Evaluate the php regular expression to match the output with three identical characters: yes

If the php regular expression matches three identical characters, the output is as follows:
$ Str = "me and I ";

There are 3 identical words
Echo 'yes ';


$ Str2 = "I am a great guy ";

There are 3 identical words
Echo 'yes ';




$ Str3 = "12333456 ";

There are 3 identical words
Echo 'yes ';


I don't know what the character is! It must contain three identical characters.
Method! Best Regular Expressions

Reply to discussion (solution)

$ Str2 = "I am a great guy"; if (preg_match ('/(. +) \ 1 {2}/', $ str2) echo 'yes ';

Thank you very much!

How can I collect the data from the following Station? Only the data is returned. I tried it multiple times and it failed. I don't have much points available for help. Thank you!
Https://estore.heilind.com/search.asp? P = 7652