为什么'；这张PHP联系人表单是否发送电子邮件？

这是一个非常基本的问题，但我一点也搞不懂。当这个PHP表单提交时，它不会发送电子邮件，我也不知道为什么。我希望你们能帮忙

<?php 
if($_POST['submit']){
    $to = "email@email.com";
    $from = $_POST['email'];
    $name = $_POST['name'];
    $subject = "Form submission";
    $message = $name . " wrote the following:" . "\n\n" . $_POST['message'];
    $headers = "From:" . $from;
    mail($to,$subject,$message,$headers);
    echo "Mail Sent. Thank you " . $name . ", we will contact you shortly.";
    header( 'Location: http://example.com' ) ;
    }
?>

姓名：
电邮地址：
信息：

谢谢

请按此方式检查：

<?php 
if($_POST['submit']){
    $to = "email@email.com";
    $from = $_POST['email'];
    $name = $_POST['name'];
    $subject = "Form submission";
    $message = $name . " wrote the following:" . "\n\n" . $_POST['message'];
    $headers = "From:" . $from;
     if(mail($to,$subject,$message,$headers)){
       echo "Mail Sent. Thank you " . $name . ", we will contact you shortly.";
       header( 'Location: http://example.com' ) ;
     }else
     {
            echo "Mail failed to Sent";
     }
}
?>

在HTML文件中

form action=”“method=“post”

---

应该这样做（如果您当然在php中包含HTML）

有什么错误？请尝试

if（mail（$to，$subject，$message，$headers））{echo'sent'}或者{echo'not sent'}

可能是因为缺少表单标记？你能从你的服务器发送邮件吗？您确定已安装邮件列表并准备启动吗？是否尝试在本地主机上执行此操作？请检查您的smtp设置。如果邮件未发送，它只会隐藏邮件，不会解释邮件未发送的原因。。。

<?php 
if($_POST['submit']){
    $to = "email@email.com";
    $from = $_POST['email'];
    $name = $_POST['name'];
    $subject = "Form submission";
    $message = $name . " wrote the following:" . "\n\n" . $_POST['message'];
    $headers = "From:" . $from;
     if(mail($to,$subject,$message,$headers)){
       echo "Mail Sent. Thank you " . $name . ", we will contact you shortly.";
       header( 'Location: http://example.com' ) ;
     }else
     {
            echo "Mail failed to Sent";
     }
}
?>