<?php
$data = [
[ 'id' => 1, 'name' => '江苏省', 'pid' => 0],
[ 'id' => 2, 'name' => '徐州市', 'pid' => 1],
[ 'id' => 3, 'name' => '睢宁县', 'pid' => 2],
[ 'id' => 4, 'name' => '双沟镇', 'pid' => 3],
[ 'id' => 5, 'name' => '王集镇', 'pid' => 3],
[ 'id' => 6, 'name' => '铜山区', 'pid' => 2],
[ 'id' => 7, 'name' => '张集镇', 'pid' => 6],
[ 'id' => 8, 'name' => '大黄山镇', 'pid' => 6],
[ 'id' => 9, 'name' => '南京市', 'pid' => 1],
[ 'id' => 10, 'name' => '江宁区', 'pid' => 9],
[ 'id' => 11, 'name' => '鼓楼区', 'pid' => 9],
[ 'id' => 12, 'name' => '浙江省', 'pid' => 0],
[ 'id' => 13, 'name' => '杭州市', 'pid' => 12],
[ 'id' => 14, 'name' => '西湖区', 'pid' => 13]
];
$res = [];
$tree = [];
//整理数组
foreach ($data as $key => $value) {
$res[$value['id']] = $value;
$res[$value['id']]['children'] = [];
}
unset ($data);
//查询子孙
foreach ($res as $key => $value) {
if($value['pid'] != 0){
$res[$value['pid']]['children'][] = &$res[$key];
}
}
//去除杂质
foreach ($res as $key => $value) {
if ($value['pid'] == 0){
$tree[] = $value;
}
}
unset($res);
$tree = json_encode($tree);？>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<title>树模块 - layui</title>
<link rel="stylesheet" href="layui-master/build/css/layui.css">
<style>
body{padding: 50px 100px;}
</style>
</head>
<body>
<?php require 'mytree.php'; ?>
<ul id="demo"></ul>
<script src="layui-master/build/lay/dest/layui.all.js"></script>
<script>
layui.use('tree', function(){
var tree = layui.tree({
elem: '#demo' //指定元素
//,check: 'checkbox' //勾选风格
,skin: 'as' //设定皮肤
,target: '_blank' //是否新选项卡打开（比如节点返回href才有效）
,drag: true
,click: function(item){ //点击节点回调
console.log(item)
}
,nodes: <?php echo $tree; ?>
});
});
</script>
</body>
</html>