php 在服务器端处理 plupload 的分块上传
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Handling plupload's chunked uploads on the server-side
提问by TMS
When I use plupload to chunk files (setting option chunk_size), I get a separate PHP request for each chunk. Looking at $_FILESvariable, each chunk is of type "application/octet-stream".
当我使用 plupload 对文件进行分块（设置选项chunk_size）时，我会收到每个分块的单独 PHP 请求。查看$_FILES变量，每个块的类型都是"application/octet-stream"。
Is there any simple, standard and comfortable way how to combine these pieces in PHP at server-side?
是否有任何简单、标准和舒适的方法如何在服务器端在 PHP 中组合这些部分？
With sanity guaranteed (e.g. when one of the pieces is missing etc.).
保证健全（例如，当其中一件丢失时等）。
采纳答案by TMS
In the end I used the code from official example bundled with plupload-1.5.2 (examples/upload.php):
最后，我使用了与 plupload-1.5.2 (examples/upload.php) 捆绑在一起的官方示例中的代码：
http://github.com/moxiecode/plupload/blob/master/examples/upload.php
http://github.com/moxiecode/plupload/blob/master/examples/upload.php
回答by Kris Erickson
Here is the way to parse the chunks, and store the result in $upload_file (change $uploaded_file to match what you need).
这是解析块的方法，并将结果存储在 $upload_file 中（更改 $uploaded_file 以匹配您需要的内容）。
$uploaded_file = '/tmp/uploadFile.jpg';
$chunks = isset($_POST["chunks"]) ? $_POST["chunks"] : 0;
// If we have a chunked operation...
if ($chunks > 0)
{
// Get the chunk number...
$chunk = isset($_POST["chunk"]) ? $_POST["chunk"] : 0;
if ($chunk == 0)
{
if (!isset($_SESSION['last_chunk']))
{
$_SESSION['last_chunk'] = array();
}
$_SESSION['last_chunk'][$_POST['unique_id']] = $chunk;
}
else
{
if ($_SESSION['last_chunk'][$_POST['unique_id']] != $chunk + 1)
{
die('{"jsonrpc" : "2.0", "error" : {"code": 192, "message": "Uploaded chunks out of sequence. Try again."}, "id" : "id"}');
}
}
$tmp_dir = sys_get_temp_dir();
// We need a unique filename to identify the file...
$tmp_filename = $tmp_dir.$_POST['unique_id'];
// If it is the first chunk we have to create the file, othewise we append...
$out_fp = fopen($tmp_filename, $chunk == 0 ? "wb" : "ab");
// The file we are reading from...
$uploaded_file = $_FILES['file']['tmp_name'];
$in_fp = fopen($uploaded_file, "rb");
// Copy the chunk that was uploaded, into the file we are uploading...
while ($buff = fread($in_fp, 4096))
{
fwrite($out_fp, $buff);
}
fclose($out_fp);
fclose($in_fp);
// If we are the last chunk copy the file to the final location and continue on...
if ($chunk == $chunks - 1)
{
copy($tmp_filename, $uploaded_file);
unset($_SESSION['last_chunk'][$_POST['unique_id']]);
if (count($_SESSION['last_chunk']) == 0)
{
unset($_SESSION['last_chunk']);
}
}
else
{
// Otherwise report the result to the uploader...
echo'{"jsonrpc" : "2.0", "result" : null, "id" : "id"}';
}
}
