How to default select another option in select?

Question

PHP

Hello. Can you please tell me how to choose for select by default the option whose id is passed from the database?
i.e. there is a code

$old = mysql_fetch_array(mysql_query("SELECT title, cost, fr, btext, img, category FROM service WHERE id='".$iidd."'"));

<select name="category" value="<?php echo $old[5]; ?>">
              		<option value="1">Популярные</option>
              		<option value="2">YouTube</option>
              		<option value="3">Вконтакте</option>
              		<option value="4">Twitter</option>
              		<option value="5">Instagram</option>
              		<option value="6">Facebook</option>
              		<option value="7">Одноклассники</option>
              		<option value="8">Google+</option>
              		<option value="9">Periscope</option>
              		<option value="10">Другие услуги</option>
              	</select>

Let's say in SQL the line has the number 7 in the category, how to make it so that when the page is opened, by default the list had an option with value = 7

Answer 1

For the required item, set the selected="selected" attribute