Why is my function changing boolean value to 'on'?

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So I\'m new to php/the programming world and I\'m studying online and other forms and such but I couldn\'t find anything to help answer my question which is why I\'m here. Any h

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北荒

2021-01-29 06:45

Change related line to following: The problem is when activateBox is not empty it assings itself to $activeMain naturally.

$activeMain = isset($_POST['activateBox']);

Updated : Check this one.

function activeCheck() {
    return isset($_POST['activateBox']);
}

activeCheck();

Updated Answer Due To Updated Question : I removed session_destory if you execute that and if you have another session variable ex: user isLoggedIn it would be destroyed too. unset is OK for the purpose. Please check XSS, Sql injection attacks around the internet implement logic according to best practises, and validate/sanitize your data before process parameters into DB or etc.

<?php
// formView.php
ob_start();
session_start();
?>
<!DOCTYPE HTML>
<HTML>
    <head>
        <title>PHP FORM</title>
    </head>

<body>
    <form method="POST" action="processForm.php">
    Name: <input type="text" name="names" required = "required"><br>
    <input type="submit" value="Create Users" onclick="formNAMES"><br>
    Activate: <input type="checkbox" name="activateBox">
    <?php

    if (isset($_SESSION ['error'])) {
            foreach ($_SESSION['error'] as $value) {
                echo $value;
            }
            unset($_SESSION['error']);
    }


    /* Above if statement checks if $_SESSION variable has been set in processForm page. If it has, 
    an error message corresponding to the error shows up on redirect to this form. The unset makes sure 
    the $_SESSION is destroyed upon completion of the process. */

    ?>
    </form>
</body>
</html>
<?php ob_end_clean(); ?>


<?php
// processForm.php

if (!empty($_POST)) {
    $safeParameters = [];
    foreach ($_POST as $key => $val) {
        // sanitize your inputs. @see XSS, SQL injection etc.
        // validate parameters according to your needs.
        $safeParameters[$key] = $val;
    }
    $_POST = [];
    checkIsActivated($safeParameters);
    // implement other logic,
    // save form to database etc.
}

function checkIsActivated($parameters)
{
    return !empty($parameters['activateBox']);
}
?>

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