Create a two-string activity, $ a and $ b. Repeat times when two strings contain the same two letters in the same index. These two letters should appear in consecutive indices. For example, if $ a =...

IN PHP

Extracted text: Create a two-string activity, $ a and $ b. Repeat times when two strings contain the same two letters in the same index. These two letters should appear in consecutive indices. For example, if $ a = "bboiizz" and $ b = "bbuiiz", your function should return 3, as "bb", "ii", and "iz" appear in the same place both strings. Examples strMatchBy2char ("yytaazz", "yyjaaz") → 3 strMatchBy2char ("edabit", "ed") → 1 strMatchBy2char ("", "") → 0