有沒有人用過這個？ （JQuery上傳）

Question

我一直在嘗試在http://tuts.wtfdiary.com/2012/06/file-upload-in-php-without-refreshing.html上使用本教程，並且我沒有將它運用到我自己的站點中。我甚至一字不提地複製了腳本，並且仍然沒有任何內容 - 有沒有任何理由說明這可能無效？我甚至將.live更改爲.on並更改了JQuery版本。我想知道是否與提交有關？謝謝

這裏是代碼我使用：

<div id="formArea" class="userProfileFormWidth"> 
         <script type="text/javascript" > 
         $(document).ready(function() { 
         $('#photoimg').live('change', function() 
         { 
         $("#preview").html(''); 
         $("#current").hide(); 
         $("#preview").html('<img src="ajax-loader.gif" alt="Uploading file...."/>'); 
         $("#imageform").ajaxForm({ 
         target: '#preview' 
         }).submit(); 
         }); 
         }); 
         </script> 
         <form id="imageform" method="post" enctype="multipart/form-data" action='update-user-profile.php'> 

         Upload image from your computer: <input type="file" name="photoimg" id="photoimg" /><br><br/> 

         </form> 
         <div id='preview'></div> 
        </div> 

更新用戶profile.php

<?php 
session_start(); 
include("php/db-connect.php"); 

$get_user_sql = "SELECT * FROM members WHERE username = '$user_username'"; 
$get_user_res = mysqli_query($con, $get_user_sql); 
while($user = mysqli_fetch_array($get_user_res)){ 
    $user_id = $user['id']; 
} 
$path = "uploads/"; 
$valid_formats = array("jpg", "png", "gif"); 
if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST") 
{ 
$name = $_FILES['photoimg']['name']; 
$size = $_FILES['photoimg']['size']; 
if(strlen($name)) 
{ 
list($txt, $ext) = explode(".", $name); 
if(in_array($ext,$valid_formats)) 
{ 
if($size<(1024*1024)) 
{ 
$actual_image_name = time().substr(str_replace(" ", "_", $txt), 5).".".$ext; 
$tmp = $_FILES['photoimg']['tmp_name']; 
if(move_uploaded_file($tmp, $path.$actual_image_name)) 
{ 
$upload_avatar_sql = "UPDATE profile_members SET avatar='$actual_image_name' WHERE id='$user_id'"; 
$upload_avatar_res = mysqli_query($con, $upload_avatar_sql)or die(mysqli_error()); 
echo "<img src='uploads/".$actual_image_name."' class='preview'>"; 
} 
else 
echo "failed"; 
} 
else 
echo "Image file size max 1024k"; 
} 
else 
echo "Invalid file format.."; 
} 
else 
echo "No file selected"; 
exit; 
} 

?> 

Answer 1

有任何錯誤消息？嘗試查看/調試您的代碼，只需按f12，然後在控制檯中單擊以查看發生了什麼問題