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Example code of nguyenquocanhz/mime-type

Informations about the package mime-type

nguyenquocanhz/mime-type

CI Latest Version

Xác định và kiểm tra MIME type an toàn cho PHP 8.1+.

Thay thế mime_content_type() với 3 khác biệt chính:

mime_content_type() MimeType
.css / .js text/plain ❌ text/css / text/javascript ✅
File lỗi false + E_WARNING MimeException
phar://, ../../etc/passwd Xử lý bình thường ❌ Bị chặn ✅

Cài đặt

Namespace là Gems\Mime\ (không trùng tên vendor — Composer không bắt buộc phải trùng).

Chưa có Composer thì require autoloader dự phòng:

Yêu cầu: PHP >= 8.1, ext-fileinfo.

Dùng nhanh

Serve file

headersFor() luôn thêm X-Content-Type-Options: nosniff, và tự ép tải xuống với các type chạy được script (SVG, HTML, XML) để chặn stored XSS.

Kết quả với .svg:

Kiểm tra file upload

validateUpload() làm 6 bước:

  1. Kiểm tra UPLOAD_ERR_OK và is_uploaded_file()
  2. Chặn file rỗng và file quá maxBytes
  3. Chặn đuôi nguy hiểm, kể cả đuôi kép avatar.php.jpg
  4. Đọc MIME thật từ magic bytes, đối chiếu allowlist
  5. Với ảnh: kiểm tra thêm getimagesize() để loại file polyglot
  6. Sinh tên ngẫu nhiên, đuôi lấy từ MIME thật — không giữ gì từ client

Những gì thư viện KHÔNG làm

Bảo mật

Nếu baseDir không được đặt, mọi đường dẫn đều được chấp nhận miễn tồn tại. Luôn đặt baseDir khi đường dẫn có thể đến từ request.

Test

License

MIT

All versions of mime-type with dependencies

PHP Build Version
Package Version
Requires php Version >=8.1
ext-fileinfo Version *
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