Password confirmation issue

jPaulB · Sep 20, 2023

Hi Everybody,

I have a form that will ask a visitor to make a password, and then re-enter the same password to confirm. The HTML code is as follows:

HTML:

<div class="row">
    <div class="col-sm-6 form-group">
        <div class="input-group">
            <span class="input-group-text"><i class="bi-key-fill" arial-hidden="true"></i>&nbsp;</span>
            <input type="password" class="form-control" placeholder="Your Password" id="PW1" name="PW1" required="required">
        </div>
    </div>
    <div class="col-sm-6 form-group">
        <div class="input-group">
            <span class="input-group-text"><i class="bi-key-fill" arial-hidden="true"></i>&nbsp;</span>
            <input type="password" class="form-control" placeholder="Enter Password Again to confirm" id="PW2" name="PW2" required="required"><br>
        </div>
    </div>
</div>

And it will look like this.

I plan to evaluate both inputs with this:

PHP:

if ($_POST["PW1"]) !== $_POST["PW2"] {

} else {
        ????????
}

My issue is if the evaluation fails, I want to clear the two responses and start the process again.

How on earth will I do that?

:::::

BigDady · Sep 21, 2023

A simple answer, but first some logic. When I was a young fledgling tadpole my froggy father said, "Never send things to the server that will come back, test them with JavaScript (the savior of extra web traffic) first before you send them the first time.".
So test with JS and do the DOM thing before asking PHP to do it. And of course, also test in PHP.

jPaulB · Sep 21, 2023

Thanks BigDady,

But how would I clear the two responces, and start the process over again at : <div class="row">

VBService · Sep 21, 2023

Did you tried something like that?

PHP:

<?php
    $passwords_equality = '';

    if ($_SERVER["REQUEST_METHOD"] == "POST") {
        $pw1 = $_POST["PW1"] ?? null;
        $pw2 = $_POST["PW2"] ?? null;
        if ($pw1 && ($pw1 == $pw2)) {
            // Do something when passwords are equal
            // check some data from database
            // set some session variables
            // redirect the call to another page ect.
        } else {
            $passwords_equality = 'Passwords do not match!';
        }
    }
?>
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN" crossorigin="anonymous">
        <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-C6RzsynM9kWDrMNeT87bh95OGNyZPhcTNXj1NW7RuBCsyN/o0jlpcV8Qyq46cDfL" crossorigin="anonymous"></script>

        <style>
            .error {
                color: red;
                padding: .5rem 1rem;
            }
        </style>
    </head>
    <body>
        <form method="post">
            <div class="row">
                <div class="col-sm-6 form-group">
                    <div class="input-group">
                        <span class="input-group-text"><i class="bi-key-fill" arial-hidden="true"></i>&nbsp;</span>
                        <input type="password" class="form-control" placeholder="Your Password" id="PW1" name="PW1" required="required">
                    </div>
                </div>
            </div>
            <div class="row">
                <div class="col-sm-6 form-group">
                    <div class="input-group">
                        <span class="input-group-text"><i class="bi-key-fill" arial-hidden="true"></i>&nbsp;</span>
                        <input type="password" class="form-control" placeholder="Enter Password Again to confirm" id="PW2" name="PW2" required="required"><br>
                    </div>
                </div>
            </div>
            <div class="row">
                <div class="col-sm-6 form-group">
                    <span class="error"><?php echo $passwords_equality; ?></span>
                </div>
            </div>
            <div class="row">
                <div class="col-sm-6 form-group">
                    <button type="submit" class="form-control">Submit</button>
                </div>
            </div>
        </form>
    </body>
</html>

jPaulB · Sep 21, 2023

Thanks Fellows.

BigDady was right! I shouldn't be using PHP to validate the two inputs. I'll move over to the JavaScript forum to ask about it.

BigDady · Sep 22, 2023

jPaulB, You also MUST re-evaluate using PHP. This is important to do anytime the user sends you anything.

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Password confirmation issue

jPaulB

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