It was a great surprise...

Hello everyone!

The other day I sat an exam, one of the exercises was to fill in the gaps, I had no words to choose, so, I had to come up with them. There is one sentence I couldn't understand, I just couldn't get the word, so, I wrote the first thing that came to my mind, I'm sure it doesn't make sense.  The sentence was:

- It was a great surprise when I ____ into Peter in the street yesterday.             I wrote "got", but, doesn't "got into" mean get somewhere? So, it's impossible to get into Peter's body. But, "meet" doesn't make sense either, I was allowed to use only one word, so, can anyone come up with any?

It's the "into" the thing that confuses me..I even thought that Peter could be a shop, but, then, "in the street yesterday" wouldn't make sense. I also thought that "Peter" could be a street, but, again "in" shouldn't be there, right?

Thanks in advance for your help!

It was a great surprise when I ran into Peter in the street yesterday.  

Ant_222, thanks for answering!     But, do you think you can tell me what it means?

I mean, if you ran towards someone, you can't be surprised, it's Peter the one who should have been surprised, shouldn't he? 

Yep, I still without understanding it..

("Bump"?)

I was thinking "bumped" too.

LOL, you're obsessed about idioms

Yeah, they are the same. I call them "phrasal verbs", by the way, but they are idioms, in some ways.