Script for checking strong password weak password possible in PHP?

Hello Friends

In a form while entering data in password field what is the simplest way to show the status weak password or strong password in PHP?

Thanks

 

Jquery + PHP or Ajax + PHP.

 

And some basic logic:

"Only uppercase or lowercase?" -> +1 weak
"No numbers?" -> +1 weak
"Less than 6 characters?" -> +1 weak

Then add it up and assign values to types of weakness.

3 = Extremely Weak
2 = Very Weak
1 = Slightly Weak

Could do the same thing in reverse to display Strong types.

 

I don't think this is easy, but can be done
I'm not sure how some websites do, but I think you may take care of these things to check the strenght:
1-lenght of the password.
2-existing of numbers
3-upper and lower cases
4-how many repeated characters there exist
5-numbers are next to each other (like: agsjnj1230) or seperated (a5d8df58) (seperated is better)

You can also check how to create strong random passwords