Unbeatable Tic-Tac-Toe

Select	Select	Select
X	O	X
O	Select	Select

Warning: DOMDocument::load(): Document is empty in /usr/local/www/apache24/data/tictactoe/games.xml, line: 1 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Fatal error: Uncaught Error: Call to a member function getElementsByTagName() on null in /usr/local/www/apache24/data/tictactoe/index.php:38 Stack trace: #0 /usr/local/www/apache24/data/tictactoe/index.php(113): update_element('t27', 'moves', '___XOXO__') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('___XOXO__', 't27') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38