PHP Click on Modify when read remove pull selection box for the default value of the database problem!

PHP Database Industry Data

I've added this to the data recordset, and what I don't understand is
When I click on the edit page, the value of the drop-down selection box is retrieved from the database, what is the current value, and what is the default value of the drop-down selection box into the Modify dropdown? For example: The current value is ' International Expo ' when I click on the change, the value of the drop-down box is the default is "International Expo", I was a rookie engaged in the afternoon did not fix, please help Oh! Thanks, man.

Reply to discussion (solution)

Modification page: update.php?id=

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