thinkphp5框架集成plupload实现图像批量上传的功能

<?php
/* 
 * 文件上传
 * 
 * Donald
 * 2017-3-21
 */
namespace app\backend\logic;
use think\Model;
class Plupupload extends Model{
  public function upload_pic($file_type="data"){
    #!! IMPORTANT: 
    #!! this file is just an example, it doesn't incorporate any security checks and 
    #!! is not recommended to be used in production environment as it is. Be sure to 
    #!! revise it and customize to your needs.
    // Make sure file is not cached (as it happens for example on iOS devices)
    header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
    header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
    header("Cache-Control: no-store, no-cache, must-revalidate");
    header("Cache-Control: post-check=0, pre-check=0", false);
    header("Pragma: no-cache");
    /* 
    // Support CORS
    header("Access-Control-Allow-Origin: *");
    // other CORS headers if any...
    if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
        exit; // finish preflight CORS requests here
    }
    */
    // 5 minutes execution time
    @set_time_limit(5 * 60);
    // Uncomment this one to fake upload time
    // usleep(5000);
    // Settings
    //重新设置上传路径
    $uploads = config('uploads_dir');
    if(!empty($file_type)){
      $uploads = $uploads .$file_type."/".date("Ymd");
    }
    $targetDir = $uploads;
    //$targetDir = 'uploads';
    $cleanupTargetDir = true; // Remove old files
    $maxFileAge = 5 * 3600; // Temp file age in seconds
    // Create target dir
    if (!file_exists($targetDir)) {
        @mkdir($targetDir);
    }
    // Get a file name
    if (isset($_REQUEST["name"])) {
        $fileName = $_REQUEST["name"];
    } elseif (!empty($_FILES)) {
        $fileName = $_FILES["file"]["name"];
    } else {
        $fileName = uniqid("file_");
    }
    //重命名文件
    $fileName_arr = explode(".", $fileName);
    $fileName = myrule().".".$fileName_arr[1]; //rule()请查看上篇我的上篇博客thinkphp同时上传多张图片文件重名问题
    $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 == $chunks - 1) {
        // Strip the temp .part suffix off 
        rename("{$filePath}.part", $filePath);
    }
    // Return Success JSON-RPC response
    die($filePath); //这里直接返回结果
    // die('{"jsonrpc" : "2.0", "result" : "'.$filePath.'", "id" : "id"}');
  }
}

$images = $request->post('images/a'); //这里一定要注意， thinkphp通过name获取post数组时会获取不到数据，需要在name后加/a，表示获取数组详见Request的typeCast
model('PhotoImage')->query_insert($images, $id);//批量插入图片

/**
* 强制类型转换
* @param string $data
* @param string $type
* @return mixed
*/
private function typeCast(&$data, $type)
{
    switch (strtolower($type)) {
      // 数组
      case 'a':
        $data = (array) $data;
        break;
      // 数字
      case 'd':
        $data = (int) $data;
        break;
      // 浮点
      case 'f':
        $data = (float) $data;
        break;
      // 布尔
      case 'b':
        $data = (boolean) $data;
        break;
      // 字符串
      case 's':
      default:
        if (is_scalar($data)) {
          $data = (string) $data;
        } else {
          throw new \InvalidArgumentException('variable type error：' . gettype($data));
        }
    }
}