Is it possible to import a text file with phpmyadmin?

In the file is this:

```
country - county / city
USA - Florida / Orlando
USA - Florida / Miami
USA - Washington / Washington DC
Switzerland - Solothurn / Grenchen

```

The file has over 3000 lines

Now i want to import to my catergory table
the table is like this:

```
id | parent_id | name

```

The country and county is in the file several times. In my database i need it only once.
City is in the file unique

Can i make this with phpmyadmin or is it only possible with php?
Can anybody tell me how to do this.
Thanks