我有一个允许上传文件的html表单。我可以让它发送正确的信息，但我收到的不是jpg或pdf格式的文件，而是一封充满二进制的电子邮件。有人能解释为什么会发生这种情况吗？
我的html
<form name="htmlform" method="post" enctype="multipart/form-data" action="../html_form_send.php">
<table width="450px">
</tr>
<tr>
<td valign="top">
<label for="first_name">First Name *</label>
</td>
<td valign="top">
<input type="text" name="first_name" maxlength="50" size="30">
</td>
</tr>
<tr>
<td valign="top">
<label for="last_name">Last Name *</label>
</td>
<td valign="top">
<input type="text" name="last_name" maxlength="50" size="30">
</td>
</tr>
<tr>
<td valign="top">
<label for="email">Email Address *</label>
</td>
<td valign="top">
<input type="text" name="email" maxlength="80" size="30">
</td>
</tr>
<tr>
<td valign="top">
<label for="telephone">Telephone Number</label>
</td>
<td valign="top">
<input type="text" name="telephone" maxlength="30" size="30">
</td>
</tr>
<tr>
<td valign="top">
<label for="service">Service Required</label>
</td>
<td valign="top">
<input type="text" name="service" maxlength="30" size="30">
</td>
</tr>
<tr>
<td valign="top">
<label for="file">If you have any drawings or images to submit please do so</label>
</td>
<td valign="top">
<input type="file" name="attachment" ></textarea>
</td>
</tr>
<tr>
<td valign="top">
<label for="comments">Comments *</label>
</td>
<td valign="top">
<textarea name="comments" maxlength="1000" cols="25" rows="6"></textarea>
</td>
</tr>
<tr>
<td colspan="2" style="text-align:center">
<input type="submit" value="Submit">
</td>
</tr>
</table>
</form>
我的Php
<?php
if(isset($_POST['email'])) {
// CHANGE THE TWO LINES BELOW
$email_to = "matthew.p@cawthornes.co.uk";
$email_subject = "website html form submissions";
function died($error) {
// your error code can go here
echo "We are very sorry, but there were error(s) found with the form you submitted. ";
echo "These errors appear below.<br /><br />";
echo $error."<br /><br />";
echo "Please go back and fix these errors.<br /><br />";
die();
}
// validation expected data exists
if(!isset($_POST['first_name']) ||
!isset($_POST['last_name']) ||
!isset($_POST['email']) ||
!isset($_POST['telephone']) ||
!isset($_POST['service']) ||
!isset($_POST['comments'])){
died('We are sorry, but there appears to be a problem with the form you submitted.');
}
$first_name = $_POST['first_name']; // required
$last_name = $_POST['last_name']; // required
$email_from = $_POST['email']; // required
$telephone = $_POST['telephone']; // not required
$service = $_POST['service']; // not required
$comments = $_POST['comments']; // required
/* GET File Variables */
$tmpName = $_FILES['attachment']['tmp_name'];
$fileType = $_FILES['attachment']['type'];
$fileName = $_FILES['attachment']['name'];
$error_message = "";
$email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+.[A-Za-z]{2,4}$/';
if(!preg_match($email_exp,$email_from)) {
$error_message .= 'The Email Address you entered does not appear to be valid.<br />';
}
$string_exp = "/^[A-Za-z .'-]+$/";
if(!preg_match($string_exp,$first_name)) {
$error_message .= 'The First Name you entered does not appear to be valid.<br />';
}
if(!preg_match($string_exp,$last_name)) {
$error_message .= 'The Last Name you entered does not appear to be valid.<br />';
}
if(strlen($comments) < 2) {
$error_message .= 'The Comments you entered do not appear to be valid.<br />';
}
if(strlen($error_message) > 0) {
died($error_message);
}
$email_message = "Form details below.nn";
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);
}
if (file($tmpName)) {
/* Reading file ('rb' = read binary) */
$file = fopen($tmpName,'rb');
$data = fread($file,filesize($tmpName));
fclose($file);
/* a boundary string */
$randomVal = md5(time());
$mimeBoundary = "==Multipart_Boundary_x{$randomVal}x";
/* Header for File Attachment */
$headers .= "nMIME-Version: 1.0n";
$headers .= "Content-Type: multipart/mixed;n" ;
$headers .= " boundary="{$mimeBoundary}"";
/* Multipart Boundary above message */
$message = "This is a multi-part message in MIME format.nn" .
"--{$mimeBoundary}n" .
"Content-Type: text/plain; charset="iso-8859-1"n" .
"Content-Transfer-Encoding: 7bitnn" .
$message . "nn";
/* Encoding file data */
$data = chunk_split(base64_encode($data));
}
$email_message .= "First Name: ".clean_string($first_name)."n";
$email_message .= "Last Name: ".clean_string($last_name)."n";
$email_message .= "Email: ".clean_string($email_from)."n";
$email_message .= "Telephone: ".clean_string($telephone)."n";
$email_message .= "Service: ".clean_string($service)."n";
$email_message .= "Comments: ".clean_string($comments)."n";
$email_message .= "attachment: ".clean_string($file)."n";
/* Adding attchment-file to message*/
$email_message .= "--{$mimeBoundary}n" .
"Content-Type: {$fileType};n" .
" name="{$fileName}"n" .
"Content-Transfer-Encoding: base64nn" .
$data . "nn" .
"--{$mimeBoundary}--n";
// create email headers
$headers = 'From: '.$email_from."rn".
'Reply-To: '.$email_from."rn" .
'X-Mailer: PHP/' . phpversion();
@mail($email_to, $email_subject, $email_message, $headers);
function IsInjected($str)
{
$injections = array('(n+)',
'(r+)',
'(t+)',
'(%0A+)',
'(%0D+)',
'(%08+)',
'(%09+)'
);
$inject = join('|', $injections);
$inject = "/$inject/i";
if(preg_match($inject,$str))
{
return true;
}
else
{
return false;
}
}
?>
<!-- place your own success html below -->
<h3>Thank you for contacting us. We will be in touch with you very soon.</
<?php
}
die();
?>
将Content-Disposition: attachment添加到电子邮件附件部分的标题中。