SmartUni MySQL Migration Notes

1. Import database_schema_mysql.sql in phpMyAdmin first.
2. Update db.php if your MySQL username/password/database name is different.
   Default for XAMPP is usually:
   username: root
   password: empty
   database: socmed
3. This version uses mysqli and includes temporary sqlsrv_* compatibility functions in db.php.
   This keeps the project working while moving from SQL Server to MySQL.
4. SQL Server syntax updated:
   GETDATE() -> NOW()
   ISNULL() -> COALESCE()
   SELECT TOP n -> LIMIT n
   SQL Server IF OBJECT_ID table creation -> MySQL CREATE TABLE IF NOT EXISTS