i want to display Bangla language from my database . : **i want to display Bangla language from my database . but it shows error massage 

> i want to display Bangla language from my database . Warning: mysqli_query() expects at least 2 parameters, 1 given in C:\xampp\htdocs\dashboard\ban.php on line 362

Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, null given in C:\xampp\htdocs\dashboard\ban.php on line 364**
