How to export mysql schema from phpmyadmin?
In the Export tab for your database, there's a checkbox on the lower right that says Data.
Uncheck it and you should only have the bare structure in your export file.
With the newer phpmyadmin versions, in the export tab for your database or table click on custom.
Under Format-specific options click dump table -> structure
Select your database or table.
Select the Export tab.
Below Export method, select Custom.
Below Tables, check the appropriate Structure boxes.
Here's a screenshot: