Array
(
    [Улица] => Array
        (
            [id] => 45824
            [value] => Моисееввиа
            [name] => Улица
            [unique_name] => %d1%83%d0%bb%d0%b8%d1%86%d0%b0
        )

    [Дом] => Array
        (
            [id] => 45825
            [value] => 12
            [name] => Дом
            [unique_name] => %d0%b4%d0%be%d0%bc
        )

    [Корпус] => Array
        (
            [id] => 45826
            [value] => 2
            [name] => Корпус
            [unique_name] => %d0%ba%d0%be%d1%80%d0%bf%d1%83%d1%81
        )

    [Квартира] => Array
        (
            [id] => 45827
            [value] => 4
            [name] => Квартира
            [unique_name] => %d0%ba%d0%b2%d0%b0%d1%80%d1%82%d0%b8%d1%80%d0%b0
        )

    [Индекс (для почты)] => Array
        (
            [id] => 45828
            [value] => 452665
            [name] => Индекс (для почты)
            [unique_name] => %d0%b8%d0%bd%d0%b4%d0%b5%d0%ba%d1%81-%d0%b4%d0%bb%d1%8f-%d0%bf%d0%be%d1%87%d1%82%d1%8b
        )

    [Комментарий] => Array
        (
            [id] => 45830
            [value] => авпвап вап рваплорв алпорв аплорв полвар полва рпловар плвоап рвлаоп рвлоп рваолп врап
            [name] => Комментарий
            [unique_name] => delivertoafriend
        )

)

print_r($purchlogitem->customcheckoutfields);

   $one = $purchlogitem->customcheckoutfields["Комментарий"]['value']); 
   echo $one;

function purchase_logs_checkout_fields(){
		global $purchlogitem;

		if ( ! empty( $purchlogitem->additional_fields ) ) {
		?>
			<div class="metabox-holder">
				<div id="custom_checkout_fields" class="postbox">
					<h3 class='hndle'><?php esc_html_e( 'Additional Checkout Fields' , 'wpsc' ); ?></h3>
					<div class='inside'>
						<?php
						foreach( (array) $purchlogitem->additional_fields as $value ) {
							$value['value'] = maybe_unserialize ( $value['value'] );
							if ( is_array( $value['value'] ) ) {
								?>
									<p><strong><?php echo $value['name']; ?> :</strong> <?php echo implode( stripslashes( $value['value'] ), ',' ); ?></p>
								<?php
							} else {
								$thevalue = esc_html( stripslashes( $value['value'] ));
								if ( empty( $thevalue ) ) {
									$thevalue = __( '<em>blank</em>', 'wpsc' );
								}
								?>
									<p><strong><?php echo $value['name']; ?> :</strong> <?php echo $thevalue; ?></p>
								<?php
							}
						}
						?>
					</div>
				</div>
			</div>
		<?php
		}
	}