php结合web uploader插件实现分片上传文件

<!--引入CSS--><link rel="stylesheet" type="text/css" href="webuploader文件夹/webuploader.css"><!--引入JS--><script type="text/javascript" src="webuploader文件夹/webuploader.js"></script>

<div id="uploader" class="wu-example">  <!--用来存放文件信息-->  <div id="thelist" class="uploader-list"></div>  <div class="btns">    <div id="picker">选择文件</div>    <button id="ctlBtn" class="btn btn-default">开始上传      </button>  </div>  </div>

jQuery(function() {    $list = $('#thelist'),      $btn = $('#ctlBtn'),      state = 'pending',      uploader;    uploader = WebUploader.create({      // 不压缩image      resize: false,      // swf文件路径      swf: 'uploader.swf',      // 文件接收服务端。      server: upload.php,      // 选择文件的按钮。可选。      // 内部根据当前运行是创建，可能是input元素，也可能是flash.      pick: '#picker',      chunked: true,      chunkSize:2*1024*1024,      auto: true,      accept: {        title: 'Images',        extensions: 'gif,jpg,jpeg,bmp,png',        mimeTypes: 'image/*'      }    });

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");    if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {      exit; // finish preflight CORS requests here    }    if ( !empty($_REQUEST[ 'debug' ]) ) {      $random = rand(0, intval($_REQUEST[ 'debug' ]) );      if ( $random === 0 ) {        header("HTTP/1.0 500 Internal Server Error");        exit;      }    }    // header("HTTP/1.0 500 Internal Server Error");    // exit;    // 5 minutes execution time    @set_time_limit(5 * 60);    // Uncomment this one to fake upload time    // usleep(5000);    // Settings    // $targetDir = ini_get("upload_tmp_dir") . DIRECTORY_SEPARATOR . "plupload";    $targetDir = 'uploads'.DIRECTORY_SEPARATOR.'file_material_tmp';    $uploadDir = 'uploads'.DIRECTORY_SEPARATOR.'file_material';    $cleanupTargetDir = true; // Remove old files    $maxFileAge = 5 * 3600; // Temp file age in seconds    // Create target dir    if (!file_exists($targetDir)) {      @mkdir($targetDir);    }    // Create target dir    if (!file_exists($uploadDir)) {      @mkdir($uploadDir);    }    // Get a file name    if (isset($_REQUEST["name"])) {      $fileName = $_REQUEST["name"];    } elseif (!empty($_FILES)) {      $fileName = $_FILES["file"]["name"];    } else {      $fileName = uniqid("file_");    }    $oldName = $fileName;    $filePath = $targetDir . DIRECTORY_SEPARATOR . $fileName;    // $uploadPath = $uploadDir . DIRECTORY_SEPARATOR . $fileName;    // Chunking might be enabled    $chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;    $chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 1;    // Remove old temp files    if ($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 == "{$filePath}_{$chunk}.part" || $tmpfilePath == "{$filePath}_{$chunk}.parttmp") {          continue;        }        // Remove temp file if it is older than the max age and is not the current file        if (preg_match('//.(part|parttmp)$/', $file) && (@filemtime($tmpfilePath) < time() - $maxFileAge)) {          @unlink($tmpfilePath);        }      }      closedir($dir);    }    // Open temp file    if (!$out = @fopen("{$filePath}_{$chunk}.parttmp", "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($in);    rename("{$filePath}_{$chunk}.parttmp", "{$filePath}_{$chunk}.part");    $index = 0;    $done = true;    for( $index = 0; $index < $chunks; $index++ ) {      if ( !file_exists("{$filePath}_{$index}.part") ) {        $done = false;        break;      }    }    if ( $done ) {      $pathInfo = pathinfo($fileName);      $hashStr = substr(md5($pathInfo['basename']),8,16);      $hashName = time() . $hashStr . '.' .$pathInfo['extension'];      $uploadPath = $uploadDir . DIRECTORY_SEPARATOR .$hashName;      if (!$out = @fopen($uploadPath, "wb")) {        die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}');      }      if ( flock($out, LOCK_EX) ) {        for( $index = 0; $index < $chunks; $index++ ) {          if (!$in = @fopen("{$filePath}_{$index}.part", "rb")) {            break;          }          while ($buff = fread($in, 4096)) {            fwrite($out, $buff);          }          @fclose($in);          @unlink("{$filePath}_{$index}.part");        }        flock($out, LOCK_UN);      }      @fclose($out);      $response = [        'success'=>true,        'oldName'=>$oldName,        'filePaht'=>$uploadPath,        'fileSize'=>$data['size'],        'fileSuffixes'=>$pathInfo['extension'],        'file_id'=>$data['id'],        ];      die(json_encode($response));    }   // Return Success JSON-RPC response    die('{"jsonrpc" : "2.0", "result" : null, "id" : "id"}');