} u
INNER JOIN {$wpdb->usermeta} um ON um.user_id = u.ID AND um.meta_key = %s
WHERE um.meta_value LIKE %s
", 'wp_capabilities', '%"lpr\_teacher"%' );
if ( $rows = $wpdb->get_results( $query ) ) {
foreach ( $rows as $row ) {
$user = new WP_User( $row->user_id );
$user->remove_role( 'lpr_teacher' );
$user->add_role( 'lp_teacher' );
}
}
remove_role( 'lpr_teacher' );
}
private function _update_user_lessons() {
}
/**
* Register old taxonomy so we can use wp_get_object_terms on old post types
*/
private function _backward_compatible() {
register_taxonomy( 'lesson-tag', array( 'lpr_lesson', LP_LESSON_CPT ),
array(
'labels' => array(
'name' => __( 'Tag', 'learnpress' ),
'menu_name' => __( 'Tag', 'learnpress' ),
'singular_name' => __( 'Tag', 'learnpress' ),
'add_new_item' => __( 'Add New Tag', 'learnpress' ),
'all_items' => __( 'All Tags', 'learnpress' )
),
'public' => true,
'hierarchical' => false,
'show_ui' => true,
'show_admin_column' => 'true',
'show_in_nav_menus' => true,
'rewrite' => array(
'slug' => _x( 'lesson-tag', 'Permalink Slug', 'learnpress' ),
'hierarchical' => true,
'with_front' => false
),
)
);
register_taxonomy( 'question-tag', array( 'lpr_question', LP_QUESTION_CPT ),
array(
'labels' => array(
'name' => __( 'Question Tag', 'learnpress' ),
'menu_name' => __( 'Tag', 'learnpress' ),
'singular_name' => __( 'Tag', 'learnpress' ),
'add_new_item' => __( 'Add New Tag', 'learnpress' ),
'all_items' => __( 'All Tags', 'learnpress' )
),
'public' => true,
'hierarchical' => false,
'show_ui' => true,
'show_admin_column' => 'true',
'show_in_nav_menus' => true,
'rewrite' => array(
'slug' => _x( 'question-tag', 'Permalink Slug', 'learnpress' ),
'hierarchical' => false,
'with_front' => false
),
)
);
add_post_type_support( 'lpr_lesson', 'post-formats' );
}
// Update settings
public function upgrade_settings() {
// update general settings
if ( $_lpr_settings_general = get_option( '_lpr_settings_general' ) ) {
$options = explode( ' ', 'currency currency_pos thousands_separator decimals_separator number_of_decimals instructor_registration' );
foreach ( $options as $o ) {
if ( array_key_exists( $o, $_lpr_settings_general ) ) {
add_option( 'learn_press_' . $o, $_lpr_settings_general[ $o ] );
}
}
}
// update payments settings
if ( $payments = get_option( '_lpr_settings_payment' ) ) {
foreach ( $payments as $payment => $options ) {
if ( $payment == 'paypal' ) {
if ( ! empty( $options['enable'] ) && $options['enable'] == 'on' ) {
add_option( 'learn_press_paypal_enable', 'yes' );
} else {
add_option( 'learn_press_paypal_enable', 'no' );
}
add_option( 'learn_press_paypal_email', ! empty( $options['paypal_email'] ) ? $options['paypal_email'] : '' );
add_option( 'learn_press_paypal_sandbox_email', ! empty( $options['paypal_sandbox_email'] ) ? $options['paypal_sandbox_email'] : '' );
add_option( 'learn_press_paypal_sandbox', ! empty( $options['sandbox'] ) ? 'yes' : 'no' );
}
}
}
// update emails
if ( $_lpr_settings_emails = get_option( '_lpr_settings_emails' ) ) {
$emails = array(
'published_course' => array(
'learn_press_emails_published_course',
'published-course'
),
'enrolled_course' => array(
'learn_press_emails_enrolled_course',
'enrolled-course'
),
'passed_course' => array(
'learn_press_emails_finished_course',
'finished-course'
)
);
foreach ( $_lpr_settings_emails as $email_type => $email ) {
if ( in_array( $email_type, array( 'published_course', 'enrolled_course', 'passed_course' ) ) ) {
$new_email = wp_parse_args(
get_option( $emails[ $email_type ][0] ),
array(
'enable' => '',
'subject' => '',
'messages' => '',
'email_format' => ''
)
);
$new_email['enable'] = ! empty( $email['enable'] ) ? 'yes' : 'no';
$new_email['subject'] = ! empty( $email['subject'] ) ? $email['subject'] : $new_email['subject'];
if ( ! empty( $email['message'] ) ) {
$templates = array( 'learnpress' );
if ( get_template() == 'eduma' ) {
$templates[] = 'learnpress-v1';
}
foreach ( $templates as $_template ) {
if ( $new_email['email_format'] == 'html' ) {
$template_path = get_template_directory() . '/' . $_template . '/emails/';
} else {
$template_path = get_template_directory() . '/' . $_template . '/emails/plain/';
}
if ( wp_mkdir_p( $template_path ) && ! file_exists( $template_path . $emails[ $email_type ][1] . '.php' ) ) {
if ( $file_handle = @fopen( $template_path . $emails[ $email_type ][1] . '.php', 'w' ) ) {
fwrite( $file_handle, $email['message'] );
fclose( $file_handle );
}
}
}
}
add_option( $emails[ $email_type ][0], $new_email );
} elseif ( $email_type == 'general' ) {
$new_email = wp_parse_args(
get_option( 'learn_press_emails_general' ),
array(
'from_name' => '',
'from_email' => ''
)
);
$new_email['from_name'] = ! empty( $email['from_name'] ) ? $email['from_name'] : $new_email['from_name'];
$new_email['from_email'] = ! empty( $email['from_email'] ) ? $email['from_email'] : $new_email['from_email'];
add_option( 'learn_press_emails_general', $new_email );
}
}
}
}
private function _mark_upgraded( $old, $new ) {
update_post_meta( $old, '_learn_press_upgraded', $new );
update_post_meta( $new, '_learn_press_upgraded_from', $old );
}
public function upgrade_database() {
LP_Install::update();
}
public function do_upgrade() {
global $wpdb;
set_time_limit( 0 );
// start a transaction so we can rollback all as begin if there is an error
$wpdb->query( "START TRANSACTION;" );
$force = learn_press_get_request( 'force' ) == 'true';
try {
$this->_backward_compatible();
// update courses
$this->_upgrade_courses( $force );
// update unassigned items
$this->_upgrade_unassigned_items( $force );
// update unassigned questions
$this->_upgrade_unassigned_questions( $force );
// update orders
$this->_upgrade_orders();
// orders
$this->_upgrade_order_courses();
// user roles
$this->_upgrade_user_roles();
// settings
$this->upgrade_settings();
// update database
$this->upgrade_database();
}
catch ( Exception $ex ) {
$wpdb->query( "ROLLBACK;" );
wp_die( $ex->getMessage() );
}
$wpdb->query( "COMMIT;" );
update_option( 'learnpress_version', LP()->version );
update_option( 'learnpress_db_version', LP()->version );
update_option( '_learn_press_flush_rewrite_rules', 'yes' );
// cui bap
update_option( 'permalink_structure', '/%postname%/' );
delete_transient( 'learn_press_is_old_version' );
learn_press_update_log( '1.0.x', array( 'time' => time() ) );
return true;
}
/**
* Display update page content
*/
public function learn_press_upgrade_10_page() {
if ( empty( $_REQUEST['page'] ) || $_REQUEST['page'] != 'learn_press_upgrade_from_09' ) {
return;
}
if ( empty( $_REQUEST['_wpnonce'] ) || ! wp_verify_nonce( $_REQUEST['_wpnonce'], 'learn-press-upgrade-09' ) ) {
wp_redirect( admin_url() );
exit();
}
if ( ! empty( $_POST['action'] ) && $_POST['action'] == 'upgrade' ) {
if ( $this->do_upgrade() ) {
$_REQUEST['step'] = 'upgraded';
}
}
wp_enqueue_style( 'learn-press-upgrade-x', LP()->plugin_url( 'inc/updates/09/style.css' ), array(
'dashicons',
'install'
) );
wp_enqueue_script( 'learn-press-upgrade-x', LP()->plugin_url( 'inc/updates/09/script.js' ), array( 'jquery' ) );
add_action( 'learn_press_update_step_welcome', array( $this, 'update_welcome' ) );
add_action( 'learn_press_update_step_upgraded', array( $this, 'update_upgraded' ) );
$step = ! empty( $_REQUEST['step'] ) ? $_REQUEST['step'] : 'welcome';
if ( ! in_array( $step, $this->_steps ) ) {
$step = reset( $this->_steps );
}
$this->_current_step = $step;
$view = learn_press_get_admin_view( 'updates/0.9/update-wizard.php' );
include_once $view;
exit();
}
/**
* Add menu to make it work properly
*/
public function learn_press_update_10_menu() {
add_dashboard_page( '', '', 'manage_options', 'learn_press_upgrade_from_09', '' );
}
/**
* Welcome step page
*/
public function update_welcome() {
$view = learn_press_get_admin_view( 'updates/0.9/step-welcome.php' );
include $view;
}
public function update_upgraded() {
$view = learn_press_get_admin_view( 'updates/0.9/step-upgraded.php' );
include $view;
}
/**
* Repair Database step page
*/
public function update_repair_database() {
$view = learn_press_get_admin_view( 'updates/0.9/step-repair-database.php' );
include $view;
}
public function next_link() {
if ( $this->_current_step ) {
if ( ( $pos = array_search( $this->_current_step, $this->_steps ) ) !== false ) {
if ( $pos < sizeof( $this->_steps ) - 1 ) {
$pos ++;
return admin_url( 'admin.php?page=learn_press_upgrade_from_09&step=' . $this->_steps[ $pos ] );
}
}
}
return false;
}
public function prev_link() {
if ( $this->_current_step ) {
if ( ( $pos = array_search( $this->_current_step, $this->_steps ) ) !== false ) {
if ( $pos > 0 ) {
$pos --;
return admin_url( 'admin.php?page=learn_press_upgrade_from_09&step=' . $this->_steps[ $pos ] );
}
}
}
return false;
}
}
new LP_Upgrade_From_09();
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