<?php

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namespace WPForms\Admin\Notifications;

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/**

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* Class EventDriven.

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*

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* @since 1.7.5

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*/

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class EventDriven {

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/**

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* WPForms version when the Event Driven feature has been introduced.

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*

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* @since 1.7.5

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*

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* @var string

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*/

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const FEATURE_INTRODUCED = '1.7.5';

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/**

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* Expected date format for notifications.

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*

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* @since 1.7.5

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*

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* @var string

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*/

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const DATE_FORMAT = 'Y-m-d H:i:s';

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/**

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* Common UTM parameters.

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*

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* @since 1.7.5

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*

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* @var array

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*/

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const UTM_PARAMS = [

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'utm_source' => 'WordPress',

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'utm_medium' => 'Event Notification',

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];

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/**

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* Common targets for date logic.

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*

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* Available items:

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* - upgraded (upgraded to a latest version)

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* - activated

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* - forms_first_created

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* - X.X.X.X (upgraded to a specific version)

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* - pro (activated/installed)

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* - lite (activated/installed)

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*

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* @since 1.7.5

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*

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* @var array

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*/

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const DATE_LOGIC = [ 'upgraded', 'activated', 'forms_first_created' ];

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/**

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* Timestamps.

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*

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* @since 1.7.5

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*

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* @var array

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*/

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private $timestamps = [];

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/**

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* Initialize class.

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*

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* @since 1.7.5

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*/

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public function init() {

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if ( ! $this->allow_load() ) {

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return;

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}

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$this->hooks();

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}

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/**

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* Indicate if this is allowed to load.

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*

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* @since 1.7.5

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*

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* @return bool

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*/

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private function allow_load() {

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return wpforms()->obj( 'notifications' )->has_access() || wp_doing_cron();

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}

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/**

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* Hooks.

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*

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* @since 1.7.5

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*/

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private function hooks() {

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add_filter( 'wpforms_admin_notifications_update_data', [ $this, 'update_events' ] );

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}

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/**

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* Add Event Driven notifications before saving them in database.

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*

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* @since 1.7.5

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*

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* @param array $data Notification data.

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*

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* @return array

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*/

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public function update_events( $data ) {

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$updated = [];

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/**

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* Allow developers to turn on debug mode: store all notifications and then show all of them.

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*

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* @since 1.7.5

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*

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* @param bool $is_debug True if it's a debug mode. Default: false.

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*/

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$is_debug = (bool) apply_filters( 'wpforms_admin_notifications_event_driven_update_events_debug', false );

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$wpforms_notifications = wpforms()->obj( 'notifications' );

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foreach ( $this->get_notifications() as $slug => $notification ) {

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$is_processed = ! empty( $data['events'][ $slug ]['start'] );

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$is_conditional_ok = ! ( isset( $notification['condition'] ) && $notification['condition'] === false );

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// If it's a debug mode OR valid notification has been already processed - skip running logic checks and save it.

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if (

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$is_debug ||

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( $is_processed && $is_conditional_ok && $wpforms_notifications->is_valid( $data['events'][ $slug ] ) )

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) {

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unset( $notification['date_logic'], $notification['offset'], $notification['condition'] );

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// phpcs:ignore WordPress.DateTime.RestrictedFunctions.date_date

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$notification['start'] = $is_debug ? date( self::DATE_FORMAT ) : $data['events'][ $slug ]['start'];

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$updated[ $slug ] = $notification;

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continue;

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}

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// Ignore if a condition is not passed conditional checks.

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if ( ! $is_conditional_ok ) {

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continue;

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}

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$timestamp = $this->get_timestamp_by_date_logic(

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$this->prepare_date_logic( $notification )

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);

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if ( empty( $timestamp ) ) {

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continue;

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}

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// Probably, notification should be visible after some time.

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$offset = empty( $notification['offset'] ) ? 0 : absint( $notification['offset'] );

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// Set a start date when notification will be shown.

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// phpcs:ignore WordPress.DateTime.RestrictedFunctions.date_date

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$notification['start'] = date( self::DATE_FORMAT, $timestamp + $offset );

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// Ignore if notification data is not valid.

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if ( ! $wpforms_notifications->is_valid( $notification ) ) {

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continue;

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}

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// Remove unnecessary values, mark notification as active, and save it.

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unset( $notification['date_logic'], $notification['offset'], $notification['condition'] );

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$updated[ $slug ] = $notification;

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}

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$data['events'] = $updated;

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return $data;

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}

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/**

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* Prepare and retrieve date logic.

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*

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* @since 1.7.5

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*

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* @param array $notification Notification data.

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*

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* @return array

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*/

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private function prepare_date_logic( $notification ) {

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$date_logic = empty( $notification['date_logic'] ) || ! is_array( $notification['date_logic'] ) ? self::DATE_LOGIC : $notification['date_logic'];

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return array_filter( array_filter( $date_logic, 'is_string' ) );

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}

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/**

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* Retrieve a notification timestamp based on date logic.

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*

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* @since 1.7.5

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*

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* @param array $args Date logic.

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*

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* @return int

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*/

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private function get_timestamp_by_date_logic( $args ) {

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foreach ( $args as $target ) {

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if ( ! empty( $this->timestamps[ $target ] ) ) {

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return $this->timestamps[ $target ];

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}

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$timestamp = call_user_func(

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$this->get_timestamp_callback( $target ),

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$target

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);

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if ( ! empty( $timestamp ) ) {

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$this->timestamps[ $target ] = $timestamp;

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return $timestamp;

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}

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}

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return 0;

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}

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/**

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* Retrieve a callback that determines needed timestamp.

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*

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* @since 1.7.5

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*

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* @param string $target Date logic target.

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*

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* @return callable

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*/

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private function get_timestamp_callback( $target ) {

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$raw_target = $target;

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// As $target should be a part of name for callback method,

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// this regular expression allow lowercase characters, numbers, and underscore.

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$target = strtolower( preg_replace( '/[^a-z0-9_]/', '', $target ) );

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// Basic callback.

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$callback = [ $this, 'get_timestamp_' . $target ];

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// Determine if a special version number is passed.

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// Uses the regular expression to check a SemVer string.

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// @link https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string.

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if ( preg_match( '/^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:\.([1-9\d*]))?(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$/', $raw_target ) ) {

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$callback = [ $this, 'get_timestamp_upgraded' ];

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}

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// If callback is callable, return it. Otherwise, return fallback.

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return is_callable( $callback ) ? $callback : '__return_zero';

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}

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/**

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* Retrieve a timestamp when WPForms was upgraded.

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*

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* @since 1.7.5

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*

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* @param string $version WPForms version.

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*

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* @return int|false Unix timestamp. False on failure.

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*/

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private function get_timestamp_upgraded( $version ) {

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if ( $version === 'upgraded' ) {

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$version = WPFORMS_VERSION;

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}

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$timestamp = wpforms_get_upgraded_timestamp( $version );

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if ( $timestamp === false ) {

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return false;

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}

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// Return a current timestamp if no luck to return a migration's timestamp.

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return $timestamp <= 0 ? time() : $timestamp;

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}

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/**

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* Retrieve a timestamp when WPForms was first installed/activated.

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*

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* @since 1.7.5

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*

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* @return int|false Unix timestamp. False on failure.

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*/

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private function get_timestamp_activated() {

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return wpforms_get_activated_timestamp();

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}

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/**

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* Retrieve a timestamp when Lite was first installed.

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*

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* @since 1.7.5

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*

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* @return int|false Unix timestamp. False on failure.

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*/

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private function get_timestamp_lite() {

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$activated = (array) get_option( 'wpforms_activated', [] );

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return ! empty( $activated['lite'] ) ? absint( $activated['lite'] ) : false;

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}

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/**

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* Retrieve a timestamp when Pro was first installed.

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*

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* @since 1.7.5

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*

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* @return int|false Unix timestamp. False on failure.

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*/

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private function get_timestamp_pro() {

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$activated = (array) get_option( 'wpforms_activated', [] );

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return ! empty( $activated['pro'] ) ? absint( $activated['pro'] ) : false;

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}

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/**

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* Retrieve a timestamp when a first form was created.

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*

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* @since 1.7.5

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*

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* @return int|false Unix timestamp. False on failure.

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*/

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private function get_timestamp_forms_first_created() {

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$timestamp = get_option( 'wpforms_forms_first_created' );

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return ! empty( $timestamp ) ? absint( $timestamp ) : false;

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}

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/**

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* Retrieve a number of entries.

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*

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* @since 1.7.5

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*

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* @return int

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*/

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private function get_entry_count() {

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static $count;

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if ( is_int( $count ) ) {

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return $count;

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}

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global $wpdb;

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$count = 0;

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$entry_handler = wpforms()->obj( 'entry' );

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$entry_meta_handler = wpforms()->obj( 'entry_meta' );

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if ( ! $entry_handler || ! $entry_meta_handler ) {

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return $count;

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}

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$query = "SELECT COUNT( $entry_handler->primary_key )

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FROM $entry_handler->table_name

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WHERE $entry_handler->primary_key

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NOT IN (

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SELECT entry_id

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FROM $entry_meta_handler->table_name

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WHERE type = 'backup_id'

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);";

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// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching, WordPress.DB.PreparedSQL.NotPrepared

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$count = (int) $wpdb->get_var( $query );

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return $count;

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}

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/**

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* Retrieve forms.

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*

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* @since 1.7.5

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*

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* @param int $posts_per_page Number of form to return.

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*

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* @return array

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*/

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private function get_forms( $posts_per_page ) {

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$forms = wpforms()->obj( 'form' )->get(

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'',

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[

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'posts_per_page' => (int) $posts_per_page,

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'nopaging' => false,

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'update_post_meta_cache' => false,

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'update_post_term_cache' => false,

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'cap' => false,

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]

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);

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return ! empty( $forms ) ? (array) $forms : [];

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}

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/**

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* Determine if the user has at least 1 form.

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*

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* @since 1.7.5

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*

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* @return bool

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*/

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private function has_form() {

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return ! empty( $this->get_forms( 1 ) );

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}

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/**

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* Determine if it is a new user.

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*

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* @since 1.7.5

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*

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* @return bool

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*/

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private function is_new_user() {

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// Check if this is an update or first install.

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return ! get_option( 'wpforms_version_upgraded_from' );

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}

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/**

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* Determine if it's an English site.

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*

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* @since 1.7.5

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*

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* @return bool

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*/

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private function is_english_site() {

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static $result;

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if ( is_bool( $result ) ) {

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return $result;

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}

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$locales = array_unique(

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array_map(

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[ $this, 'language_to_iso' ],

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[ get_locale(), get_user_locale() ]

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)

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);

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$result = count( $locales ) === 1 && $locales[0] === 'en';

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return $result;

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}

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/**

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* Convert language to ISO.

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*

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* @since 1.7.5

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*

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* @param string $lang Language value.

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*

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* @return string

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*/

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private function language_to_iso( $lang ) {

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return $lang === '' ? $lang : explode( '_', $lang )[0];

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}

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/**

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* Retrieve a modified URL query string.

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*

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* @since 1.7.5

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*

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* @param array $args An associative array of query variables.

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* @param string $url A URL to act upon.

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*

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* @return string

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*/

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private function add_query_arg( $args, $url ) {

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return add_query_arg(

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array_merge( $this->get_utm_params(), array_map( 'rawurlencode', $args ) ),

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$url

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);

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}

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/**

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* Retrieve UTM parameters for Event Driven notifications links.

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*

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* @since 1.7.5

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*

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* @return array

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*/

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private function get_utm_params() {

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static $utm_params;

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if ( ! $utm_params ) {

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$utm_params = [

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