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<?php $map_ar = [ 'x' => [ $user['x'] + 1, $user['x'] - 1, $user['x'] ], 'y' => [ $user['y'] + 1, $user['y'] - 1, $user['x'] ] ]; if(in_array($map['x'], $map_ar['x']) and in_array($map['y'], $map_ar['y'])) echo 'можно идти';