php中作为树格式的Json数组
我有这个php代码来形成层次结构php中作为树格式的Json数组,php,arrays,json,Php,Arrays,Json,我有这个php代码来形成层次结构 $arr = array( 'name' => "Level 2: A", 'parent' => "Top Level", 'children' => "" ); $arr2 = array( 'name' => "Top Level", 'parent' => "null", 'children' => "$arr" ); echo json_encode($ar
$arr = array(
'name' => "Level 2: A",
'parent' => "Top Level",
'children' => ""
);
$arr2 = array(
'name' => "Top Level",
'parent' => "null",
'children' => "$arr"
);
echo json_encode($arr2);
但是我无法访问JSON输出中的数组
我的JSON输出:{“name”:“Top-Level”,“parent”:“null”,“children”:“Array”}
我的目标是创建一个这样的数组,但是使用JSON,但是它返回的是数组
,而不是数组中的数据
var treeData = [
{
"name": "Top Level",
"parent": "null",
"children": [
{
"name": "Level 2: A",
"parent": "Top Level",
"children": [
{
"name": "Son of A",
"parent": "Level 2: A"
},
{
"name": "Daughter of A",
"parent": "Level 2: A"
}
]
},
{
"name": "Level 2: B",
"parent": "Top Level"
}
]
}
]; 你必须记住关于$arr
$arr2 = array(
'name' => "Top Level",
'parent' => "null",
'children' => $arr // <- remove quotes here
);
这将使您的代码保持一致,因为您总是在children
属性下有一个数组。为什么children=>“$arr”
??应该是'children'=>数组($arr)
或'children'=>$arr
。
$arr = array(
'name' => "Level 2: A",
'parent' => "Top Level",
'children' => array() // <- here
);