Description:
------------
The documentation states, that the salt for bcrypt hashing requires 22 
characters. You do actually need to provide 22 Characters, however the last 
character is (partially) ignored and not appended to the salt in the encrypted 
password.

It seems that it is not a complete ingorance, however. Apparently the characters 
a-e produce the same results, as do the characters f-z and A-Z. 

This doesn't seem right.... 



Test script:
---------------
// More than 22 Characters will be trimmed
echo crypt('Test','$2a$09$alongstringwithmanycharacters');
// $2a$09$alongstringwithmanychOw5ylWHc1konZ7sxrgs2HrhMWZdgvW0W


// 21 Characters -> Error
echo crypt('Test','$2a$09$alongstringwithmanych');
// *0

// 22 Characters -> Works, notice how the last char isn't shown in the pw
echo crypt('Test','$2a$09$alongstringwithmanycha');
// $2a$09$alongstringwithmanychOw5ylWHc1konZ7sxrgs2HrhMWZdgvW0W

// 22 Characters -> Different salt, same result! The last char is required but  ignored
echo crypt('Test','$2a$09$alongstringwithmanychb');
// $2a$09$alongstringwithmanychOw5ylWHc1konZ7sxrgs2HrhMWZdgvW0W