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Question

函数constructMessageBody用于从联系人创建电子邮件的正文文本。该表单包含必填字段和非必填字段，但只有它只将必填字段添加到电子邮件正文中。

  function constructMessageBody () {
    $fields_req =  array("addressline1" => true, "postcode" => true, "priority" => true, "description" => true, "email" => true);
    $message_body = "";
    foreach ($fields_req as $name => $required) {
      $postedValue = $_POST[$name];
      if ($required && empty($postedValue)) {
        errorResponse("$name is empty.");
      } else {
        $message_body .= ucfirst($name) . ":  " . $postedValue . "\n";
      }
    }
    return $message_body;
  }

Answer 1

在$fields_req数组中添加表单的每个输入字段。那些不需要的内容将它们添加为"field" => false：

$fields_req = array("addressline1" => true, "field2" => false, "postcode" => true);