if (requiredPostVar('name')) { // the 'name' POST variable is set and not empty $name = $_POST['name']; // do something with $name } else { // the 'name' POST variable is not set or empty // handle error here }
if (requiredPostVar(['name', 'email', 'message'])) { // all three POST variables are set and not empty $name = $_POST['name']; $email = $_POST['email']; $message = $_POST['message']; // do something with the values } else { // at least one of the POST variables is missing or empty // handle error here }In this example, we are checking that three different POST variables ('name', 'email', and 'message') are all present and not empty. If they pass the validator, we can use their values. If one or more of them fails, we can handle the error. The requiredPostVar validator appears to be a custom function or package, as it is not a built-in PHP function. It is likely part of a PHP library or framework that provides additional functionality for validating form submissions.