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

Id personally check to see if the string has a mixture of Uppercase and Lowercase letters then if so, give a score of +1

If it has numbers , add another +1
If it has odd stuff like :@# etc . then add +2

Then mark outta 4

This cannot be done with php alone if only you don't want to submit a form on every character entered. You will have to use ajax also.

Considering the php side, you can create several strings containing different sets of characters, e.g. lowercase letters, uppercase letters, digits and special characters, and then preg_match the entered password along them adding a score point every time it matches as lynxus advised.

here you are:

http://www.crankberryblog.com/2010/p...etector-script

if you want per character testing then mtishetsky is right you need to use alternatives

if you want to give real-time feedback as the user types the password, you can use the JavaScript widget below:
A rich password widget for your web forms

I agree with most of the posters, You really cannot use php to validate text as it is being typed. PHP works in somewhat of an instance. It does not work without refreshing the page. In theory you could do it, but it would require the refreshing of the page, and would also require the data to be submitted and replied, which in my opinion is not secure.