我已经将这个php编码用于我最近用于我们客户联系页面的联系表单，当我测试页面时，单击提交按钮会出现此错误：
尝试使用ErrorDocument处理请求时遇到HTML
<form action="contact.php" method="post" name="contact_form" onSubmit="return validate(this);" >
<div class="contact-form-field cnt-field1">
<label>Name:</label>
<input type="text" name="name" class="contact-form-input">
</div>
<div class="contact-form-field cnt-field1 cnt-marrght">
<label>Last Name:</label>
<input type="text" name="l_name" class="contact-form-input">
</div>
<div class="contact-form-field">
<label>Email:</label>
<input type="text" name="email" class="contact-form-input">
</div>
<div class="contact-form-field">
<label>Message:</label>
<textarea class="contact-form-message" name="message"></textarea>
</div>
<input type="submit" class="contact-send-btn" value="Send">
</form>
PHP
<?php
@extract($_POST);
$mailto="motaalmosleh@live.com";
//$mailto="name@domain.com"; //change e-mail address
$subject="New Request From NARTC Website";
$from = "From:";
$from.=$_POST['email'];
$headeruser="Mime-Version: 1.0\r\n";
$headeruser.= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headeruser .= "From: $req_txt_first_name <".$email.">" . "\r\n"; //change e-mail address
$message="<html>
<head>
<style>.email {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
text-align:left;
padding-left:10px;
color:#000000;
}
.text{
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 12px;
font-weight:bold;
text-align:left;
padding-left:6px;
color:#000000;
}
td{
vertical-align:top;
}
</style>
<meta http-equiv='Content-Type' content='text/html; charset=iso-8859-1'/>
</head>
<body>
<table width='100%' align='center' border='0' cellpadding='0' cellspacing='0'>
<tr><td colspan='2' class='email'></td></tr>
<tr> <td colspan='2'> </td></tr>
<tr><td colspan='2'> </td></tr>
<tr>
<td colspan='2' class='email'> New Query Submited ! :</td>
</tr>
<tr><td colspan='2'> </td></tr>
<tr>
<td class='text' width='34%'> <b>Name : </b></td>
<td class='email' width='66%'> ".stripslashes(htmlentities($name))."</td>
</tr>
<tr>
<td class='text'> <b>Last Name : </b></td>
<td class='email'> ".stripslashes(htmlentities($l_name))."</td>
</tr>
<tr>
<td class='text'> <b>Comment : </b></td>
<td class='email'> ".stripslashes(htmlentities($email))."</td>
</tr>
<tr>
<td class='text'> <b>Message : </b></td>
<td class='email'> ".stripslashes(htmlentities($message))."</td>
</tr>
<tr>
<tr><td colspan='2'> </td></tr>
</table>
</body>
</html>";
mail($mailto,$subject,$message,$headeruser)or die(error);?>
<script type="text/javascript">
alert("Your message sent successfuly");
window.location.replace('<?=$_SERVER['HTTP_REFERER'];?>');
</script>
JS
<script>
function trim(str)
{
return str.replace(/^\s*|\s*$/g,"");
}
function validate_email(email)
{
var rxp =/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})$/;
if(rxp.test(email)!=true)
{
return false;
}
else
{
return true;
}
}
function validate()
{
if (trim(document.contact_form.name.value) == "")
{
alert("\nPlease Enter Name.")
document.contact_form.name.focus();
return false;
}
if (trim(document.contact_form.l_name.value) == "")
{
alert("\nPlease Enter Last Name.")
document.contact_form.l_name.focus();
return false;
}
if (trim(document.contact_form.email.value) == "")
{
alert("\nPlease Email Address.")
document.contact_form.email.focus();
return false;
}
if (trim(document.contact_form.email.value) != "")
{
if(validate_email(document.contact_form.email.value) == false)
{
alert("\nPlease enter valid email address.")
document.contact_form.email.focus();
return false;
}
}
if (trim(document.contact_form.message.value) == "")
{
alert("\nPlease Enter Message.")
document.contact_form.message.focus();
return false;
}
}
</script>