PHP mvc如何进行文件上传

Question

有人可以帮助我使用其他数据（例如姓名电子邮件等）以表格形式上传文件... https://github.com/psytonik/School-Project-PHP/tree/master/school_project 这是项目

Answer 1

根据您的应用结构，我准备了一些代码，用于提交表单并上传多个文件。它应该让您了解工作流程。

请注意，您应该利用：

• Composer 自动加载器；
• 一个依赖注入容器，比如PHP-DI；
• 路由器，例如FastRoute；
• “PSR-7: HTTP message interfaces”的实现（也抽象了uploaded files 列表），例如Zend-Diactoros。

一些资源：

• MVC for advanced PHP developers;
• How should a model be structured in MVC;
• Understanding MVC Views in PHP
• Error reporting basics
• PHP Standards Recommendations（1、2、4、7 和 11）。
• Tom Butler's programming blog
• Catalog of Patterns of Enterprise Application Architecture

一些系列：

一）

1. Building a Domain Model - An Introduction to Persistence Agnosticism
2. Building a Domain Model – Integrating Data Mappers
3. An Introduction to Services
4. Handling Collections of Aggregate Roots – the Repository Pattern

B)

1. An Introduction to the Front Controller Pattern, Part 1
2. An Introduction to the Front Controller Pattern, Part 2

---

controllers/Test.php

可通过路线访问：http://[your-host]/test

<?php

class Test extends Controller {

    private $uploader;

    public function __construct() {
        $this->uploader = new Uploader();
    }

    public function index($extra = []) {
        $data = array_merge([], $extra);

        $this->view('test/index', $data);
    }

    public function upload() {
        $data = [];

        // Get the test name.
        $testName = $_POST['test_name'] ?? '';

        // Validate the test name.
        if (empty($testName)) {
            $errors['test_name'] = 'Please enter student name';
        }

        // Check the files list.
        try {
            if (!$_FILES) {
                throw new UnexpectedValueException(
                'There was a problem with the upload. Please try again.'
                );
            }
        } catch (Exception $exc) {
            echo $exc->getMessage();
            exit();
        }

        // If no errors, then upload the files.
        if (empty($errors)) {
            $uploadResult = $this->uploader->upload($_FILES['files']);

            if ($uploadResult !== TRUE) {
                $errors['files'] = $uploadResult;
            }
        }

        $data['test_name'] = $testName;
        $data['errors'] = $errors ?? [];

        // Flash some success message using the flash() function if no errors occurred...

        $this->index($data);
    }

}

库/Uploader.php

您可以/应该将其拆分为更多方法。

<?php

class Uploader {

    /**
     * If the value is set to a relative path, then the given path is
     * relative to the document root, e.g. to the "public" directory.
     */
    const UPLOAD_DIR = APPROOT . '/uploads/' /* This is an absolute path */;
    const UPLOAD_DIR_ACCESS_MODE = 0777;
    const UPLOAD_MAX_FILE_SIZE = 10485760;
    const UPLOAD_ALLOWED_MIME_TYPES = [
        'image/jpeg',
        'image/png',
        'image/gif',
    ];

    /**
     *
     */
    public function __construct() {

    }

    /**
     * Upload the files list.
     *
     * @param array $files (optional) Files list - as received from $_FILES variable.
     * @return bool|string[] TRUE on success, or a list of errors on failure.
     */
    public function upload(array $files = []) {
        // Normalize the files list.
        $normalizedFiles = $this->normalizeFiles($files);

        // Upload each file.
        foreach ($normalizedFiles as $normalizedFile) {
            $uploadResult = $this->uploadFile($normalizedFile);

            if ($uploadResult !== TRUE) {
                $errors[] = $uploadResult;
            }
        }

        // Return TRUE on success, or the errors list on failure.
        return empty($errors) ? TRUE : $errors;
    }

    /**
     * Normalize the files list.
     *
     * @link https://www.php-fig.org/psr/psr-7/#16-uploaded-files PSR-7: 1.6 Uploaded files.
     *
     * @param array $files (optional) Files list - as received from $_FILES variable.
     * @return array Normalized files list.
     */
    private function normalizeFiles(array $files = []) {
        $normalizedFiles = [];

        foreach ($files as $filesKey => $filesItem) {
            foreach ($filesItem as $itemKey => $itemValue) {
                $normalizedFiles[$itemKey][$filesKey] = $itemValue;
            }
        }

        return $normalizedFiles;
    }

    /**
     * Upload a file.
     *
     * @param array $file A normalized file item - as received from $_FILES variable.
     * @return bool|string TRUE on success, or an error string on failure.
     */
    private function uploadFile(array $file = []) {
        $name = $file['name'];
        $type = $file['type'];
        $tmpName = $file['tmp_name'];
        $error = $file['error'];
        $size = $file['size'];

        /*
         * Validate the file error. The actual upload takes place when the file
         * error is UPLOAD_ERR_OK (the first case in this switch statement).
         *
         * @link https://secure.php.net/manual/en/features.file-upload.errors.php Error Messages Explained.
         */
        switch ($error) {
            case UPLOAD_ERR_OK: /* There is no error, the file can be uploaded. */
                // Validate the file size.
                if ($size > self::UPLOAD_MAX_FILE_SIZE) {
                    return sprintf('The size of the file "%s" exceeds the maximal allowed size (%s Byte).'
                            , $name
                            , self::UPLOAD_MAX_FILE_SIZE
                    );
                }

                // Validate the file type.
                if (!in_array($type, self::UPLOAD_ALLOWED_MIME_TYPES)) {
                    return sprintf('The file "%s" is not of a valid MIME type. Allowed MIME types: %s.'
                            , $name
                            , implode(', ', self::UPLOAD_ALLOWED_MIME_TYPES)
                    );
                }

                // Define the upload path.
                $uploadDirPath = rtrim(self::UPLOAD_DIR, '/');
                $uploadPath = $uploadDirPath . '/' . $name;

                // Create the upload directory.
                $this->createDirectory($uploadDirPath);

                // Move the file to the new location.
                if (!move_uploaded_file($tmpName, $uploadPath)) {
                    return sprintf('The file "%s" could not be moved to the specified location.'
                            , $name
                    );
                }

                return TRUE;

                break;

            case UPLOAD_ERR_INI_SIZE:
            case UPLOAD_ERR_FORM_SIZE:
                return sprintf('The provided file "%s" exceeds the allowed file size.'
                        , $name
                );
                break;

            case UPLOAD_ERR_PARTIAL:
                return sprintf('The provided file "%s" was only partially uploaded.'
                        , $name
                );
                break;

            case UPLOAD_ERR_NO_FILE:
                return 'No file provided. Please select at least one file.';
                break;

            //...
            // AND SO ON FOR THE OTHER FILE ERROR TYPES...
            //...

            default:
                return 'There was a problem with the upload. Please try again.';
                break;
        }

        return TRUE;
    }

    /**
     * Create a directory at the specified path.
     *
     * @param string $path Directory path.
     * @return $this
     */
    private function createDirectory(string $path) {
        try {
            if (file_exists($path) && !is_dir($path)) {
                throw new UnexpectedValueException(
                'The upload directory can not be created because '
                . 'a file having the same name already exists!'
                );
            }
        } catch (Exception $exc) {
            echo $exc->getMessage();
            exit();
        }

        if (!is_dir($path)) {
            mkdir($path, self::UPLOAD_DIR_ACCESS_MODE, TRUE);
        }

        return $this;
    }

}

views/test/index.php

注意表单操作：http://[your-host]/test/upload。它指向Test 控制器和upload 方法。好吧，我将方法命名为upload，以表明它是关于上传过程的测试。虽然我应该将其命名为 save 或类似名称，以反映一个事实，即要保存一些数据，包括上传的文件。

<?php require APPROOT . '/views/inc/header.php'; ?>
<div class="container">
    <div class="row">
        <div class="sm-12 col">

            <h2>Test upload</h2>

            <p>Submit the form</p>

            <form action="<?php echo URLROOT; ?>/test/upload" method="post" enctype="multipart/form-data">
                <div class="form-group">
                    <label for="test_name">Test name <sup>*</sup></label>
                    <input type="text" id="test_name" name="test_name" class="form-control form-control-lg <?php echo empty($data['errors']['test_name']) ? '' : 'is-invalid'; ?>" value="<?php echo $data['test_name'] ?? ''; ?>" />
                    <span class="invalid-feedback"><?php echo $data['errors']['test_name'] ?? ''; ?></span>

                </div>
                <div class="form-group">
                    <label for="myFiles">Files <sup>*</sup></label></label>
                    <input type="file" id="myFiles" name="files[]" multiple class="form-control form-control-lg <?php echo empty($data['errors']['files']) ? '' : 'is-invalid'; ?>" />
                    <span class="invalid-feedback"><?php echo empty($data['errors']['files']) ? '' : implode('<br/>', $data['errors']['files']); ?></span>
                </div>
                <input type="submit" value="Submit" class="btn btn-success">
            </form>
        </div>
    </div>
</div>
<?php require APPROOT . '/views/inc/footer.php'; ?>