better way for insert data to mysql database using php

Question

I need to design database table for article reviews.

First way :

|id|name|email|date|ip|article_id|avatar|user_id|review_field_1|review_field_2|review_field_3|review_field_4|review_field_5|review_field_6|

result: using normal query

Second Way:

|id|article_id|serialize_data|

method: serialize / unserialize

OR:

|id|article_id|json_data|.

method: json_encode / json_decode

which way is better and faster ?!