Plupload Examples: Chunking

Chunking: server-side

<?php

if (empty($_FILES) || $_FILES['file']['error']) {
	die('{"OK": 0, "info": "Failed to move uploaded file."}');
}

$chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;
$chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 0;

$fileName = isset($_REQUEST["name"]) ? $_REQUEST["name"] : $_FILES["file"]["name"];
$filePath = "uploads/$fileName";


// Open temp file
$out = @fopen("{$filePath}.part", $chunk == 0 ? "wb" : "ab");
if ($out) {
	// Read binary input stream and append it to temp file
	$in = @fopen($_FILES['file']['tmp_name'], "rb");

	if ($in) {
		while ($buff = fread($in, 4096))
			fwrite($out, $buff);
	} else
		die('{"OK": 0, "info": "Failed to open input stream."}');

	@fclose($in);
	@fclose($out);

	@unlink($_FILES['file']['tmp_name']);
} else
	die('{"OK": 0, "info": "Failed to open output stream."}');


// Check if file has been uploaded
if (!$chunks || $chunk == $chunks - 1) {
	// Strip the temp .part suffix off 
	rename("{$filePath}.part", $filePath);
}

die('{"OK": 1, "info": "Upload successful."}');

@rammanoj i think, setting the "max_retries" property to a value greater than 0 will retry to continue the file upload for x times, given that x is the value of "max_retries" you provided.