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Informations about the package array-tree

array-tree

带有树结构的数组（含parent_id）非递归生成包含层级的树结构数组

只是遍历了一遍所有数据，和指定父元素及其下所有子元素，未使用递归，理论上可以支持无限层级

原始结构

json编码后结构如下：
   [{
       "id": "1",
       "parent_id": "0",
       "name": "插件中心"
   }, {
       "id": "2",
       "parent_id": "1",
       "name": "钩子管理"
   }, {
       "id": "3",
       "parent_id": "2",
       "name": "钩子插件管理"
   }, {
       "id": "4",
       "parent_id": "2",
       "name": "钩子插件排序"
   }, {
       "id": "5",
       "parent_id": "2",
       "name": "同步钩子"
   }, {
       "id": "6",
       "parent_id": "0",
       "name": "设置"
   }, {
       "id": "7",
       "parent_id": "6",
       "name": "友情链接"
   }, {
       "id": "8",
       "parent_id": "7",
       "name": "添加友情链接"
   }, {
       "id": "9",
       "parent_id": "7",
       "name": "添加友情链接提交保存"
   }]

生成包含层级结构的数组

ArrayTree::getTree($array,id);  //$array 包含树结构关系的数组（需包含 id  parent_id name），$id 父id ，会返回该父id下的所有子级元素（层级结构）
结果如下：
[{
    "id": "1",
    "parent_id": "0",
    "name": "插件中心",
    "children": [{
        "id": "2",
        "parent_id": "1",
        "name": "钩子管理",
        "children": [{
            "id": "3",
            "parent_id": "2",
            "name": "钩子插件管理",
            "children": []
        }, {
            "id": "4",
            "parent_id": "2",
            "name": "钩子插件排序",
            "children": []
        }, {
            "id": "5",
            "parent_id": "2",
            "name": "同步钩子",
            "children": []
        }]
    }]
    }, {
    "id": "6",
    "parent_id": "0",
    "name": "设置",
    "children": [{
        "id": "7",
        "parent_id": "6",
        "name": "友情链接",
        "children": [{
            "id": "8",
            "parent_id": "7",
            "name": "添加友情链接",
            "children": []
               }, {
            "id": "9",
            "parent_id": "7",
            "name": "添加友情链接提交保存",
            "children": []
        }]
    }]
}]

生成包含层级结构的数组，并添加名称路径

ArrayTree::getTreePath($res,$id,$separator);  //$array 包含树结构关系的数组（需包含 id  parent_id name），$id 父id ，会返回该父id下的所有子级元素（层级结构），$separator 路径分隔符
结果如下（分隔符是/，因转为json字符串添加了转义符，解码后是没有\的）：
[{
    "id": "1",
    "parent_id": "0",
    "name": "插件中心",
    "path": "插件中心",
    "children": [{
        "id": "2",
        "parent_id": "1",
        "name": "钩子管理",
        "path": "插件中心\/钩子管理",
        "children": [{
            "id": "3",
            "parent_id": "2",
                "name": "钩子插件管理",
                "path": "插件中心\/钩子管理\/钩子插件管理",
                "children": []
               }, {
        "id": "4",
            "parent_id": "2",
            "name": "钩子插件排序",
            "path": "插件中心\/钩子管理\/钩子插件排序",
            "children": []
              }, {
            "id": "5",
            "parent_id": "2",
            "name": "同步钩子",
            "path": "插件中心\/钩子管理\/同步钩子",
            "children": []
        }]
    }]
        }, {
         "id": "6",
         "parent_id": "0",
        "name": "设置",
        "path": "设置",
        "children": [{
        "id": "7",
            "parent_id": "6",
            "name": "友情链接",
            "path": "设置\/友情链接",
            "children": [{
                "id": "8",
                "parent_id": "7",
                "name": "添加友情链接",
                "path": "设置\/友情链接\/添加友情链接",
                "children": []
                   }, {
                "id": "9",
                "parent_id": "7",
                "name": "添加友情链接提交保存",
                 path": "设置\/友情链接\/添加友情链接提交保存",
                "children": []
            }]
        }]
    }]

获取父元素所有子元素id的集合

ArrayTree::getChildrenIdArray($array,$id);  //$array 包含树结构关系的数组（需包含 id  parent_id name），$id 父id ，会返回该父id下的所有子级元素id的集合
结果如下：
["1","6","2","7","3","4","5","8","9"]

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