Unbeatable Tic-Tac-Toe

Select	Select	X
Select	O	Select
Select	Select	Select

Warning: DOMDocument::load(): Extra content at the end of the document in /usr/local/www/apache24/data/tictactoe/games.xml, line: 27980 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('t6995', 'moves', '__X_O____') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('__X_O____', 't6995') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38