title: PHP : Does serialize cost much performance?
body: <p>I'm going to use serialize to store some big array to save into mySQL, and I wonder if this method costs countable performace ?</p>
  
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  <p>The array I'm going to store is the user's price lists. I made a dynamic form for user to type in their price list, and each pricelist contains about 20 to 100 lines. Each line has 4 fields : product_name, unit, wholesale price, retail price.</p>
  
  <p>I just want to save the lists &amp; re-display them, not for querying by SQL.</p>