Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in D:\phpstudy_pro\WWW\www.trailerscouplers.com\function\conn.php:5 Stack trace: #0 D:\phpstudy_pro\WWW\www.trailerscouplers.com\function\like.php(2): require() #1 {main} thrown in D:\phpstudy_pro\WWW\www.trailerscouplers.com\function\conn.php on line 5