jquery文件上传和调整大小不能在服务器上运行的图像

Question

我使用以下jQuery文件上传插件上传图像文件并调整大小它在localhost中工作正常。

在服务器中尝试时，我收到错误：

<?php
$output_dir = "../images/img_user/";
if(isset($_FILES["file"]) && !empty($_FILES["file"]))
{
$ret = array();
$error =$_FILES["file"]["error"];
if(!is_array($_FILES["file"]["name"])) //single file
{
$fileName = $_FILES["file"]["name"];
move_uploaded_file($_FILES["file"]["tmp_name"],$output_dir.$fileName);
//img resize
require 'imgclass.php';
$resize_image = new Zebra_Image();
$resize_image->preserve_aspect_ratio = true;
$resize_image->source_path = $output_dir.$fileName;
$ext = trim("$fileName");
$resize_image->target_path = '../images/img_user/'.$ext;
if (!$resize_image->resize(128, 128, ZEBRA_IMAGE_NOT_BOXED, 1))
{
// if there was an error, let's see what the error is about
switch ($resize_image->error) {
case 1:
$custom_error= array();
$custom_error['jquery-upload-file-error']="Image file could not be found!";
echo json_encode($custom_error);
die();
case 2:
$custom_error= array();
$custom_error['jquery-upload-file-error']="Image file is not readable!";
echo json_encode($custom_error);
die();
case 3:
$custom_error= array();
$custom_error['jquery-upload-file-error']="Could not write target file!";
echo json_encode($custom_error);
die();
case 4:
$custom_error= array();
$custom_error['jquery-upload-file-error']="Unsupported image file format!";
echo json_encode($custom_error);
die();
case 5:
$custom_error= array();
$custom_error['jquery-upload-file-error']="Unsupported target file format!";
echo json_encode($custom_error);
die();
case 6:
$custom_error= array();
$custom_error['jquery-upload-file-error']="GD library version does not support target file format!";
echo json_encode($custom_error);
die();
case 7:
$custom_error= array();
$custom_error['jquery-upload-file-error']="GD library is not installed!";
echo json_encode($custom_error);
die();
}//end switch
}//end resize error
//end resize
$ret[]= $fileName;
}
echo json_encode($ret);
}
?>

我的代码如下：

{{1}}

似乎它试图在整个文件从本地桌面上传到服务器之前调整图像大小。我们怎样才能确保仅在整个文件上传后才进行调整大小？似乎这是问题，因为它在localhost中正常工作。专家要求帮助。