json转换为php数组,然后正确显示为列表
我得到了我的json,我把它转换成了一个php数组,下面是打印:json转换为php数组,然后正确显示为列表,php,arrays,json,Php,Arrays,Json,我得到了我的json,我把它转换成了一个php数组,下面是打印: Array ( [0] => Array ( [id] => 187 ) [1] => Array ( [id] => 209 [children] => Array ( [0] => A
Array
(
[0] => Array
(
[id] => 187
)
[1] => Array
(
[id] => 209
[children] => Array
(
[0] => Array
(
[id] => 210
)
[1] => Array
(
[id] => 211
)
)
)
[2] => Array
(
[id] => 188
[children] => Array
(
[0] => Array
(
[id] => 196
)
[1] => Array
(
[id] => 197
)
[2] => Array
(
[id] => 198
)
)
)
[3] => Array
(
[id] => 189
[children] => Array
(
[0] => Array
(
[id] => 193
)
)
)
[4] => Array
(
[id] => 202
[children] => Array
(
[0] => Array
(
[id] => 190
)
[1] => Array
(
[id] => 191
)
[2] => Array
(
[id] => 206
)
[3] => Array
(
[id] => 192
)
)
)
[5] => Array
(
[id] => 203
[children] => Array
(
[0] => Array
(
[id] => 204
)
[1] => Array
(
[id] => 205
)
[2] => Array
(
[id] => 207
)
[3] => Array
(
[id] => 208
)
)
)
[6] => Array
(
[id] => 194
)
)
现在,我想将该数组转换为一个列表,最终可以更新数据库。但我不知道如何处理子数组:
到目前为止,我已经:
$arrayList = json_decode(stripslashes($_POST['nestable-output']), true);
foreach ($arrayList as $array1){
foreach ($array1 as $pageID => $pageOrder){
echo $pageID . "-" . $pageOrder . "<br/>";
//foreach ($pageOrder as $pageID2 => $pageOrder2){
// echo $pageID2 . "-" . $pageOrder2 . "<br/>";
//}
}
}
您正在尝试遍历每一个,无论id是
id
还是子项
。由于键为id
时的值是数字,而不是数组,因此在尝试作为foreach运行时将失败。相反,只有当您知道它是一个数组时才循环(strcmp开始发挥作用):
$arrayList=json\u decode(stripslashes($\u POST['nestable-output']),true);
foreach($arrayList为$array1){
foreach($pageID=>$pageOrder的数组1){
echo$pageID。“-”$pageOrder。“
”;
if(strcmp(“子项,$pageID)==0)){
foreach($pageOrder作为$pageID2=>$pageOrder2){
echo$pageID2。“-”$pageOrder2。“
”;
}
}
}
}
由于试图将ID值(一个整数)传递给第二个foreach
构造,因此出现“无效参数”错误
尝试将代码修改为:
$arrayList = json_decode(stripslashes($_POST['nestable-output']), true);
foreach ($arrayList as $array1){
foreach ($array1 as $pageID => $pageOrder){
echo $pageID . "-" . $pageOrder . "<br/>";
if($pageID == 'children') {
foreach ($pageOrder as $pageID2 => $pageOrder2){
echo $pageID2 . "-" . $pageOrder2 . "<br/>";
}
}
}
}
$arrayList=json\u decode(stripslashes($\u POST['nestable-output']),true);
foreach($arrayList为$array1){
foreach($pageID=>$pageOrder的数组1){
echo$pageID。“-”$pageOrder。“
”;
如果($pageID=='children'){
foreach($pageOrder作为$pageID2=>$pageOrder2){
echo$pageID2。“-”$pageOrder2。“
”;
}
}
}
}
您无法从foreach($array1…
获取$pageID=>$pageOrder
。您将获得一个$key=>$value
。$key可以等于字符串“id”,在这种情况下,$value将是数组中的id号。您的$key也可以等于字符串“children”,在这种情况下,$value将是您的子ID数组。据我所知,您希望从多维数组中获取字符串。试着这样做:
$arrayList = json_decode(stripslashes($_POST['nestable-output']), true);
$list = trim(array_walk($arrayList, 'get_ids'), ',');
function get_ids($array_list) {
$list = '';
foreach($array_list as $key => $value) {
if('children' == $key) $list .= get_ids($value)
else {
foreach($value as $index => $id) $list .= $id . ', ';
}
}
return $list;
}
注意,即使你有超过2个级别的数组,它也应该工作。
谢谢,我不得不在中间添加另一个前段来显示数组的最终级别,但是它现在正在工作。有时你看不见树木,看不见森林@jimbeeer这是一个简单的错误,我打赌你现在不会再犯了$arrayList = json_decode(stripslashes($_POST['nestable-output']), true);
foreach ($arrayList as $array1){
foreach ($array1 as $pageID => $pageOrder){
echo $pageID . "-" . $pageOrder . "<br/>";
if($pageID == 'children') {
foreach ($pageOrder as $pageID2 => $pageOrder2){
echo $pageID2 . "-" . $pageOrder2 . "<br/>";
}
}
}
}
$arrayList = json_decode(stripslashes($_POST['nestable-output']), true);
$list = trim(array_walk($arrayList, 'get_ids'), ',');
function get_ids($array_list) {
$list = '';
foreach($array_list as $key => $value) {
if('children' == $key) $list .= get_ids($value)
else {
foreach($value as $index => $id) $list .= $id . ', ';
}
}
return $list;
}