[英]ajax file cannot upload file in php email form
我的ajax文件有問題。 ajax文件不適用於php表單。 當我運行代碼時,它顯示錯誤file_get_content錯誤,文件名為空。
php代碼正常運行。 但是ajax文件無法傳輸文件字段值。 因此該文件無法與郵件一起附加。
它顯示錯誤:文件名為空
請幫助我通過ajax文件傳遞文件字段值。
<div>
<form method="post" enctype="multipart/form-data" name="form1" id="form1" action="contactus.php" onsubmit="xmlhttpPost('contactus.php', 'form1', 'Myresult', ''); return false;">
Name:<input name="name1" type="text" value="" />
Address:<input name="address1" type="text" value="" />
Phone:<input name="phone1" type="text" value=""/>
Email: <input name="email1" type="text" value="" />
File:<input name="file" type="file" size="35" id="file" />
Links:<input name="links1" type="text" value="" />
Subject:<input name="subject1" type="text" value="" />
Location:<select name="location">
<option value="" selected="selected">--Select--</option>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
Comments:<textarea name="comment1" ></textarea>
<input name="submit" id="submit" type="submit"/>
<div id="Myresult"></div>
</form>
</div>
php表格(contactus.php)
<?php
if(isset($_POST['submit']))
{
$name=$_POST['name1'];
$address=$_POST['address1'];
$phone=$_POST['phone1'];
$email=$_POST['email1'];
$subject=$_POST['subject1'];
$location=$_POST['location'];
$comment=$_POST['comment1'];
$links=$_POST['links1'];
$to='mail@mail.com';
$message .= "\nName: ".$name."\n\n";
$message .= "Address: ".$address."\n\n";
$message .= "Phone: ".$phone."\n\n";
$message .= "Email: ".$email."\n\n";
$message .= "Links: ".$links."\n\n";
$message .= "Location: ".$location."\n\n";
$message .= "Comments:\n\n ".$comment."\n";
$attachment = chunk_split(base64_encode(file_get_contents($_FILES['file']['tmp_name'])));
$filename = $_FILES['file']['name'];
$filetype = $_FILES['file']['type'];
$boundary =md5(date('r', time()));
$headers = "From: $name <$email>\r\nReply-To: $name <$email>";
$headers .= "\r\nMIME-Version: 1.0\r\nContent-Type: multipart/mixed; boundary=\"_1_$boundary\"";
$message="This is a multi-part message in MIME format.
--_1_$boundary
Content-Type: multipart/alternative; boundary=\"_2_$boundary\"
--_2_$boundary
Content-Type: text/plain; charset=\"iso-8859-1\"
Content-Transfer-Encoding: 7bit
$message
--_2_$boundary--
--_1_$boundary
Content-Type: $filetype; name=\"$filename\"
Content-Transfer-Encoding: base64
Content-Disposition: attachment
$attachment
--_1_$boundary--";
mail($to,$subject,$message,$headers);
print 'Thanks, your message sent!';
}
?>
ajax.js
function xmlhttpPost(strURL,formname,responsediv,responsemsg) {
var xmlHttpReq = false;
var self = this;
// Xhr per Mozilla/Safari/Ie7
if (window.XMLHttpRequest) {
self.xmlHttpReq = new XMLHttpRequest();
}
// per tutte le altre versioni di IE
else if (window.ActiveXObject) {
self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
}
self.xmlHttpReq.open('POST', strURL, true);
self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
self.xmlHttpReq.onreadystatechange = function() {
if (self.xmlHttpReq.readyState == 4) {
// Quando pronta, visualizzo la risposta del form
updatepage(self.xmlHttpReq.responseText,responsediv);
}
else{
// In attesa della risposta del form visualizzo il msg di attesa
updatepage(responsemsg,responsediv);
}
}
self.xmlHttpReq.send(getquerystring(formname));
}
function getquerystring(formname) {
var form = document.forms[formname];
var qstr = "";
function GetElemValue(name, value) {
qstr += (qstr.length > 0 ? "&" : "")
+ escape(name).replace(/\+/g, "%2B") + "="
+ escape(value ? value : "").replace(/\+/g, "%2B");
//+ escape(value ? value : "").replace(/\n/g, "%0D");
}
var elemArray = form.elements;
for (var i = 0; i < elemArray.length; i++) {
var element = elemArray[i];
var elemType = element.type.toUpperCase();
var elemName = element.name;
if (elemName) {
if (elemType == "TEXT"
|| elemType == "TEXTAREA"
|| elemType == "PASSWORD"
|| elemType == "BUTTON"
|| elemType == "RESET"
|| elemType == "SUBMIT"
|| elemType == "FILE"
|| elemType == "IMAGE"
|| elemType == "HIDDEN")
GetElemValue(elemName, element.value);
else if (elemType == "CHECKBOX" && element.checked)
GetElemValue(elemName,
element.value ? element.value : "On");
else if (elemType == "RADIO" && element.checked)
GetElemValue(elemName, element.value);
else if (elemType.indexOf("SELECT") != -1)
for (var j = 0; j < element.options.length; j++) {
var option = element.options[j];
if (option.selected)
GetElemValue(elemName,
option.value ? option.value : option.text);
}
}
}
return qstr;
}
function updatepage(str,responsediv){
document.getElementById(responsediv).innerHTML = str;
}
問題:
1)標准AJAX無法上傳文件。 通常的解決方法是在隱藏的<iframe>
構建表單,然后在其中執行標准的POST上傳。
2)您的代碼僅假定已執行並成功上傳。 坦率地說,這是愚蠢的。 與用戶打交道時永遠不要假設成功。 始終做好最壞的准備。 您的代碼至少應具有以下內容:
if ($_FILES['fieldname']['error'] !== UPLOAD_ERR_OK) {
die("File upload failed with error code " . $_FILES['fieldname']['error']);
}
如果您有類似的問題,則可能會得到錯誤代碼4(可能是錯誤代碼)-沒有文件上傳,因為無法通過AJAX完成上傳。 錯誤代碼在此處定義: http : //www.php.net/manual/zh/features.file-upload.errors.php
3)您正在建立自己的啞劇電子郵件,這不是最容易解決的問題。 為什么不嘗試使用Swiftmailer或PHPMailer? 兩者都使得發送帶有html,嵌入式附件等的MIME電子郵件幾乎是微不足道的。 幾乎所有的MIME-建築規范將減少到在任一圖書館單行 。
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