Unbeatable Tic-Tac-Toe

New Game
Make Your Move
X O X
X O Select
O X O

Warning: DOMDocument::load(): Couldn't find end of Start Tag gam line 17999 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 17999 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): Premature end of data in tag tictactoe line 2 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 17999 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('t8423', 'moves', 'XOXXO_OXO') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('XOXXO_OXO', 't8423') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38