PHP combines the web uploader plug-in to upload files in parts, _PHP tutorial

<!--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"}');