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  • 递归无限极分类

    <?php
            /*
            *     无限极分类 类
            */
        header("Content-Type: text/html; charset=UTF-8");
        Class Category {
            //组合一维数组
            Static Public function unlimitedForLevel ($cate, $html = '--', $pid = 0, $level = 0) {
                $arr = array();
                foreach ($cate as $k => $v) {
                    if ($v['pid'] == $pid) {
                        $v['level'] = $level + 1;
                        $v['html']  = str_repeat($html, $level);
                        $arr[] = $v;
                        $arr = array_merge($arr, self::unlimitedForLevel($cate, $html, $v['id'], $level + 1));
                    }
                }
                return $arr;
            }
            //组合多维数组
            Static Public function unlimitedForLayer ($cate, $name = 'child', $pid = 0) {
                $arr = array();
                foreach ($cate as $v) {
                    if ($v['pid'] == $pid) {
                        $v[$name] = self::unlimitedForLayer($cate, $name, $v['id']);
                        $arr[] = $v;
                    }
                }
                return $arr;
            }
            //传递一个子分类ID返回所有的父级分类  
            Static Public function getParents ($cate, $id) {
                $arr = array();
                foreach ($cate as $v) {
                    if ($v['id'] == $id) {
                        $arr[] = $v;
                        $arr = array_merge(self::getParents($cate, $v['pid']), $arr);
                    }
                }
                return $arr;
            }
            //传递一个父级分类ID返回所有子分类ID
            Static Public function getChildsId ($cate, $pid) {
                $arr = array();
                foreach ($cate as $v) {
                    if ($v['pid'] == $pid) {
                        $arr[] = $v['id'];
                        $arr = array_merge($arr, self::getChildsId($cate, $v['id']));
                    }
                }
                return $arr;
            }
            //传递一个父级分类ID返回所有子分类
            Static Public function getChilds ($cate, $pid) {
                $arr = array();
                foreach ($cate as $v) {
                    if ($v['pid'] == $pid) {
                        $arr[] = $v;
                        $arr = array_merge($arr, self::getChilds($cate, $v['id']));
                    }
                }
                return $arr;
            }

        }

    $cate = array(
        0 => array('id' => 1, 'pid' => 0, 'name' => '江西省'),
        1 => array('id' => 2, 'pid' => 0, 'name' => '浙江省'),
        2 => array('id' => 3, 'pid' => 1, 'name' => '上饶市'),
        3 => array('id' => 4, 'pid' => 3, 'name' => '广丰县'),
        4 => array('id' => 5, 'pid' => 2, 'name' => '杭州市'),
        5 => array('id' => 6, 'pid' => 5, 'name' => '西湖'),
        6 => array('id' => 7, 'pid' => 6, 'name' => '断桥'),
    );
    //print_r(Category::unlimitedForLevel($cate));
    print_r(Category::unlimitedForLayer($cate));
    //print_r(Category::getParents($cate,7));
    //print_r(Category::getChildsId($cate,2));
    //print_r(Category::getChilds($cate,2));
    // PHP交流群 278528223
     ?>递归无限极分类

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  • 原文地址:https://www.cnblogs.com/jamescr7/p/7662096.html
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