Online PHP editor | refs for GAp5oX

<?php define('FIELDS', ['name', 'address', 'city']); define( 'HTML_FIELD_FORM', <<<'HTML' <h2>%1$s</h2> <form method="post" autocomplete="off"> <input type="text" name="%1$s" autocomplete="off" placeholder="%1$s"><br> <input value="submit" type="submit"> </form> HTML ); define( 'HTML_CLEAR_FORM', <<<'HTML' <form method="post" autocomplete="off"> <input type="text" name="%1$s" value="1" hidden><br> <input value="%1$s" type="submit"> </form> HTML ); foreach (FIELDS as $field) { if (isset($_POST[$field])) { // Set session & cookie from post $_SESSION[$field] = $_POST[$field]; setcookie($field, $_POST[$field]); } elseif (isset($_COOKIE[$field])) { // Set session from cookie $_SESSION[$field] = $_COOKIE[$field]; } elseif (!isset($_SESSION[$field])) { // Present individual field form printf(HTML_FIELD_FORM, $field); } } foreach (['clear_session', 'clear_cookies'] as $action) { printf(HTML_CLEAR_FORM, $action); }