php - 如何从 PHP 显示 JavaScript 警报？

Question

我不会用 PHP 编写代码，但我有这个从网上下载的表单，它运行良好:

我想做的是以某种方式在这里添加一些代码，可以启动一个 JS 脚本，简单的警告框，说“谢谢你的表单已提交”。在这个 mailer.php 文件收到表单之后。

<?php
if(isset($_POST['submit'])) {

$to = "myEmail@email.com";
$subject = "Form Tutorial";
$name_field = $_POST['name'];
$email_field = $_POST['email'];
$message = $_POST['message'];

$body = "From: $name_field\n E-Mail: $email_field\n Message:\n $message";

echo "Data has been submitted to $to!";
mail($to, $subject, $body);

} else {

echo "blarg!";

}
?>

Answer 1

代替:

echo "Data has been submitted to $to!";

只是

echo '<script type="text/javascript">alert("Data has been submitted to ' . $to . '");</script>';