Exporting in Serialized format | WordPress.org

Hi there, i am using “Advanced Order Export For WooCommerce” for order export. I have some custom in put fields in my checkout and i am showing these fiels in woocommerce > orders using this hook “woocommerce_admin_order_totals_after_tax”. This data is in serialize form in data base and meta key is “_participant”. so now when i export data by add field and fill it with meta key it showing me data in this format
s:906:”a:21:{s:14:”part_full_name”;a:1:{i:0;s:19:”Developer Testing 2″;}s:18:”part_contact_phone”;a:1:{i:0;s:11:”45454545454″;}s:20:”additional_checkbox1″;a:1:{i:0;s:2:”on”;}s:20:”additional_checkbox2″;a:1:{i:0;s:2:”on”;}s:9:”occupant1″;a:1:{i:0;s:9:”occupancy”;}s:8:”birthday”;a:1:{i:0;s:10:”1999-06-14″;}s:7:”address”;a:1:{i:0;s:9:”test”;}s:4:”city”;a:1:{i:0;s:4:”test”;}s:5:”state”;a:1:{i:0;s:4:”test”;}s:3:”zip”;a:1:{i:0;s:5:”46000″;}s:8:”pass_num”;a:1:{i:0;s:10:”6AuPQ3d6KH”;}s:17:”upload_img_hideen”;a:1:{i:0;s:0:””;}s:6:”gender”;a:1:{i:0;s:4:”male”;}s:11:”aware_issue”;a:1:{i:0;s:18:”concerns concerns “;}s:11:”require_any”;a:1:{i:0;s:12:”requirements”;}s:13:”note_organize”;a:1:{i:0;s:18:”OrganizerOrganizer”;}s:10:”refference”;a:1:{i:0;s:18:”referred referred “;}s:5:”adult”;a:1:{i:0;s:5:”adult”;}s:9:”knowledge”;a:1:{i:0;s:2:”on”;}s:9:”send_mail”;a:1:{i:0;s:2:”on”;}s:5:”terms”;a:1:{i:0;s:2:”on”;}}”;
i want it to be pretier
Can you help me out.