Why does crypt/blowfish generate the same hash with two different salts?

Question

This question has to do with PHP\'s implementation of crypt(). For this question, the first 7 characters of the salt are not counted, so a salt \'$2a$07$a\' wo

Answer 1

Looks like the outputs are actually different. (da$, vs da2) for result of salt_20 and salt_21.