upload.php

<?php 
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");

// 5 minutes execution time
@set_time_limit(5 * 60);
$folder = isset($_POST['folder']) ? $_POST['folder'] : '';
$thumSize = isset($_POST['thumSize']) ? json_decode($_POST['thumSize']) : '';

$targetDir = 'uploads/'.$folder.'/full-size';
$cleanupTargetDir = true; // Remove old files
$maxFileAge = 5 * 3600; // Temp file age in seconds

function tinyMkDir($dirs){
	$dirs = explode('/', $dirs);
	$i = '';
	foreach($dirs as $dir){
		$i .= $dir.'/';
		if (!file_exists($i)) {
			@mkdir($i);
		}
	}
}

// Create target dir
if (!file_exists($targetDir)) {
	tinyMkDir($targetDir);
}

// Get a file name
if (isset($_REQUEST["name"])) {
	$fileName = $_REQUEST["name"];
} elseif (!empty($_FILES)) {
	$fileName = $_FILES["file"]["name"];
} else {
	$fileName = uniqid("file_");
}
$filePath = $targetDir . DIRECTORY_SEPARATOR . $fileName;

// Chunking might be enabled
$chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;
$chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 0;


// Remove old temp files	
if ($cleanupTargetDir) {
	if (!is_dir($targetDir) || !$dir = opendir($targetDir)) {
		die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "Failed to open temp directory."}, "id" : "id"}');
	}

	while (($file = readdir($dir)) !== false) {
		$tmpfilePath = $targetDir . DIRECTORY_SEPARATOR . $file;

		// If temp file is current file proceed to the next
		if ($tmpfilePath == "{$filePath}.part") {
			continue;
		}

		// Remove temp file if it is older than the max age and is not the current file
		if (preg_match('/\.part$/', $file) && (filemtime($tmpfilePath) < time() - $maxFileAge)) {
			@unlink($tmpfilePath);
		}
	}
	closedir($dir);
}	


// Open temp file
if (!$out = @fopen("{$filePath}.part", $chunks ? "ab" : "wb")) {
	die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}');
}

if (!empty($_FILES)) {
	if ($_FILES["file"]["error"] || !is_uploaded_file($_FILES["file"]["tmp_name"])) {
		die('{"jsonrpc" : "2.0", "error" : {"code": 103, "message": "Failed to move uploaded file."}, "id" : "id"}');
	}

	// Read binary input stream and append it to temp file
	if (!$in = @fopen($_FILES["file"]["tmp_name"], "rb")) {
		die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}');
	}
} else {	
	if (!$in = @fopen("php://input", "rb")) {
		die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}');
	}
}

while ($buff = fread($in, 4096)) {
	fwrite($out, $buff);
}

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

// Check if file has been uploaded
if (!$chunks || $chunk == $chunks - 1) {
	// Strip the temp .part suffix off 
	if(file_exists($filePath)){
		$fileName = time() . $fileName;
	}
	rename("{$filePath}.part", $targetDir . DIRECTORY_SEPARATOR . $fileName);
	
	//-- make thumbnail of image
	include('resource/php/class.upload.php');
	$handle = new Upload($targetDir . DIRECTORY_SEPARATOR . $fileName);
	
	$handle->file_auto_rename 	   = false;
	$handle->image_resize          = true;
	$handle->image_ratio_crop      = true;
	$handle->image_x               = $thumSize->w;
	$handle->image_y               = $thumSize->h;
	
	$handle->Process(str_replace('full-size', 'thumbs', $targetDir));
	
	
	echo json_encode(array(
		"result" 	=> $_REQUEST['chunk'].'-'.$_REQUEST['chunks'], 
		"filename" 	=> $fileName,
		"folder"	=> $folder
	));     
}else{
	die('{"status": true}');         
}