php php 顺时针或逆时针输出连续数字

<?php

class Circle
{
    private $start;
    private $is_clockwise;
    private $start_direction;
    private $is_asc;
    private $width;
    private $arr;

    public function __construct($params)
    {
        $this->start = $params['start'];
        $this->is_clockwise = isset($params['is_clockwise']) ? $params['is_clockwise'] : 0;
        $this->start_direction = isset($params['start_direction']) ? $params['start_direction'] : 1;
        $this->is_asc = isset($params['is_asc']) ? $params['is_asc'] : 1;
        $this->width = $params['width'];
    }

    public function getNums()
    {
        $i = 1;
        $p1 = $this->start;
        $circle_top = ceil($this->width / 2);

        if ($this->is_asc == 1) {
            $num_end = $this->width * $this->width + $this->start;
            while ($i <= $circle_top && $p1 <= $num_end) {
                if ($this->is_clockwise == 1) {
                    $this->arr[$i - 1][$i - 1] = $p1;
                    $p2 = $this->hor_add($p1 + 1, $i - 1, $i, $this->width - 2 * $i + 1);
                    $p3 = $this->ver_add($p2, $i, $this->width - $i, $this->width - 2 * $i + 1);
                    $p4 = $this->hor_reduce($p3, $this->width - $i, $this->width - $i - 1, $this->width - 2 * $i + 1);
                    $p1 = $this->ver_reduce($p4, $this->width - $i - 1, $i - 1, $this->width - 2 * $i);
                    $i++;
                } else {
                    $this->arr[$i - 1][$i - 1] = $p1;
                    $p2 = $this->ver_add($p1 + 1, $i, $i - 1, $this->width - 2 * $i + 1);
                    $p3 = $this->hor_add($p2, $this->width - $i, $i, $this->width - 2 * $i + 1);
                    $p4 = $this->ver_reduce($p3, $this->width - $i - 1, $this->width - $i, $this->width - 2 * $i + 1);
                    $p1 = $this->hor_reduce($p4, $i - 1, $this->width - $i - 1, $this->width - 2 * $i);
                    $i++;
                }
            }
        } else {
            $num_end = $this->start - $this->width * $this->width;
            while ($i <= $circle_top && $p1 >= $num_end) {
                if ($this->is_clockwise == 1) {
                    $this->arr[$i - 1][$i - 1] = $p1;
                    $p2 = $this->hor_add($p1 - 1, $i - 1, $i, $this->width - 2 * $i + 1);
                    $p3 = $this->ver_add($p2, $i, $this->width - $i, $this->width - 2 * $i + 1);
                    $p4 = $this->hor_reduce($p3, $this->width - $i, $this->width - $i - 1, $this->width - 2 * $i + 1);
                    $p1 = $this->ver_reduce($p4, $this->width - $i - 1, $i - 1, $this->width - 2 * $i);
                    $i++;
                } else {
                    $this->arr[$i - 1][$i - 1] = $p1;
                    $p2 = $this->ver_add($p1 - 1, $i, $i - 1, $this->width - 2 * $i + 1);//var_dump($this->arr,$p2);die;
                    $p3 = $this->hor_add($p2, $this->width - $i, $i, $this->width - 2 * $i + 1);
                    $p4 = $this->ver_reduce($p3, $this->width - $i - 1, $this->width - $i, $this->width - 2 * $i + 1);
                    $p1 = $this->hor_reduce($p4, $i - 1, $this->width - $i - 1, $this->width - 2 * $i);
                    $i++;
                }
            }
        }

        foreach ($this->arr as $key => $item) {
            ksort($item);
            $this->arr[$key] = $item;
        }

        $this->rotate();
        $this->dump($this->arr);
    }

    private function hor_add($start, $x, $y, $num)
    {
        if ($this->is_asc == 1) {
            for ($i = $start; $i < $start + $num; $i++) {
                $this->arr[$x][$y] = $i;
                ++$y;
            }
            return $start + $num;
        } else {
            for ($i = $start; $i > $start - $num; $i--) {
                $this->arr[$x][$y] = $i;
                ++$y;
            }
            return $start - $num;
        }
    }

    private function ver_add($start, $x, $y, $num)
    {
        if ($this->is_asc == 1) {
            for ($i = $start; $i < $start + $num; $i++) {
                $this->arr[$x][$y] = $i;
                ++$x;
            }
            return $start + $num;
        } else {
            for ($i = $start; $i > $start - $num; $i--) {
                $this->arr[$x][$y] = $i;
                ++$x;
            }
            return $start - $num;
        }
    }

    private function hor_reduce($start, $x, $y, $num)
    {
        if ($this->is_asc == 1) {
            for ($i = $start; $i < $start + $num; $i++) {
                $this->arr[$x][$y] = $i;
                $y--;
            }
            return $start + $num;
        } else {
            for ($i = $start; $i > $start - $num; $i--) {
                $this->arr[$x][$y] = $i;
                $y--;
            }
            return $start - $num;
        }
    }

    private function ver_reduce($start, $x, $y, $num)
    {
        if ($this->is_asc == 1) {
            for ($i = $start; $i < $start + $num; $i++) {
                $this->arr[$x][$y] = $i;
                $x--;
            }
            return $start + $num;
        } else {
            for ($i = $start; $i > $start - $num; $i--) {
                $this->arr[$x][$y] = $i;
                $x--;
            }
            return $start - $num;
        }
    }

    private function dump($arr)
    {
        $len = count($arr);
        $html = '<table border="1px solid silver" >';
        for ($i = 0; $i < $len; ++$i) {
            $html .= '<tr >';
            for ($j = 0; $j < $len; ++$j) {
                $html .= '<td width="50px" height="50px">' . $arr[$i][$j] . '</td>';
            }
            $html .= '</tr>';
        }
        $html .= '</table>';
        echo $html;
    }

    private function rotate()
    {
        $arr = [];
        if ($this->start_direction == 1) {
            return;
        } else if ($this->start_direction == 3) {
            $arr = $this->arr;
            for ($i = 0; $i < $this->width; ++$i) {
                for ($j = 0; $j < $this->width; ++$j) {
                    $this->arr[$i][$j] = $arr[$i][$this->width - $j - 1];
                }
            }
        } else if ($this->start_direction == 2 || $this->start_direction == 4) {
            for ($i = 0; $i < $this->width; ++$i) {
                for ($j = 0; $j < $this->width; ++$j) {
                    $arr[$i][$j] = $this->arr[$j][$i];
                }
            }
            for ($i = 0; $i < $this->width; ++$i) {
                for ($j = 0; $j < $this->width; ++$j) {
                    if ($this->start_direction == 2) {
                        $this->arr[$i][$j] = $arr[$i][$this->width - $j - 1];
                    } else {
                        $this->arr[$i][$j] = $arr[$this->width - $i - 1][$j];
                    }
                }
            }
        }
    }
}

$num = new Circle(['is_asc' => 0, 'start' => 9, 'width' => 3, 'is_clockwise' => 1, 'start_direction' => 1]);
$num->getNums();