PHP-将上传的图像保存到服务器

问题描述

我正在尝试使用PHP将iPhone上载的图像保存到服务器.我正在使用ASIHTTPRequest处理数据请求.这是我的iPhone代码:

I am trying to save an uploaded image from an iPhone to a server using PHP. I am using ASIHTTPRequest to handle the data request. This is my iPhone code:

[request setPostValue:someString forKey:@"string1"];
[request setPostValue:anotherString forKey:@"string2"];
[request addData:[NSData dataWithData:UIImageJPEGRepresentation(anImage, 0.9)]
         withFileName:@"img.jpg" andContentType:@"image/jpeg" forKey:@"img"];

[request startSynchronous];

在服务器端，我目前正在使用以下PHP代码尝试将图像保存到服务器上的文件夹中:

On the server side, I am using this PHP code currently to try saving the image to a folder on my server:

print_r($_FILES);

$folder = 'upload/';
$image_path = basename($_FILES['img']['name']);
echo $folder . $image_path . "\n";
if (move_uploaded_file($_FILES['img']['tmp_name'], $folder . $image_path)) {
    echo 'ok!';
}
else {
    echo 'fail !';
}

字符串已上传得很好，并且当我print_r()时，我按预期看到了图像数组的内容，但是由于某些原因，当试图保存图像时，我却收到了失败！"的消息.打印到控制台.怎么了?

The strings are uploaded just fine and when I print_r() i see the contents of the image array as I expect, but for some reason when trying to save the image, i am getting "fail !" printed to the console. What is wrong here?

谢谢.

推荐答案

在移动图片之前尝试以下步骤

Try the following step before you move your image

if(!is_dir($folder))
{
   echo "Folder does not exist" ;

   if(!mkdir($folder))
   {
      echo "Attempt to create folder failed" ;
   }
}
else if(!is_writable($folder))
{
   echo "Folder nto writeable" ;

   if(!chmod($folder, 0755))
   {
        echo "Attempt to make writeable failed" ;
   }
}
 else {

   if (move_uploaded_file($_FILES['img']['tmp_name'], $folder . $image_path)) {
      echo 'ok!';
   }
   else {
    echo 'fail !';
   }
}

您得到什么???

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