Wrote a PHP random quiz verification Code, security personally think is still good

Wrote a PHP random quiz verification Code, security personally think it is good.

wangking717 wrote

Security features One:

1. The generated content is not the final result, but a question-and-answer system that requires users to respond to the problem, with a more rigorous safety factor than traditional verification codes.

2. The colors, fonts, and positions of each number generated are random, so that it is difficult for others to capture the rules of the program. (The interference line did not get it)

?

If there are any good suggestions, you can leave a message and improve the code together:

?

Finish the call. Oh.

1/F 521069108 2011-09-21

Hmm, a little bit of meaning, can only increase the Chinese answer and so on?

2/F 521069108 2011-09-21

Estimate that you want to save the database to do what I said.-0

