Codeigniter do_upload在 生产环境 服务器中不响应

我创建了一个将上传某些文件类型的页面 . 它在我的本地开发中工作正常但不在 生产环境 中 . 它不会传递do_upload（）函数 . 除此之外什么也没有显示出来 .

$path = 'uploads';
echo 'path: '. $path .' <br>'; 

//-- config for uplaod --
$configUpdload['upload_path']   = $path ;
$configUpdload['allowed_types'] = 'gif|jpg|png|xls|xlsx|pdf';
$configUpdload['max_size']   = '4000'; //size in kilobytes
$configUpdload['encrypt_name']  = TRUE;

//-- load upload library --
$this->load->library('upload');

$this->upload->initialize($configUpdload);

if ($_FILES['fileref']['name']!="")
{
    ini_set('display_errors', true);
    error_reporting(E_ALL);

    echo 'uploadAttachment<br>';

    $uploaded = $this->upload->do_upload("fileref");

    echo 'uploaded: '. $uploaded . '<br>';

    if ($uploaded == true)
    {
        echo 'uploaded data<br>';
        $inputUp = $this->upload->data();
        echo 'data: '. print_r($inputUp,true) . '<br>'; 
        $uploadInput['orig_name']   = $inputUp['orig_name'];
        $uploadInput['enc_name']    = $inputUp['file_name'];
        $uploadInput['extension']   = $inputUp['file_ext'];

        echo 'uploaded true<br>';
    }else{
        die($this->upload->display_errors());
    }
}

我尝试将upload_path更改为非现有文件夹，它显示“上传路径似乎无效” . 意味着do_upload（）确实有效吗？

uploads文件夹权限是777 .

我也试过使用绝对路径，但仍然没有显示任何传递do_upload（） .

或者与服务器有什么关系？

有谁知道发生了什么？非常感谢 .

谢谢 .

[EDIT1]

服务器的错误日志和普通日志中没有任何内容 . 我还设置$ config ['log_threshold'] = 4;没有错误日志 .

[EDIT2]

生产环境 服务器是linux下的第三方Web托管 . 我尝试了php_info（）并跟踪与上传有关的任何内容 .

file_uploads        On  On  
max_file_uploads    20  20  
pload_max_filesize  30M 30M  
upload_tmp_dir      /tmp/   /tmp/  
suhosin.upload.disallow_binary  0   0  
suhosin.upload.disallow_elf 1   1  
suhosin.upload.max_uploads  25  25  
suhosin.upload.remove_binary    0   0  
suhosin.upload.verification_script  no value

我也试过减少filesize $ configUpdload ['max_size'] = '10';但do_upload（）之后仍然没有消息 .

[Edit3]我的文件夹结构：

public_html/gtapp/
public_html/gtapp/csystem/ <- is system folder
public_html/gtapp/v1/ <- is application folder
public_html/gtapp/media/
public_html/gtapp/uploads/
public_html/gtapp/license.txt

在config.php中：

$config['base_url'] = 'http://www.example.com/gtapp/

在index.php中：

$application_folder = 'v1';

当我执行 APPPATH . 'uploads'; 以上代码时显示：

uploadAttachment
path: v1/uploads
uploaded: 
The upload path does not appear to be valid.

我试过 $path = $_SERVER['DOCUMENT_ROOT'] . '/gtapp/uploads'; 它只是显示：

uploadAttachment
path: /home/user/domains/example.com/public_html/gtapp/uploads

[Edit4]

我制作了原生PHP上传代码的原始版本，它的工作原理 . 我不认为这是一个服务器问题 . 以下是代码：

$name = 'fileref'; 

$upload_path    = './uploads/';
$allowed_types  = array("jpg", "jpeg", "gif", "png", "xls", "xlsx", "pdf");
$extension      = end(explode(".", $_FILES[$name]["name"]));
$max_size       = '4000';

if ($_FILES['fileref']['name']!="")
{
    if ((($_FILES[$name]["type"] == "image/gif")
        || ($_FILES[$name]["type"] == "image/jpeg")
        || ($_FILES[$name]["type"] == "image/pjpeg")
        || ($_FILES[$name]["type"] == "image/png")
        || ($_FILES[$name]["type"] == "image/x-png")
        || ($_FILES[$name]["type"] == "application/excel")
        || ($_FILES[$name]["type"] == "application/vnd.ms-excel")
        || ($_FILES[$name]["type"] == "application/msexcel")
        || ($_FILES[$name]["type"] == "application/pdf")
        || ($_FILES[$name]["type"] == "application/x-download"))
        && (round($_FILES[$name]["size"]/1024,2) < $max_size )
        && in_array($extension, $allowed_types))
        {

            if ($_FILES[$name]["error"] > 0)
            {
                echo $_FILES[$name]["error"]);
            }
            else
            {
                $uploadInput['orig_name']   = $_FILES[$name]["name"];
                $uploadInput['enc_name']    = sha1($_FILES[$name]["name"]);
                $uploadInput['extension']   = $_FILES[$name]["type"];

                $moved = move_uploaded_file($_FILES[$name]["tmp_name"], $upload_path . $uploadInput['enc_name'] . '.' . $extension);

                if($moved)
                    echo 'success';
                else
                    echo 'fail';

            }
        }
}