PHP副本无法复制文件但未报告任何错误

Question

我正在尝试将3个文件从现有文件夹复制到刚刚使用mkdir创建的新文件夹。到目前为止没有运气。文件不会复制到文件夹中，PHP也报告没有错误。我使用PHP语法检查器在线检查了代码，它回来了。

我认为我的格式错误在复制命令中但我不确定具体问题是什么。我已经尝试在要复制的文件和目的地上使用没有引用和单引号，但都没有工作。我仔细检查了要复制的文件的网址，这是正确的。

任何建议都将不胜感激。

 protected function handle_file_upload($uploaded_file, $name, $size, $type, $error,
            $index = null, $content_range = null) {
        $file = new \stdClass();
        $file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error,
            $index, $content_range);
        $file->size = $this->fix_integer_overflow((int)$size);
        $file->type = $type;
        if ($this->validate($uploaded_file, $file, $error, $index)) {
            $this->handle_form_data($file, $index);
            $upload_dir = $this->get_upload_path();
            if (!is_dir($upload_dir)) {
                mkdir($upload_dir, $this->options['mkdir_mode'], true);
             //Attempting to add new code below
             //let's secure the new folders with 3 copied files
              $copy1 =copy(/files/.gitignore, '$upload_dir'.'/.gitignore');
              $copy2 =copy(/files/.htaccess, '$upload_dir'.'/.htaccess');
              $copy3 =copy(/files/index.html, '$upload_dir'.'/index.html');
            }
            $file_path = $this->get_upload_path($file->name);
            $append_file = $content_range && is_file($file_path) &&
                $file->size > $this->get_file_size($file_path);
            if ($uploaded_file && is_uploaded_file($uploaded_file)) {
                // multipart/formdata uploads (POST method uploads)
                if ($append_file) {
                    file_put_contents(
                        $file_path,
                        fopen($uploaded_file, 'r'),
                        FILE_APPEND
                    );
                } else {
                    move_uploaded_file($uploaded_file, $file_path);
                }
            } else {
                // Non-multipart uploads (PUT method support)
                file_put_contents(
                    $file_path,
                    fopen('php://input', 'r'),
                    $append_file ? FILE_APPEND : 0
                );
            }
            $file_size = $this->get_file_size($file_path, $append_file);
            if ($file_size === $file->size) {
                $file->url = $this->get_download_url($file->name);
                if ($this->is_valid_image_file($file_path)) {
                    $this->handle_image_file($file_path, $file);
                }
            } else {
                $file->size = $file_size;
                if (!$content_range && $this->options['discard_aborted_uploads']) {
                    unlink($file_path);
                    $file->error = $this->get_error_message('abort');
                }
            }
            $this->set_additional_file_properties($file);
        }
        return $file;
    }