How can PHP be used to handle and display security question options dynamically based on user selections in a registration form?

To handle and display security question options dynamically based on user selections in a registration form, you can use JavaScript to detect the user's selection and then make an AJAX request to a PHP script that retrieves and returns the appropriate security questions. The PHP script can query a database or use predefined logic to determine the relevant security questions for the selected option. 

<?php
// Assuming the AJAX request sends the selected option as a parameter named 'selection'
$selectedOption = $_GET['selection'];

// Define an array of security question options based on the selected option
$securityQuestions = [];

if ($selectedOption === 'email') {
    $securityQuestions = ['What is your email provider?', 'What is your email address?'];
} elseif ($selectedOption === 'phone') {
    $securityQuestions = ['What is your phone number?', 'What is your phone model?'];
} elseif ($selectedOption === 'birthday') {
    $securityQuestions = ['What is your birth month?', 'What is your birth year?'];
}

// Return the security questions as JSON
echo json_encode($securityQuestions);
?>

Keywords

PHP dynamic user selections registration form security questions

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