function win()
{
// Check the rows, columns and diagonals for a winning line.
$lines = array(array($this->board[0], $this->board[4], $this->board[8]), array($this->board[2], $this->board[4], $this->board[6]));
for ($i = 0; $i <= 2; $i++) {
$lines[] = array($this->board[$i], $this->board[$i + 3], $this->board[$i + 6]);
$lines[] = array($this->board[$i * 3], $this->board[$i * 3 + 1], $this->board[$i * 3 + 2]);
}
foreach ($lines as $line) {
if (TicTacToe::checkline($line)) {
if ($line[0] == "o") {
return -1;
} else {
if ($line[0] == "x") {
return 1;
}
}
}
}
return 0;
}
