Unbeatable Tic-Tac-Toe

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

Warning: DOMDocument::load(): Couldn't find end of Start Tag moves line 24568 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 24568 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): Premature end of data in tag game line 24567 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 24568 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('t8404', 'moves', '_OXXO____') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('_OXXO____', 't8404') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38