'; } } else { $quantity = NULL; echo 'Please enter quantity
'; } if (!empty($_POST['email'])) { $email = $_POST['email']; // // check if the data entry is in an expected pattern // $pattern = '/\b[\w.-]+@[\w.-]+\.[A-Za-z]{2,6}\b/'; // if (!preg_match($pattern, $email)) // { // $email = NULL; // echo 'Email address is incorrect format
'; // } // An alternative solution is to set type="email" in an tag // and have the form submit to itself } else { $quantity = NULL; echo 'Please enter an email address
'; } if (($quantity != NULL) && ($email != NULL)) echo "Email: $email
Quantity: $quantity "; ?>