File: /home/wwwprimemarka/public_html/wp-content/themes/Zephyr/framework/functions/migration.php
<?php defined( 'ABSPATH' ) OR die( 'This script cannot be accessed directly.' );
class US_Migration {
/**
* @var US_Migration
*/
protected static $instance;
protected $migration_needed_message = '';
protected $migration_completed_message = '';
/**
* Singleton pattern: US_Migration::instance()->do_something()
*
* @return US_Migration
*/
public static function instance() {
if ( ! isset( self::$instance ) ) {
self::$instance = new US_Migration;
}
return self::$instance;
}
/**
* @var array List of migration classes instances $version => $instance
*/
public $translators = array();
protected function __construct() {
global $us_template_directory;
// Get the current DB version
$db_version = $this->get_db_version();
// Get available migrations (should be set by the theme's us_config_migrations filter) and keep only the needed ones
$migrations = array();
foreach ( us_config( 'migrations', array() ) as $migration_version => $migration_file ) {
if ( version_compare( $db_version, $migration_version, '<' ) ) {
$class = basename( $migration_file, '.php' );
if ( file_exists( $us_template_directory . '/' . $migration_file ) ) {
include $us_template_directory . '/' . $migration_file;
} elseif ( WP_DEBUG ) {
wp_die( 'Defined migration file not found: ' . $us_template_directory . '/' . $migration_file );
}
if ( class_exists( $class ) ) {
$this->translators[$migration_version] = new $class;
}
}
}
if ( empty( $this->translators ) ) {
// Set DB version if the theme was just installed
$this->set_db_version();
return;
}
if ( ! is_admin() OR ( defined( 'DOING_AJAX' ) AND DOING_AJAX ) ) {
// Providing fall-back compatibility for the previous website db versions
$this->provide_fallback( $migrations );
} else {
// Admin panel
if ( $this->should_be_manual() ) {
if ( isset( $_GET['us-migration'] ) AND wp_verify_nonce( $_GET['us-migration'], 'us-migration' ) ) {
// Performing the migration
add_action( 'admin_init', array( $this, 'perform_migration' ), 1 );
add_action( 'admin_notices', array( $this, 'display_migration_completed' ), 1 );
} else {
// Notifying about the needed migrations
add_action( 'admin_notices', array( $this, 'display_migration_needed' ), 1 );
}
} else {
// Performing the migration silently
add_action( 'admin_init', array( $this, 'perform_migration' ), 1 );
}
}
}
/**
* Check if the current set of migrations should be manual
*/
protected function should_be_manual() {
$should_be_manual = FALSE;
$migration_needed_message = '';
$migration_completed_message = '';
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'migration_needed_message' ) ) {
$migration_needed_message .= $translator->migration_needed_message();
}
if ( method_exists( $translator, 'migration_completed_message' ) ) {
$migration_completed_message .= $translator->migration_completed_message();
}
$should_be_manual = ( $should_be_manual OR $translator->should_be_manual );
}
$this->migration_needed_message = $migration_needed_message;
$this->migration_completed_message = $migration_completed_message;
return $should_be_manual;
}
/**
* Get the theme's current database version
*
* @return string
*/
public function get_db_version() {
// Getting from global options, not from the theme mods, as it affects content and general options (not theme mods)
$result = get_option( 'us_db_version' );
return $result ? $result : US_THEMEVERSION;
}
/**
* Set the current database version
*
* @param string $version If not set will be updated to the current theme's version
*/
public function set_db_version( $version = NULL ) {
if ( $version === NULL ) {
$version = US_THEMEVERSION;
}
$current_version = get_option( 'us_db_version' );
if ( $current_version != $version ) {
update_option( 'us_db_version', $version, TRUE );
}
}
public function provide_fallback( $migrations ) {
// For both frontend and ajax requests
add_action( 'init', array( $this, 'fallback_theme_options' ), 12 );
add_filter( 'meta', array( $this, 'fallback_meta' ), 10, 4 );
if ( ! is_admin() ) {
// For frontend requests only
add_filter( 'theme_mod_nav_menu_locations', array( $this, 'fallback_menus' ), 5 );
add_filter( 'the_content', array( $this, 'fallback_content' ), 5 );
}
if ( $this->has_widgets_translators() ) {
$this->fallback_widgets();
}
}
/**
* Method that is bound to 'theme_mod_nav_menu_locations' filter to provide live fallback compatibility for menus migrations
*
* @param string $locations
*
* @return mixed
*/
public function fallback_menus( $locations ) {
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'translate_menus' ) ) {
$translator->translate_menus( $locations );
}
}
return $locations;
}
/**
* Method for providing live fallback compatibility for options migrations
*/
public function fallback_theme_options() {
global $usof_options;
usof_load_options_once();
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'translate_theme_options' ) ) {
$translator->translate_theme_options( $usof_options );
}
}
$usof_options = array_merge( usof_defaults(), $usof_options );
$smof_data['generate_css_file'] = FALSE;
}
/**
* Method for providing live fallback compatibility for metas migrations
*
* @param mixed $meta_val
* @param string $key
* @param array $args
* @param int $post_id
*
* @return mixed
*/
public function fallback_meta( $meta_val, $key, $args, $post_id ) {
$meta = get_post_meta( $post_id );
$post_type = get_post_type( $post_id );
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'translate_meta' ) ) {
$translator->translate_meta( $meta, $post_type );
}
}
if ( isset( $meta[$key] ) ) {
if ( ! $args['multiple'] ) {
return $meta[$key][0];
} else {
return $meta[$key];
}
} else {
return $meta_val;
}
}
/**
* Method that is bound to 'the_content' filter to provide live fallback compatibility for content migrations
*
* @param $content
*
* @return mixed
*/
public function fallback_content( $content ) {
global $post;
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'translate_content' ) ) {
$translator->translate_content( $content, $post->ID );
}
}
return $content;
}
public function has_widgets_translators() {
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'translate_widgets' ) ) {
return TRUE;
}
}
return FALSE;
}
public $sidebars_widgets = array();
public $widgets_instances = array();
public function fallback_widgets() {
$this->sidebars_widgets = array();
$this->widgets_instances = array();
$filters_added = array();
foreach ( get_option( 'sidebars_widgets', array() ) as $sidebar => $widgets ) {
if ( ! is_array( $widgets ) ) {
// For non-widgets additional option data
$this->sidebars_widgets[$sidebar] = $widgets;
continue;
}
foreach ( $widgets as $index => $widget_binding ) {
if ( ! preg_match( '@^(.+)\-(\d+)$@', $widget_binding, $matches ) ) {
continue;
}
$widget_name = $original_widget_name = $matches[1];
$instance_id = $matches[2];
$this->widgets_instances[$widget_name] = get_option( 'widget_' . $widget_name, array() );
if ( ! isset( $this->widgets_instances[$widget_name][$instance_id] ) ) {
continue;
}
foreach ( $this->translators as $version => $translator ) {
if ( ! method_exists( $translator, 'translate_widgets' ) ) {
continue;
}
if ( $translator->translate_widgets( $widget_name, $this->widgets_instances[$widget_name][$instance_id] ) ) {
if ( $widget_name != $original_widget_name ) {
if ( ! isset( $this->widgets_instances[$widget_name] ) ) {
// Widget name has changed
$this->widgets_instances[$widget_name] = isset( $this->widgets_instances[$original_widget_name] ) ? $this->widgets_instances[$original_widget_name] : array();
} else {
$this->widgets_instances[$widget_name][$instance_id] = $this->widgets_instances[$original_widget_name][$instance_id];
}
}
if ( ! in_array( $widget_name, $filters_added ) ) {
// Binding each widget once
add_filter(
'pre_option_widget_' . $widget_name, array(
$this,
'fallback_widgets_instance',
)
);
$filters_added[] = $widget_name;
}
}
}
$widgets[$index] = $widget_name . '-' . $instance_id;
}
$this->sidebars_widgets[$sidebar] = $widgets;
}
if ( count( $filters_added ) > 0 ) {
add_filter( 'option_sidebars_widgets', array( $this, 'fallback_sidebars_widgets' ) );
}
}
public function fallback_sidebars_widgets() {
return $this->sidebars_widgets;
}
public function fallback_widgets_instance() {
if ( ! preg_match( '@^pre_option_widget_(.+)$@', current_filter(), $matches ) OR ! isset( $this->widgets_instances[$matches[1]] ) ) {
return FALSE;
}
return $this->widgets_instances[$matches[1]];
}
public function display_migration_needed() {
if ( $this->migration_needed_message != '' ) {
$output = $this->migration_needed_message;
} else {
$output = '<div class="error us-migration">';
$output .= '<h2>Your website data needs to be migrated to be compatible with <strong>' . US_THEMENAME . ' ' . US_THEMEVERSION . '</strong></h2>';
$output .= '<p><strong>Important</strong>: Do not save any changes before the migration, as doing this you may loose some of your website data.';
$output .= '<br>Please <a href="https://help.us-themes.com/' . strtolower( US_THEMENAME ) . '/installation/update20/" target="_blank">read the manual ';
$output .= 'how to migrate the website</a> (or how to rollback to the previous version of the theme, if you don\'t want to migrate) carefully.</p>';
$output .= '<p><label><input type="checkbox" name="allow_migration" id="allow_migration"> I\'ve read the manual, made a full backup and checked the website: everything works fine!</p>';
$output .= '<p><input disabled type="submit" value="Start the Migration" class="button button-large" id="migration-start"></p>';
$output .= '</div>';
$output .= '<script>';
$output .= 'jQuery(function($){
$(".us-migration input.button").attr("disabled", "");
$(".us-migration input[type=\"checkbox\"]").removeAttr("checked").on("click", function(){
if ($(this).is(":checked")){
$(".us-migration input.button").removeAttr("disabled");
}else{
$(".us-migration input.button").attr("disabled", "");
}
});
$(".us-migration input.button").click(function(){
if ( ! $(".us-migration input[type=\"checkbox\"]").is(":checked")) return;
location.assign("' . admin_url( 'admin.php?page=us-home' ) . '&us-migration=' . wp_create_nonce( 'us-migration' ) . '");
});
});';
$output .= '</script>';
}
echo $output;
}
public function display_migration_completed() {
if ( $this->migration_completed_message != '' ) {
$output = $this->migration_completed_message;
} else {
$output = '<div class="updated us-migration">';
$output .= '<p><strong>Congratulations</strong>: Migration to ' . US_THEMENAME . ' ' . US_THEMEVERSION . ' ';
$output .= 'is completed! Now please regenerate thumbnails and check your website once again. If you notice ';
$output .= 'some issues, <a href="https://help.us-themes.com/' . strtolower( US_THEMENAME ) . '/installation/update20/" ';
$output .= 'target="_blank">follow the manual</a>.</p>';
$output .= '</div>';
}
echo $output;
}
/**
* Should be bound to admin_init action, so all the needed stuff is initalized
*/
public function perform_migration() {
$this->migrate_menus();
$this->migrate_theme_options();
$this->migrate_widgets();
$this->migrate_content_and_meta();
$this->set_db_version();
}
public function migrate_menus() {
$locations = get_theme_mod( 'nav_menu_locations' );
$menus_changed = FALSE;
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'translate_menus' ) ) {
$menus_changed = ( $translator->translate_menus( $locations ) OR $menus_changed );
}
}
if ( $menus_changed ) {
set_theme_mod( 'nav_menu_locations', $locations );
}
}
public function migrate_theme_options() {
// Getting Options
global $usof_options;
$updated_options = $usof_options;
usof_load_options_once();
$options_changed = FALSE;
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'translate_theme_options' ) ) {
$options_changed = ( $translator->translate_theme_options( $updated_options ) OR $options_changed );
}
}
if ( $options_changed ) {
// Filling the missed options with default values
$updated_options = array_merge( usof_defaults(), $updated_options );
$updated_options['generate_css_file'] = FALSE;
// Saving the changed options
usof_save_options( $updated_options );
}
}
public function migrate_widgets() {
$sidebars_widgets = array();
$widgets_instances = array();
// Name of changed widgets
$changed_widgets = array();
foreach ( get_option( 'sidebars_widgets', array() ) as $sidebar => $widgets ) {
if ( ! is_array( $widgets ) ) {
// For non-widgets additional option data
$sidebars_widgets[$sidebar] = $widgets;
continue;
}
foreach ( $widgets as $index => $widget_binding ) {
if ( ! preg_match( '@^(.+)\-(\d+)$@', $widget_binding, $matches ) ) {
continue;
}
$widget_name = $original_widget_name = $matches[1];
$instance_id = $matches[2];
$widgets_instances[$widget_name] = get_option( 'widget_' . $widget_name, array() );
if ( ! isset( $widgets_instances[$widget_name][$instance_id] ) ) {
continue;
}
foreach ( $this->translators as $version => $translator ) {
if ( ! method_exists( $translator, 'translate_widgets' ) ) {
continue;
}
if ( $translator->translate_widgets( $widget_name, $widgets_instances[$widget_name][$instance_id] ) ) {
if ( $widget_name != $original_widget_name ) {
if ( ! isset( $widgets_instances[$widget_name] ) ) {
// Widget name has changed
delete_option( 'widget_' . $original_widget_name );
$widgets_instances[$widget_name] = isset( $widgets_instances[$original_widget_name] ) ? $widgets_instances[$original_widget_name] : array();
} else {
$widgets_instances[$widget_name][$instance_id] = $widgets_instances[$original_widget_name][$instance_id];
}
}
if ( ! in_array( $widget_name, $changed_widgets ) ) {
$changed_widgets[] = $widget_name;
}
}
}
$widgets[$index] = $widget_name . '-' . $instance_id;
}
$sidebars_widgets[$sidebar] = $widgets;
}
if ( count( $changed_widgets ) > 0 ) {
update_option( 'sidebars_widgets', $sidebars_widgets );
foreach ( $changed_widgets as $widget_name ) {
update_option( 'widget_' . $widget_name, $widgets_instances[$widget_name], TRUE );
}
}
}
public function migrate_content_and_meta() {
global $vc_manager, $us_migration_current_post_id;
if ( class_exists( 'Vc_Manager' ) AND isset( $vc_manager ) ) {
$vc = $vc_manager->vc();
}
$posts_types = array( 'post', 'page', 'us_portfolio', 'us_footer', 'us_testimonial', 'product' );
// Iterating thru needed post types
foreach ( $posts_types as $post_type ) {
$args = array(
'posts_per_page' => - 1,
'post_type' => $post_type,
'post_status' => 'any',
'numberposts' => - 1,
);
// Fetching posts and iterating them
$posts = get_posts( $args );
foreach ( $posts as $post ) {
$us_migration_current_post_id = $post->ID;
// Translating Meta fields
$meta_changed = FALSE;
$translate_meta_method = 'translate_meta';
$original_meta = $meta = get_post_meta( $post->ID );
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, $translate_meta_method ) ) {
$meta_changed = ( $translator->{$translate_meta_method}( $meta, $post_type ) OR $meta_changed );
}
}
if ( $meta_changed ) {
$deleted_meta = array_diff_key( $original_meta, $meta );
foreach ( $meta as $key => $value ) {
if ( $original_meta[$key] !== $value ) {
update_post_meta( $post->ID, $key, $value[0] );
}
}
foreach ( $deleted_meta as $key => $value ) {
delete_post_meta( $post->ID, $key );
}
}
// Translating shortcodes
$content = $post->post_content;
$content_changed = FALSE;
foreach ( $this->translators as $version => $translator ) {
if ( method_exists( $translator, 'translate_content' ) ) {
$content_changed = ( $translator->translate_content( $content, $post->ID ) OR $content_changed );
}
}
if ( $content_changed ) {
wp_update_post(
array(
'ID' => $post->ID,
'post_content' => $content,
)
);
if ( isset( $vc ) AND method_exists( $vc, 'buildShortcodesCustomCss' ) ) {
$vc->buildShortcodesCustomCss( $post->ID );
}
}
}
}
}
}
abstract class US_Migration_Translator {
/**
* @var bool Possibly dangerous translation that needs to be migrated manually (don't use this too often)
*/
public $should_be_manual = FALSE;
/**
* @var string Extra css that will be appended to the end of the body
*/
public $_extra_css = '';
public function __construct() {
add_action( 'wp_footer', array( $this, 'append_css' ), 20 );
}
public function append_css() {
if ( ! empty( $this->_extra_css ) ) {
echo '<style type="text/css" id="' . get_class( $this ) . '">' . $this->_extra_css . '</style>';
}
}
/**
*
*
* @param array $locations
* @param array $rules
*
* @return bool
*/
protected function _translate_menus( &$locations, $rules ) {
$changed = FALSE;
// Obtaining the valid menu ids
$menu_ids = wp_get_nav_menus( array( 'fields' => 'ids' ) );
foreach ( $rules as $old => $new ) {
if ( isset( $locations[$old] ) AND in_array( $locations[$old], $menu_ids ) ) {
$locations[$new] = $locations[$old];
unset( $locations[$old] );
$changed = TRUE;
}
}
return $changed;
}
protected function _translate_theme_options( &$options, $rules ) {
$changed = FALSE;
foreach ( $rules as $option => $rule ) {
if ( isset( $options[$option] ) ) {
if ( isset( $rule['values'] ) ) {
foreach ( $rule['values'] as $old_value => $new_value ) {
if ( $options[$option] == $old_value ) {
$options[$option] = $new_value;
$changed = TRUE;
break;
}
}
}
if ( isset( $rule['new_name'] ) ) {
if ( ! is_array( $rule['new_name'] ) ) {
$rule['new_name'] = array( $rule['new_name'] );
}
$option_value = $options[$option];
unset( $options[$option] );
foreach ( $rule['new_name'] as $new_name ) {
if ( ! isset( $options[$new_name] ) ) {
$options[$new_name] = $option_value;
}
}
$changed = TRUE;
}
}
}
return $changed;
}
protected function _translate_meta( &$meta, $post_type, $rules ) {
$changed = FALSE;
foreach ( $rules as $meta_name => $rule ) {
if ( isset( $meta[$meta_name] ) AND in_array( $post_type, $rule['post_types'] ) ) {
if ( isset( $rule['values'] ) ) {
foreach ( $rule['values'] as $old_value => $new_value ) {
if ( $meta[$meta_name][0] == $old_value ) {
$changed = TRUE;
$meta[$meta_name][0] = $new_value;
break;
}
}
}
if ( isset( $rule['new_name'] ) ) {
if ( ! is_array( $rule['new_name'] ) ) {
$rule['new_name'] = array( $rule['new_name'] );
}
$meta_value = $meta[$meta_name];
//unset( $meta[$meta_name] );
foreach ( $rule['new_name'] as $new_name ) {
if ( ! isset( $meta[$new_name] ) ) {
$changed = TRUE;
$meta[$new_name] = $meta_value;
}
}
}
}
}
return $changed;
}
public function translate_params( &$params, $rules ) {
$params_changed = FALSE;
foreach ( $rules as $param => $rule ) {
if ( isset( $params[$param] ) ) {
if ( isset( $rule['values'] ) ) {
foreach ( $rule['values'] as $old_value => $new_value ) {
if ( $params[$param] == $old_value ) {
if ( $new_value === NULL ) {
unset( $params[$param] );
} else {
$params[$param] = $new_value;
}
$params_changed = TRUE;
break;
}
}
}
if ( isset( $params[$param] ) AND isset( $rule['new_name'] ) ) {
if ( $rule['new_name'] !== NULL ) {
$params[$rule['new_name']] = $params[$param];
}
unset( $params[$param] );
$params_changed = TRUE;
}
} elseif ( isset( $rule['values'] ) AND isset( $rule['values'][NULL] ) ) {
$params[$param] = $rule['values'][NULL];
}
}
return $params_changed;
}
public function _translate_content( &$content ) {
$content_changed = FALSE;
// Searching for all shortcodes
$shortcode_pattern = $this->get_shortcode_regex();
if ( preg_match_all( '/' . $shortcode_pattern . '/s', $content, $matches ) ) {
if ( count( $matches[2] ) ) {
foreach ( $matches[2] as $i => $shortcode_name ) {
$shortcode_content_changed = $shortcode_changed = FALSE;
$shortcode_string = $matches[0][$i];
$shortcode_params_string = $matches[3][$i];
$shortcode_content = $matches[5][$i];
// Check if params of this shortcode should be translated
$translate_shortcode_method = 'translate_' . $shortcode_name;
if ( method_exists( $this, $translate_shortcode_method ) ) {
if ( ! empty( $shortcode_params_string ) ) {
$shortcode_params = shortcode_parse_atts( $shortcode_params_string );
} else {
$shortcode_params = array();
}
$shortcode_changed = $this->$translate_shortcode_method( $shortcode_name, $shortcode_params, $shortcode_content );
// If params should be changed, remaking params string
if ( $shortcode_changed ) {
$shortcode_params_string = '';
foreach ( $shortcode_params as $param => $value ) {
// TODO: $value may have double quotes? Check this case
$shortcode_params_string .= ' ' . $param . '="' . $value . '"';
}
}
}
// Using recursion to translate shortcodes inside found shortcode
if ( ! empty( $shortcode_content ) ) {
$shortcode_content_changed = $this->translate_content( $shortcode_content );
}
// If it is a text containing pricing - leave just pricing
if ( get_class( $this ) == 'us_migration_2_0' ) {
if ( $shortcode_name == 'vc_column_text' AND preg_match( '/^' . $this->get_shortcode_regex( array( 'us_pricing' ) ) . '$/s', trim( $shortcode_content ) ) ) {
$content = str_replace( $shortcode_string, $shortcode_content, $content );
$content_changed = TRUE;
continue;
}
}
// If content or params of the shortcode have been changed, making new shortcode string and replacing it in the content
if ( $shortcode_content_changed OR $shortcode_changed ) {
$new_shortcode_string = '[' . $shortcode_name . $shortcode_params_string . ']';
if ( ! empty( $shortcode_content ) ) {
$new_shortcode_string .= $shortcode_content;
}
// TODO: Possible spaces before the ending ']'. Regex check?
if ( strpos( $shortcode_string, '[/' . $matches[2][$i] . ']' ) ) {
$new_shortcode_string .= '[/' . $shortcode_name . ']';
}
// Doing str_replace only once to avoid collisions
$pos = strpos( $content, $shortcode_string );
if ( $pos !== FALSE ) {
$content = substr_replace( $content, $new_shortcode_string, $pos, strlen( $shortcode_string ) );
}
$content_changed = TRUE;
}
}
}
}
return $content_changed;
}
public $shortcode_tagnames = NULL;
public function get_shortcode_regex( $tagnames = NULL ) {
if ( empty( $tagnames ) OR ! is_array( $tagnames ) ) {
if ( $this->shortcode_tagnames === NULL ) {
// Retrieving list of possible shortcode translations from the class methods
$this->shortcode_tagnames = array();
foreach ( get_class_methods( $this ) as $method_name ) {
if ( substr( $method_name, 0, 10 ) != 'translate_' ) {
continue;
}
$tagname = substr( $method_name, 10 );
if ( ! in_array( $tagname, explode( '|', 'menus|params|content|theme_options|meta|widgets' ) ) ) {
$this->shortcode_tagnames[] = $tagname;
}
}
}
$tagnames = $this->shortcode_tagnames;
}
$tagregexp = implode( '|', array_map( 'preg_quote', $tagnames ) );
// WARNING! Do not change this regex without changing do_shortcode_tag() and strip_shortcode_tag()
// Also, see shortcode_unautop() and shortcode.js.
$this->shortcode_regex = '\\[' // Opening bracket
. '(\\[?)' // 1: Optional second opening bracket for escaping shortcodes: [[tag]]
. "($tagregexp)" // 2: Shortcode name
. '(?![\\w-])' // Not followed by word character or hyphen
. '(' // 3: Unroll the loop: Inside the opening shortcode tag
. '[^\\]\\/]*' // Not a closing bracket or forward slash
. '(?:' . '\\/(?!\\])' // A forward slash not followed by a closing bracket
. '[^\\]\\/]*' // Not a closing bracket or forward slash
. ')*?' . ')' . '(?:' . '(\\/)' // 4: Self closing tag ...
. '\\]' // ... and closing bracket
. '|' . '\\]' // Closing bracket
. '(?:' . '(' // 5: Unroll the loop: Optionally, anything between the opening and closing shortcode tags
. '[^\\[]*+' // Not an opening bracket
. '(?:' . '\\[(?!\\/\\2\\])' // An opening bracket not followed by the closing shortcode tag
. '[^\\[]*+' // Not an opening bracket
. ')*+' . ')' . '\\[\\/\\2\\]' // Closing shortcode tag
. ')?' . ')' . '(\\]?)'; // 6: Optional second closing brocket for escaping shortcodes: [[tag]]
return $this->shortcode_regex;
}
}
US_Migration::instance();