php二维数据转为带线条的树形结构数据
发表于：2024-09-26 10:37:20浏览：136次
引言
本文将详细介绍php二维数据转为带线条的树形结构数据，并提供整理的源码和通过示例代码进行说明。
调用
源数据
[
{
"id": "1",
"pid": 0,
"name": "一级栏目一"
},
{
"id": "2",
"pid": 0,
"name": "一级栏目二"
},
{
"id": "3",
"pid": 1,
"name": "二级栏目一"
},
{
"id": "4",
"pid": 1,
"name": "二级栏目二"
},
{
"id": "5",
"pid": 2,
"name": "二级栏目三"
},
{
"id": "6",
"pid": 3,
"name": "三级栏目一"
},
{
"id": "7",
"pid": 3,
"name": "三级栏目二"
}
]
初始化
$instance = \app\common\utils\Tree::instance()->init($data);
生成树形结构数据
$tree_data = $instance->getTreeOrg(0);
// 输出
[
{
"id": "1",
"pid": 0,
"name": "一级栏目一",
"spacer": "",
"_child": [
{
"id": "3",
"pid": 1,
"name": "二级栏目一",
"spacer": " ├",
"_child": [
{
"id": "6",
"pid": 3,
"name": "三级栏目一",
"spacer": " │ ├",
"_child": []
},
{
"id": "7",
"pid": 3,
"name": "三级栏目二",
"spacer": " │ └",
"_child": []
}
]
},
{
"id": "4",
"pid": 1,
"name": "二级栏目二",
"spacer": " └",
"_child": []
}
]
},
{
"id": "2",
"pid": 0,
"name": "一级栏目二",
"spacer": "",
"_child": [
{
"id": "5",
"pid": 2,
"name": "二级栏目三",
"spacer": " └",
"_child": []
}
]
}
]
生成带符号的二维数组
$list = $instance->getTreeList($tree_data);
// 输出
[
{
"id": "1",
"pid": 0,
"name": " 一级栏目一",
"spacer": "",
"haschild": 1
},
{
"id": "3",
"pid": 1,
"name": " ├ 二级栏目一",
"spacer": " ├",
"haschild": 1
},
{
"id": "6",
"pid": 3,
"name": " │ ├ 三级栏目一",
"spacer": " │ ├",
"haschild": 0
},
{
"id": "7",
"pid": 3,
"name": " │ └ 三级栏目二",
"spacer": " │ └",
"haschild": 0
},
{
"id": "4",
"pid": 1,
"name": " └ 二级栏目二",
"spacer": " └",
"haschild": 0
},
{
"id": "2",
"pid": 0,
"name": " 一级栏目二",
"spacer": "",
"haschild": 1
},
{
"id": "5",
"pid": 2,
"name": " └ 二级栏目三",
"spacer": " └",
"haschild": 0
}
]
生成html的option
$options = $instance->getHtmlOption(0);
// 输出
<option value=1 >一级栏目一</option>
<option value=3 > ├二级栏目一</option>
<option value=6 > │ ├三级栏目一</option>
<option value=7 > │ └三级栏目二</option>
<option value=4 > └二级栏目二</option>
<option value=2 >一级栏目二</option>
<option value=5 > └二级栏目三</option>
生成html的ul
$ul = $instance->getHtmlUl(0);
// 输出
<li value=1 >一级栏目一
<ul >
<li value=3 >二级栏目一
<ul >
<li value=6 >三级栏目一 </li>
<li value=7 >三级栏目二 </li>
</ul>
</li>
<li value=4 >二级栏目二 </li>
</ul>
</li>
<li value=2 >一级栏目二
<ul >
<li value=5 >二级栏目三 </li>
</ul>
</li>
类
<?php
namespace app\common\utils;
/**
* 树型
*/
class Tree
{
protected static $instance;
/**
* 生成树型结构所需要的2维数组
* @var array
*/
public $arr = [];
/**
* 生成树型结构所需修饰符号，可以换成图片
* @var array
*/
public $icon = array('│', '├', '└');
public $nbsp = " ";
public $pidname = 'pid';
public $pk = 'id';
public $childname = '_child';
/**
* 初始化
* @access public
* @return Tree
*/
public static function instance()
{
if (is_null(self::$instance)) {
self::$instance = new static();
}
return self::$instance;
}
/**
* 初始化方法
* @param array $arr 2维数组，例如：
* array(
* 0 => array('id'=>'1','pid'=>0,'name'=>'一级栏目一'),
* 1 => array('id'=>'2','pid'=>0,'name'=>'一级栏目二'),
* 2 => array('id'=>'3','pid'=>1,'name'=>'二级栏目一'),
* 3 => array('id'=>'4','pid'=>1,'name'=>'二级栏目二'),
* 4 => array('id'=>'5','pid'=>2,'name'=>'二级栏目三'),
* 5 => array('id'=>'6','pid'=>3,'name'=>'三级栏目一'),
* 6 => array('id'=>'7','pid'=>3,'name'=>'三级栏目二')
* )
* @param string $pidname 父字段名称
* @param string $nbsp 空格占位符
* @return Tree
*/
public function init(array $arr = [], string $pk = null,string $childname = null,string $pidname = null, string $nbsp = null)
{
$this->arr = $arr;
if (!is_null($pidname)) {
$this->pidname = $pidname;
}
if (!is_null($nbsp)) {
$this->nbsp = $nbsp;
}
if(!is_null($pk)){
$this->pk = $pk;
}
if(!is_null($childname)){
$this->pk = $childname;
}
return $this;
}
/**
* 得到子级数组
* @param int $myid
* @return array
*/
public function getChild(int $myid)
{
$newarr = [];
foreach ($this->arr as $value) {
if (!isset($value[$this->pk])) {
continue;
}
if ($value[$this->pidname] == $myid) {
$newarr[$value[$this->pk]] = $value;
}
}
return $newarr;
}
/**
* 读取指定节点的所有孩子节点
* @param int $myid
* @param bool $withself
* @return array
*/
public function getChildren(int $myid, bool $withself = false)
{
$newarr = [];
foreach ($this->arr as $value) {
if (!isset($value[$this->pk])) {
continue;
}
if ($value[$this->pidname] == $myid) {
$newarr[] = $value;
$newarr = array_merge($newarr, $this->getChildren($value[$this->pk]));
} elseif ($withself && $value[$this->pk] == $myid) {
$newarr[] = $value;
}
}
return $newarr;
}
/**
* 读取指定节点的所有孩子节点ID
* @param int $myid
* @param bool $withself
* @return array
*/
public function getChildrenIds(int $myid, bool $withself = false)
{
$childrenlist = $this->getChildren($myid, $withself);
$childrenids = [];
foreach ($childrenlist as $k => $v) {
$childrenids[] = $v[$this->pk];
}
return $childrenids;
}
/**
* 得到当前位置父辈数组
* @param int $myid
* @return array
*/
public function getParent(int $myid)
{
$pid = 0;
$newarr = [];
foreach ($this->arr as $value) {
if (!isset($value[$this->pk])) {
continue;
}
if ($value[$this->pk] == $myid) {
$pid = $value[$this->pidname];
break;
}
}
if ($pid) {
foreach ($this->arr as $value) {
if ($value[$this->pk] == $pid) {
$newarr[] = $value;
break;
}
}
}
return $newarr;
}
/**
* 得到当前位置所有父辈数组
* @param int $myid
* @param bool $withself
* @return array
*/
public function getParents(int $myid, bool $withself = false)
{
$pid = 0;
$newarr = [];
foreach ($this->arr as $value) {
if (!isset($value[$this->pk])) {
continue;
}
if ($value[$this->pk] == $myid) {
if ($withself) {
$newarr[] = $value;
}
$pid = $value[$this->pidname];
break;
}
}
if ($pid) {
$arr = $this->getParents($pid, true);
$newarr = array_merge($arr, $newarr);
}
return $newarr;
}
/**
* 读取指定节点所有父类节点ID
* @param int $myid
* @param bool $withself
* @return array
*/
public function getParentsIds(int $myid, bool $withself = false)
{
$parentlist = $this->getParents($myid, $withself);
$parentsids = [];
foreach ($parentlist as $k => $v) {
$parentsids[] = $v[$this->pk];
}
return $parentsids;
}
/**
* 树型结构Option
* @param int $myid 表示获得这个ID下的所有子级
* @param string $itemtpl 条目模板 如："<option value=@id @selected @disabled>@spacer@name</option>"
* @param mixed $selectedids 被选中的ID，比如在做树型下拉框的时候需要用到
* @param mixed $disabledids 被禁用的ID，比如在做树型下拉框的时候需要用到
* @param string $itemprefix 每一项前缀
* @param string $toptpl 顶级栏目的模板
* @return string
*/
public function getHtmlOption(int $myid, string $itemtpl = "<option value=@id @selected @disabled>@spacer@name</option>",string $selectedids = '',string $disabledids = '',string $itemprefix = '',string $toptpl = '')
{
$ret = '';
$number = 1;
$childs = $this->getChild($myid);
if ($childs) {
$total = count($childs);
foreach ($childs as $value) {
$id = $value[$this->pk];
$j = $k = '';
if ($number == $total) {
$j .= $this->icon[2];
$k = $itemprefix ? $this->nbsp : '';
} else {
$j .= $this->icon[1];
$k = $itemprefix ? $this->icon[0] : '';
}
$spacer = $itemprefix ? $itemprefix . $j : '';
$selected = $selectedids && in_array($id, (is_array($selectedids) ? $selectedids : explode(',', $selectedids))) ? 'selected' : '';
$disabled = $disabledids && in_array($id, (is_array($disabledids) ? $disabledids : explode(',', $disabledids))) ? 'disabled' : '';
$value = array_merge($value, array('selected' => $selected, 'disabled' => $disabled, 'spacer' => $spacer));
$value = array_combine(array_map(function ($k) {
return '@' . $k;
}, array_keys($value)), $value);
$nstr = strtr((($value["@{$this->pidname}"] == 0 || $this->getChild($id)) && $toptpl ? $toptpl : $itemtpl), $value);
$ret .= $nstr;
$ret .= $this->getHtmlOption($id, $itemtpl, $selectedids, $disabledids, $itemprefix . $k . $this->nbsp, $toptpl);
$number++;
}
}
return $ret;
}
/**
* 树型结构UL
* @param int $myid 表示获得这个ID下的所有子级
* @param string $itemtpl 条目模板 如："<li value=@id @selected @disabled>@name @childlist</li>"
* @param string $selectedids 选中的ID
* @param string $disabledids 禁用的ID
* @param string $wraptag 子列表包裹标签
* @param string $wrapattr 子列表包裹属性
* @return string
*/
public function getHtmlUl(int $myid, string $itemtpl = "<li value=@id @selected @disabled>@name @childlist</li>", string $selectedids = '', string $disabledids = '', string $wraptag = 'ul', string $wrapattr = '')
{
$str = '';
$childs = $this->getChild($myid);
if ($childs) {
foreach ($childs as $value) {
$id = $value[$this->pk];
unset($value['child']);
$selected = $selectedids && in_array($id, (is_array($selectedids) ? $selectedids : explode(',', $selectedids))) ? 'selected' : '';
$disabled = $disabledids && in_array($id, (is_array($disabledids) ? $disabledids : explode(',', $disabledids))) ? 'disabled' : '';
$value = array_merge($value, array('selected' => $selected, 'disabled' => $disabled));
$value = array_combine(array_map(function ($k) {
return '@' . $k;
}, array_keys($value)), $value);
$nstr = strtr($itemtpl, $value);
$childdata = $this->getHtmlUl($id, $itemtpl, $selectedids, $disabledids, $wraptag, $wrapattr);
$childlist = $childdata ? "<{$wraptag} {$wrapattr}>" . $childdata . "</{$wraptag}>" : "";
$str .= strtr($nstr, array('@childlist' => $childlist));
}
}
return $str;
}
/**
* 获取树状数组
* @param int $myid
* @param string $itemprefix
* @return array
*/
public function getTreeOrg(int $myid, string $itemprefix = '')
{
$childs = $this->getChild($myid);
$n = 0;
$data = [];
$number = 1;
if ($childs) {
$total = count($childs);
foreach ($childs as $id => $value) {
$j = $k = '';
if ($number == $total) {
$j .= $this->icon[2];
$k = $itemprefix ? $this->nbsp : '';
} else {
$j .= $this->icon[1];
$k = $itemprefix ? $this->icon[0] : '';
}
$spacer = $itemprefix ? $itemprefix . $j : '';
$value['spacer'] = $spacer;
$data[$n] = $value;
$data[$n][$this->childname] = $this->getTreeOrg($id, $itemprefix . $k . $this->nbsp);
$n++;
$number++;
}
}
return $data;
}
/**
* 将getTreeOrg的结果返回为二维数组
* @param array $data
* @param string $field
* @return array
*/
public function getTreeList(array $data = [], string $field = 'name')
{
$arr = [];
foreach ($data as $k => $v) {
$childlist = isset($v[$this->childname]) ? $v[$this->childname] : [];
unset($v[$this->childname]);
$v[$field] = html_entity_decode($v['spacer'] . ' ' . $v[$field]);
$v['haschild'] = $childlist ? 1 : 0;
if ($v[$this->pk]) {
$arr[] = $v;
}
if ($childlist) {
$arr = array_merge($arr, $this->getTreeList($childlist, $field));
}
}
return $arr;
}
}
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