Unbeatable Tic-Tac-Toe

O
X	O
X	X	O

Warning: DOMDocument::load(): Specification mandates value for attribute xm in /usr/local/www/apache24/data/tictactoe/games.xml, line: 7011 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): attributes construct error in /usr/local/www/apache24/data/tictactoe/games.xml, line: 7011 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): Couldn't find end of Start Tag game line 7011 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 7011 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: 7011 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('t8631', 'moves', 'O__XO_XXO') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('O__XO_XXO', 't8631') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38