creating passwords with numbers/letters

[tmaguir]

I am creating an application where users must create a password. There are rules to these passwords, must be at least 6 char long, no char can appear more than 3 times, and there must be at least 2 numbers and 2 letters.

This is where I have a problem. Can anyone give me a starting point on how to check if the passwords have 2 letters and 2 numbers. Should I use the chr() function? how about ereg()?

Any help appreaciated,

Thanks,
Tim.

[techek]

I don't know if it's a lame solution, but my idea would be to do the following :

1) Make a string containing chars that a valid in your passwords

2) For each of the chars in the string, count the number of times the char is found in the password (substr_count)

Then make sure if your rules are obeyed. If not, password is bad, else it's okay.

Just an idea - if you need an example, feel free to contact me.