It's impossible to connect PhpStorm to TortoiseSVN as they are doing the same thing.
Then you have two choices :
- Connect PhpStorm to your SVN server with his built-in feature.
- Or use TortoiseSVN
I'll recommande using PhpStorm feature as it is directly in the IDE.
You can find documentation here : https://www.jetbrains.com/phpstorm/webhelp/using-subversion-integration.html