Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/edu/web/edu.yru.ac.th/public_html/edu/Connections/conn.php:20 Stack trace: #0 /home/edu/web/edu.yru.ac.th/public_html/edu/index.php(4): require_once() #1 {main} thrown in /home/edu/web/edu.yru.ac.th/public_html/edu/Connections/conn.php on line 20