Regex Validation in Laravel 5.2

Question

Below is my rule for password:

return [
    'Password'                  => 'required|min:8|max:100|regex:[a-z{1}[A-Z]{1}[0-9]{1}]',
    'Password_confirmation'     => 'required|min:8|max:100|regex:[a-z{1}[A-Z]{1}[0-9]{1}]',
];

I am trying to add the rule such that it must have

atleast one small char

atleast one big char

atleast one number

atleast one special char

min 8 chars

I tried this and it works required|confirmed|min:8|max:100|regex:/^[\w]{1,}[\W]{1,}$/, on a regex tester software . but not sure why it does not work in Laravel

Am I missing something ?

Mike Rockétt · Accepted Answer · 2016-10-15 07:19:22Z

26

Use:

return [
    'password' => [
        'required',
        'confirmed',
        'min:8',
        'max:50',
        'regex:/^(?=.*[a-z|A-Z])(?=.*[A-Z])(?=.*\d)(?=.*(_|[^\w])).+$/',
    ]
];

Firstly, you do not need to check the confirmation separately. Just use the confirmed rule.

The expression you were using was invalid, and had nothing to do with what you wanted. I do suggest you do some research on regular expressions.

Due to the fact that the expression shown above uses pipes (|), you can specify the rules using an array.

Edit: You could also use this expression, which appears to have been tested a little more thoroughly.

/^.*(?=.{3,})(?=.*[a-zA-Z])(?=.*[0-9])(?=.*[\d\X])(?=.*[!$#%]).*$/

edited Oct 15, 2016 at 7:19

answered Jan 15, 2016 at 5:14

Mike Rockétt

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1 Comment

user1309158 Over a year ago

Setting a low limit on the number of characters a user can use for their password can lead to a bad user experience, especially when the user is using a password manager which generates passwords beyond 20 characters or they want to use a phrase as their password.

Bogdan · Accepted Answer · 2016-01-17 01:50:23Z

7

You might want to check the PasswordStrengthPackage. It registers new validation rules that do what you need and are much more readable than a regular expression. So in your case you can have this:

return [
    'Password' => 'required|min:8|max:100|case_diff|numbers|letters|symbols|confirmed'
];

The Password_confirmation rule is not needed as long as the confirmation value is present and you add the confirmed rule for the Password field.

answered Jan 17, 2016 at 1:50

Bogdan

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