DARS JADVAL PHP FULL

1) Papkani hostingga yuklang, masalan:
   public_html/darsjadval/

2) PhpSpreadsheet vendor joylashuvi uch xil bo‘lishi mumkin:
   public_html/darsjadval/vendor/autoload.php
   public_html/vendor/autoload.php
   yoki loyiha yonidagi ../vendor/autoload.php

Agar serverda composer bor bo‘lsa:
   composer require phpoffice/phpspreadsheet

3) data/ va exports/ papkalariga yozish huquqi bering: 755 yoki zarur bo‘lsa 775.

4) Kirish:
   login.php
   Login: admin
   Parol: admin123

Muhim fayllar:
- config.php: baza, login, PhpSpreadsheet autoload qidirish
- upload_excel.php: Excel o‘qish
- index.php: asosiy interfeys
- save.php: foydalanuvchi ishini saqlash
- export.php: JSON/Excel export
