表单响应：“无法处理请求 HTTP ERROR 500”。我做错了什么？

Question

我尝试在网站上编写 php 表单，但收到错误 500。我无法弄清楚我做错了什么。你能看一下代码看看我做错了什么吗？ PHP：

<?php
// define variables and set to empty values
$name = $email = $phone = $enquiry = "";

if ( $_SERVER[ "REQUEST_METHOD" ] == "POST" ) {

  if ( empty( $_POST[ "name" ] ) ) {
    $nameErr = "Name is required";
  } else {
    $name = test_input( $_POST[ "name" ] );
    // check if name only contains letters and whitespace
    if ( !preg_match( "/^[a-zA-Z-' ]*$/", $name ) ) {
      $nameErr = "Only letters and white space allowed";
    }
  }
  if ( empty( $_POST[ "email" ] ) ) {
    $emailErr = "Email is required";
  } else {
    $email = test_input( $_POST[ "email" ] );
    // check if e-mail address is well-formed
    if ( !filter_var( $email, FILTER_VALIDATE_EMAIL ) ) {
      $emailErr = "Invalid email format";
    }
  }

  if ( empty( $_POST[ "phone" ] ) ) {
    $comment = "";
  } else {
    $comment = test_input( $_POST[ "phone" ] );
  }

  if ( empty( $_POST[ "enquiry" ] ) ) {
    $comment = "";
  } else {
    $comment = test_input( $_POST[ "enquiry" ] );
  }

}


// Create the email and send the message
$destination = "[email protected]"; 
$subject = "Website Contact Form Enquiry:  $name";
$body = "You have received a new message from your website contact form.\\n\\n"."Here are the details:\\n\\nName: $name\\n\\nEmail: $email\\n\\nPhone: $phone\\n\\nEnquiry:\\n$enquiry";

$header = "From: [email protected]\\n"; 
$headers   = array();
$headers[] = "MIME-Version: 1.0";
$headers[] = "Content-type: text/plain; charset=iso-8859-1";
$headers[] = "From: " . $fromAddress;
$headers[] = "Subject: " . $subject;
$headers[] = "X-Mailer: PHP/".phpversion();

mail($destination, $subject, $message, implode("\r\n", 
$headers));

// mail($to,$subject,$msg,$headers);
echo "Email successfully sent.";

?>

HTML 格式：

 <form id="contact-form" method="post" action="/contact.php" role="form">
          <div class="messages"></div>
          <div class="controls">
               <div class="row">
              <div class="col-md-10">
                   <div class="form-group">
                  <input id="form_name" type="text" name="name" class="form-control" placeholder="Name*" required="required" data-error="Your name is required." >
                  <div class="help-block with-errors"></div>
                </div>
                 </div>
              <div class="col-md-10">
                   <div class="form-group">
                  <input id="form_email" type="email" name="email" class="form-control" placeholder="Email*" required="required" data-error="Valid email is required." >
                  <div class="help-block with-errors"></div>
                </div>
                 </div>
              <div class="col-md-10">
                   <div class="form-group">
                  <input id="form_phone" type="text" name="phone" class="form-control" placeholder="Phone" >
                  <div class="help-block with-errors"></div>
                </div>
                 </div>
            </div>
               <div class="row">
              <div class="col-md-10">
                   <div class="form-group">
                  <textarea id="form_enquiry" name="enquiry" class="form-control" placeholder="Enquiry*" rows="6" required="required"  data-error="Please, leave us a message."></textarea>
                  <div class="help-block with-errors"></div>
                </div>
                 </div>
              <div class="col-md-12">
                   <input class="btn btn-large btn-primary centre mt-10" type="submit" value="Submit" >

                 </div>
            </div>
               
             </div>
        </form>

我已按照其他人的指示使表单正常工作，但所做的更改仍然会出现错误。 这是一个简单的形式，但我似乎对我做错了什么缺乏了解。 请帮助我。

Answer 1

如果您查看发送邮件的行，这是一个硬行结尾，将 $headers 推到新行上吗？这将调用 500 错误。

查看 /var/log/apache2/error.log（如果您使用的是 Debian）或 /var/log/httpd/error.log（如果使用的是 RHEL 或类似系统）。

您的代码存在许多问题，但首先关注快乐的道路，然后让事情正常运行。