} else {
			$replace['{district}'] = null;
		}

		return $replace;
	}

	function my_account_my_address_formatted_address( $args, $customer_id, $name ) {

		$args['district'] = get_user_meta( $customer_id, $name . '_district', true );

		return $args;
	}

	public function checkout_get_value( $value, $key ) {

		if ( ! in_array( $key, [ 'billing_district', 'shipping_district' ] ) ) {
			return $value;
		}

		return WC()->session->get( $key, 0 );
	}

	// Functions

	public function types() {

		$types = [ 'billing' ];

		if ( ! wc_ship_to_billing_address_only() ) {
			$types[] = 'shipping';
		}

		return $types;
	}

	public static function states() {

		$states = get_transient( 'pws_states' );

		if ( $states === false || count( (array) $states ) == 0 ) {

			$states = get_terms( [
				'taxonomy'   => 'state_city',
				'hide_empty' => false,
				'parent'     => 0,
			] );

			$states = wp_list_pluck( $states, 'name', 'term_id' );

			uasort( $states, [ self::class, 'pws_sort_state' ] );

			set_transient( 'pws_states', $states, DAY_IN_SECONDS );
		}

		return apply_filters( 'pws_states', $states );
	}

	public static function get_state( $state_id ) {

		$states = PWS()->states();

		return $states[ $state_id ] ?? null;
	}

	public static function cities( $state_id ) {

		$cities = get_transient( 'pws_cities_' . $state_id );

		if ( $cities === false || count( (array) $cities ) == 0 ) {

			$cities = get_terms( [
				'taxonomy'   => 'state_city',
				'hide_empty' => false,
				'parent'     => $state_id,
			] );

			if ( is_wp_error( $cities ) ) {
				$cities = [];
			} else {
				$cities = array_column( $cities, 'name', 'term_id' );
			}

			set_transient( 'pws_cities_' . $state_id, $cities, DAY_IN_SECONDS );
		}

		return apply_filters( 'pws_cities', $cities, $state_id );
	}

	public static function get_city( $city_id ) {

		/** @var WP_Term $city */
		$city = get_term( $city_id, 'state_city' );

		return is_wp_error( $city ) || is_null( $city ) ? null : $city->name;
	}

	public function check_states_beside( $source, $destination ) {

		if ( $source == $destination ) {
			return 'in';
		}

		$is_beside["AE"]["AW"] = true;
		$is_beside["AE"]["AR"] = true;
		$is_beside["AE"]["ZA"] = true;

		$is_beside["AW"]["AE"] = true;
		$is_beside["AW"]["KD"] = true;
		$is_beside["AW"]["ZA"] = true;

		$is_beside["AR"]["AE"] = true;
		$is_beside["AR"]["GI"] = true;
		$is_beside["AR"]["ZA"] = true;

		$is_beside["IS"]["CM"] = true;
		$is_beside["IS"]["LO"] = true;
		$is_beside["IS"]["KB"] = true;
		$is_beside["IS"]["MK"] = true;
		$is_beside["IS"]["QM"] = true;
		$is_beside["IS"]["SM"] = true;
		$is_beside["IS"]["KJ"] = true;
		$is_beside["IS"]["YA"] = true;
		$is_beside["IS"]["FA"] = true;

		$is_beside["AL"]["TE"] = true;
		$is_beside["AL"]["MK"] = true;
		$is_beside["AL"]["QZ"] = true;
		$is_beside["AL"]["MN"] = true;

		$is_beside["IL"]["BK"] = true;
		$is_beside["IL"]["LO"] = true;
		$is_beside["IL"]["KZ"] = true;

		$is_beside["BU"]["KB"] = true;
		$is_beside["BU"]["KZ"] = true;
		$is_beside["BU"]["FA"] = true;
		$is_beside["BU"]["HG"] = true;

		$is_beside["TE"]["AL"] = true;
		$is_beside["TE"]["MK"] = true;
		$is_beside["TE"]["QM"] = true;
		$is_beside["TE"]["MN"] = true;
		$is_beside["TE"]["SM"] = true;

		$is_beside["CM"]["KB"] = true;
		$is_beside["CM"]["KZ"] = true;
		$is_beside["CM"]["LO"] = true;
		$is_beside["CM"]["IS"] = true;

		$is_beside["KJ"]["SB"] = true;
		$is_beside["KJ"]["KE"] = true;
		$is_beside["KJ"]["YA"] = true;
		$is_beside["KJ"]["IS"] = true;
		$is_beside["KJ"]["SM"] = true;
		$is_beside["KJ"]["KV"] = true;

		$is_beside["KV"]["KJ"] = true;
		$is_beside["KV"]["KS"] = true;
		$is_beside["KV"]["SM"] = true;

		$is_beside["KS"]["KV"] = true;
		$is_beside["KS"]["GO"] = true;
		$is_beside["KS"]["SM"] = true;

		$is_beside["KZ"]["IL"] = true;
		$is_beside["KZ"]["BU"] = true;
		$is_beside["KZ"]["LO"] = true;
		$is_beside["KZ"]["KB"] = true;
		$is_beside["KZ"]["CM"] = true;

		$is_beside["ZA"]["GI"] = true;
		$is_beside["ZA"]["AR"] = true;
		$is_beside["ZA"]["AE"] = true;
		$is_beside["ZA"]["AW"] = true;
		$is_beside["ZA"]["KD"] = true;
		$is_beside["ZA"]["HD"] = true;
		$is_beside["ZA"]["QZ"] = true;

		$is_beside["SM"]["MN"] = true;
		$is_beside["SM"]["TE"] = true;
		$is_beside["SM"]["QM"] = true;
		$is_beside["SM"]["IS"] = true;
		$is_beside["SM"]["KS"] = true;
		$is_beside["SM"]["KV"] = true;
		$is_beside["SM"]["KJ"] = true;

		$is_beside["SB"]["KJ"] = true;
		$is_beside["SB"]["KE"] = true;
		$is_beside["SB"]["HG"] = true;

		$is_beside["FA"]["IS"] = true;
		$is_beside["FA"]["YA"] = true;
		$is_beside["FA"]["BU"] = true;
		$is_beside["FA"]["HG"] = true;
		$is_beside["FA"]["KB"] = true;
		$is_beside["FA"]["KE"] = true;

		$is_beside["QZ"]["ZA"] = true;
		$is_beside["QZ"]["HD"] = true;
		$is_beside["QZ"]["MK"] = true;
		$is_beside["QZ"]["AL"] = true;
		$is_beside["QZ"]["MN"] = true;
		$is_beside["QZ"]["GI"] = true;

		$is_beside["QM"]["TE"] = true;
		$is_beside["QM"]["MK"] = true;
		$is_beside["QM"]["SM"] = true;
		$is_beside["QM"]["IS"] = true;

		$is_beside["KD"]["AW"] = true;
		$is_beside["KD"]["BK"] = true;
		$is_beside["KD"]["HD"] = true;
		$is_beside["KD"]["ZA"] = true;

		$is_beside["KE"]["YA"] = true;
		$is_beside["KE"]["FA"] = true;
		$is_beside["KE"]["HG"] = true;
		$is_beside["KE"]["SB"] = true;
		$is_beside["KE"]["KJ"] = true;

		$is_beside["BK"]["KD"] = true;
		$is_beside["BK"]["HD"] = true;
		$is_beside["BK"]["LO"] = true;
		$is_beside["BK"]["IL"] = true;

		$is_beside["KB"]["CM"] = true;
		$is_beside["KB"]["KZ"] = true;
		$is_beside["KB"]["BU"] = true;
		$is_beside["KB"]["FA"] = true;
		$is_beside["KB"]["IS"] = true;

		$is_beside["GO"]["MN"] = true;
		$is_beside["GO"]["KS"] = true;
		$is_beside["GO"]["SM"] = true;

		$is_beside["GI"]["MN"] = true;
		$is_beside["GI"]["AR"] = true;
		$is_beside["GI"]["ZA"] = true;
		$is_beside["GI"]["QZ"] = true;

		$is_beside["LO"]["IL"] = true;
		$is_beside["LO"]["BK"] = true;
		$is_beside["LO"]["HD"] = true;
		$is_beside["LO"]["MK"] = true;
		$is_beside["LO"]["IS"] = true;
		$is_beside["LO"]["CM"] = true;
		$is_beside["LO"]["KZ"] = true;

		$is_beside["MN"]["GO"] = true;
		$is_beside["MN"]["SM"] = true;
		$is_beside["MN"]["TE"] = true;
		$is_beside["MN"]["AL"] = true;
		$is_beside["MN"]["IS"] = true;
		$is_beside["MN"]["QZ"] = true;
		$is_beside["MN"]["GI"] = true;

		$is_beside["MK"]["IS"] = true;
		$is_beside["MK"]["QM"] = true;
		$is_beside["MK"]["TE"] = true;
		$is_beside["MK"]["AL"] = true;
		$is_beside["MK"]["LO"] = true;
		$is_beside["MK"]["QZ"] = true;
		$is_beside["MK"]["HD"] = true;

		$is_beside["HG"]["BU"] = true;
		$is_beside["HG"]["FA"] = true;
		$is_beside["HG"]["KE"] = true;
		$is_beside["HG"]["SB"] = true;

		$is_beside["HD"]["BK"] = true;
		$is_beside["HD"]["LO"] = true;
		$is_beside["HD"]["KD"] = true;
		$is_beside["HD"]["MK"] = true;
		$is_beside["HD"]["QZ"] = true;
		$is_beside["HD"]["ZA"] = true;

		$is_beside["YA"]["FA"] = true;
		$is_beside["YA"]["KE"] = true;
		$is_beside["YA"]["KJ"] = true;

		$source      = get_term( $source, 'state_city' );
		$destination = get_term( $destination, 'state_city' );

		if ( is_wp_error( $source ) || is_wp_error( $destination ) ) {
			return false;
		}

		$source      = $source->slug ?? null;
		$destination = $destination->slug ?? null;

		return isset( $is_beside[ strtoupper( $source ) ][ strtoupper( $destination ) ] ) && $is_beside[ strtoupper( $source ) ][ strtoupper( $destination ) ] === true ? 'beside' : 'out';
	}

	public function convert_currency( $price ) {

		switch ( get_woocommerce_currency() ) {
			case 'IRT':
				$price /= 10;
				break;
			case 'IRHR':
				$price /= 1000;
				break;
			case 'IRHT':
				$price /= 10000;
				break;
		}

		return ceil( $price );
	}

	public function get_term_option( $term_id ): array {

		$option = get_option( 'nabik_taxonomy_' . $term_id, [] );

		return apply_filters( 'pws_get_term_option', $option, $term_id );
	}

	public function set_term_option( $term_id, array $option ) {

		$option = apply_filters( 'pws_set_term_option', $option, $term_id );

		update_option( 'nabik_taxonomy_' . $term_id, $option );
	}

	public function delete_term_option( $term_id ) {
		delete_option( 'nabik_taxonomy_' . $term_id );
	}

	public function get_terms_option( $term_id ) {

		$options = wp_cache_get( 'get_terms_option_' . $term_id, 'pws' );

		if ( false !== $options ) {
			return $options;
		}

		$ancestors = get_ancestors( $term_id, 'state_city' );

		if ( empty( $ancestors ) ) {
			return [];
		}

		array_unshift( $ancestors, $term_id );

		$options = array_map( [ $this, 'get_term_option' ], $ancestors );

		wp_cache_set( 'get_terms_option_' . $term_id, $options, 'pws' );

		return $options;
	}

	public static function get_option( string $option_name, $default = null ) {

		[ $section, $option ] = explode( '.', $option_name );

		$options = get_option( 'pws_' . $section, [] );

		if ( isset( $options[ $option ] ) ) {
			return $options[ $option ];
		}

		return $default;
	}

	public static function set_option( string $option_name, $value ) {

		[ $section, $option ] = explode( '.', $option_name );

		$options = get_option( 'pws_' . $section, [] );
		$options = empty( $options ) ? [] : $options;

		$options[ $option ] = $value;

		update_option( 'pws_' . $section, $options );
	}

	public function log( ...$params ) {
		$log = '';

		$date = wp_date( 'Y-m-d' );

		if ( defined( 'WC_LOG_DIR' ) ) {
			$log_file = WC_LOG_DIR . "pws-{$date}.log";
		} else {
			$log_file = WP_CONTENT_DIR . "pws-{$date}.log";
		}

		foreach ( $params as $message ) {

			$log .= wp_date( '[Y-m-d H:i:s] ' );

			if ( is_array( $message ) || is_object( $message ) ) {
				$log .= print_r( $message, true );
			} elseif ( is_bool( $message ) ) {
				$log .= ( $message ? 'true' : 'false' );
			} else {
				$log .= $message;
			}

			$log .= PHP_EOL;
		}

		file_put_contents( $log_file, $log, FILE_APPEND );
	}

	public static function pws_sort_state( $a, $b ) {

		if ( $a == $b ) {
			return 0;
		}

		$states = [
			'آذربایجان شرقی',
			'آذربایجان غربی',
			'اردبیل',
			'اصفهان',
			'البرز',
			'ایلام',
			'بوشهر',
			'تهران',
			'چهارمحال و بختیاری',
			'خراسان جنوبی',
			'خراسان رضوی',
			'خراسان شمالی',
			'خوزستان',
			'زنجان',
			'سمنان',
			'سیستان و بلوچستان',
			'فارس',
			'قزوین',
			'قم',
			'کردستان',
			'کرمان',
			'کرمانشاه',
			'کهگیلویه و بویراحمد',
			'گلستان',
			'گیلان',
			'لرستان',
			'مازندران',
			'مرکزی',
			'هرمزگان',
			'همدان',
			'یزد',
		];

		$a = str_replace( [ 'ي', 'ك', 'ة' ], [ 'ی', 'ک', 'ه' ], $a );
		$b = str_replace( [ 'ي', 'ك', 'ة' ], [ 'ی', 'ک', 'ه' ], $b );

		$a_key = array_search( trim( $a ), $states );
		$b_key = array_search( trim( $b ), $states );

		return $a_key < $b_key ? - 1 : 1;
	}

	public function pws_pro_url( $source ): string {
		return 'https://yun.ir/pws-pro?utm_source=' . esc_attr( $source );
	}

}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'PWS_Core' not found in /home/arasetne/public_html/wp-content/plugins/persian-woocommerce-shipping/includes/class-tapin.php:11
Stack trace:
#0 /home/arasetne/public_html/wp-content/plugins/persian-woocommerce-shipping/woocommerce-shipping.php(46): include()
#1 /home/arasetne/public_html/wp-includes/class-wp-hook.php(324): {closure}('')
#2 /home/arasetne/public_html/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters(NULL, Array)
#3 /home/arasetne/public_html/wp-includes/plugin.php(517): WP_Hook-&gt;do_action(Array)
#4 /home/arasetne/public_html/wp-content/plugins/woocommerce/includes/class-woocommerce.php(205): do_action('woocommerce_loa...')
#5 /home/arasetne/public_html/wp-includes/class-wp-hook.php(324): WooCommerce-&gt;on_plugins_loaded('')
#6 /home/arasetne/public_html/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters(NULL, Array)
#7 /home/arasetne/public_html/wp-includes/plugin.php(517): WP_Hook-&gt;do_action(Array)
#8 /home/arasetne/public_html/wp-settings.php(550): do_acti in <b>/home/arasetne/public_html/wp-content/plugins/persian-woocommerce-shipping/includes/class-tapin.php</b> on line <b>11</b><br />