我希望在用户单击“名称”、“电子邮件”或“消息”框之前不显示 errName errEmail errMessage 文本。另外我想在按下提交按钮之前不显示 $result 。截至目前,即使用户没有与提交表单交互,它也只显示 errName、errEmail、errMessage 和警报。<?phperror_reporting(E_ALL);ini_set('display_errors', 1);global $result;if (isset($_POST["submit"])) { $errName =""; $errEmail =""; $errMessage =""; $result=""; $name = $_POST['name']; $business = $_POST['business']; $email = $_POST['email']; $message = $_POST['message']; $from = '------'; $to = '-----'; $subject = 'Message from user on website'; $body ="-------";}// Check if name has been enteredif (!isset($_POST) || !key_exists('name', $_POST) || !filter_var($_POST['name'])) { $errName = 'Please enter your name';}// Check if email has been entered and is validif (!isset($_POST) || !key_exists('email', $_POST) || !filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) { $errEmail = 'Please enter a valid email address';}//Check if message has been enteredif (!isset($_POST) || !key_exists('message', $_POST) || !filter_var($_POST['message'])) { $errMessage = 'Please enter your message';}// If there are no errors, send the emailif (!isset($errName) && !isset($errEmail) && !isset($errMessage)) { $result .= '<br><div class="alert alert-success">Thank You! We will be in touch</div>';} else { $result .= '<br><div class="alert alert-danger">Sorry there was an error sending your message. Please try again later.</div>';}
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