Question

What is the code for a PHP form that matches a user input to a correct response and if it is not equal, it returns an error and if it is it shows a successful message.

Example:
If the proper string to insert is 1234 and the user enters 3948, it should return an error, but if the user enters 1234 it should go to a new page.

Answer 1

Make a form that calls a php script as its action and in that php script test the value of the field against the ‘1234‘ or whatever you wanted.

if($_POST['variable'] == '1234'){ 
    header('Location: http://www.site.com/success'); 
}else{
    echo 'Error Message';
}