Warning: Undefined variable $db in /customers/a/e/e/dimensionx.be/httpd.www/dx/code/db_misc.php on line 49

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /customers/a/e/e/dimensionx.be/httpd.www/dx/code/db_misc.php:31
Stack trace:
#0 /customers/a/e/e/dimensionx.be/httpd.www/dx/code/db_misc.php(49): db_connect(NULL)
#1 /customers/a/e/e/dimensionx.be/httpd.www/index.php(44): require('/customers/a/e/...')
#2 {main}
  thrown in /customers/a/e/e/dimensionx.be/httpd.www/dx/code/db_misc.php on line 31