If you're looking for something to strange your opponents, it would not be prophylactic. When something is prophylactic, it refers to fixing some sort of problem, usually a positional disadvantage.
prophylactic openings

I am looking for an opening to strangle my opponent. Any suggestions
Play like Karpov. He is a good positional squeezer.

I am looking for an opening to strangle my opponent. Any suggestions
Play like Karpov. He is a good positional squeezer.
Yeah, all you need to do is play like Karpov. Shouldn't be too hard.

Haha...play like Karpov...
I have some suggestions:
The Krasenkow variation of the KID
6.a4 in the Najdorf
uhh...yea its late and I can't think of anything else off the top of my head. More later!

If you're looking for something to strange your opponents, it would not be prophylactic. When something is prophylactic, it refers to fixing some sort of problem, usually a positional disadvantage.
I was under the impression that prophylactic play was preventing your opponent from having opportunities rather than creating any yourself
I am looking for an opening to strangle my opponent. Any suggestions