使用 ng-file-upload + PHP 可恢复上传（合并部分）答案

【问题标题】：Resumable Upload with ng-file-upload + PHP (Merging parts)使用 ng-file-upload + PHP 可恢复上传（合并部分）
【发布时间】：2017-08-26 18:10:49
【问题描述】：

我正在尝试使用可恢复上传模式实现ng-file-upload，以将大文件分成块并在上传后合并它们。我已经在许多项目中实现了 ng-file-upload，但这是我第一次这样做来上传这么大的文件。

我的问题是我不知道如何使它在 PHP 中的服务器端文件中工作。我只需要上传不同名称的块，但我无法合并它们。

任何人都可以在 PHP 中发布一个服务器端代码示例来实现此功能吗？

这是我到目前为止所做的：

AngularJS

$scope.uploadMediaFile = function (file) {

        if(file) {

            Upload.upload({
                ignoreLoadingBar: true,
                url: 'app/api/upload/mediaFile.php',
                resumeChunkSize: '1MB',
                file: file
            }).then(function (response) {
                if(response.data.success) {
                    $scope.post.mediaFile = response.data.filename;
                    $scope.post.duration = response.data.duration;
                } else {
                    console.error(response.data.error);
                }
            }, null, function (evt) {
                console.log(part);
                file.progress = Math.min(100, parseInt(100.0 * evt.loaded / evt.total));
            });
        }
    };

mediaFile.php

$filename = $_FILES['file']['name'];
$file_tmp = $_FILES['file']['tmp_name'];

$file_ext = pathinfo($filename, PATHINFO_EXTENSION);

$file_des = $_SERVER['DOCUMENT_ROOT'] . '/storage/content/temp/';

if(!file_exists($file_des)) mkdir($file_des);

// Puting a diferent name for each file part
$new_filename = uniqid() . "." . pathinfo($filename, PATHINFO_EXTENSION);

move_uploaded_file($file_tmp, $file_des . $new_filename)

到目前为止，我得到了许多具有不同名称的相同文件。

【问题讨论】：

标签： php file-upload ng-file-upload chunks

【解决方案1】：

以防万一有人正在寻找类似的问题，我发布我的解决方案。

<?php
// File chunk
$filename = $_FILES['file']['name'];
$file_tmp = $_FILES['file']['tmp_name'];


// Defining temporary directory

$file_des = $_SERVER['DOCUMENT_ROOT'] . '/storage/content/temp/';

// If not exists, create temp dir.
if(!file_exists($file_des)) mkdir($file_des);

// The first chunk have the original name of file uploaded
// so, if it exists in temp dir, upload the other pieces 
// with anothers uniques names
if(file_exists($file_des . $filename)) {

    $new_name = uniqid() . "." . pathinfo($filename, PATHINFO_EXTENSION);
    move_uploaded_file($file_tmp, $file_des . $new_name);

    // Now, append the chunk file to the first base file.
    $handle = fopen($file_des . $new_name, 'rb');
    $buff = fread($handle, filesize($file_des . $new_name));
    fclose($handle);

    $final = fopen($file_des . $filename, 'ab');
    $write = fwrite($final, $buff);
    fclose($final);

    // Delete chunk
    unlink($file_des . $new_name);

} else {

    /* MAKE SURE WE DELETE THE CONTENT OF THE DESTINATION FOLDER FIRST, 
       OTHERWISE CHUNKS WILL BE APPENDED FOR EVER 
       IN CASE YOU ARE TRYING TO UPLOAD A FILE WITH THE EXACT SAME NAME. 
       CAREFUL: YOU MAY PREFER TO DELETE ONLY THE FILE 
       INSTEAD OF THE FOLDER'S CONTENT, IN THE CASE 
       YOUR FOLDER CONTAINS MORE THAN ONE FILE.
    */

    $files_to_delete = glob($file_des."*"); // get all file names
    foreach($files_to_delete as $file) // iterate files
    { 
      if(is_file($file))
      {
        unlink($file); // delete file
      }
    }


    // First chunk of file with original name.
    move_uploaded_file($file_tmp, $file_des . $filename);
}

【讨论】：