Unbeatable Tic-Tac-Toe

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

Warning: DOMDocument::load(): Couldn't find end of Start Tag move line 32304 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 32304 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): Premature end of data in tag game line 32303 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 32304 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('t8456', 'moves', 'OX__O_XOX') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('OX__O_XOX', 't8456') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38