vb.org Archive - preg_match help required for password security

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pwebb

02-05-2007 11:41 PM

preg_match help required for password security

Hi,

Could anyone please help with the preg_match expression I will need to perform the following.

I need it to check a password field for a password that contains :-

numeric chars (min of 1)
upper case letters (min of 1)
lower case letters (min of 1)
The password must be at least 6 characters and only be made up of upper and lower case letters and numbers.

Any help would be greatly appreciated.

Regards,

Cap'n Steve

02-06-2007 03:14 AM

I'm not sure if that's possible in a single regular expression. Here's 4, though:

Code:

numeric chars (min of 1)

/\d/

upper case letters (min of 1)

/[A-Z]/

lower case letters (min of 1)

/[a-z]/

The password must be at least 6 characters and only be made up of upper and lower case letters and numbers.

/[a-z0-9]{6,}/i

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