PHP中函数中的非法字符串偏移量

Question

I have this PHP function:

function editDatas($datas, $got, $to_find, $to_replace) {
    foreach($datas['datas'] as $key => $rows) {
        foreach($rows as $number => $row) {
            if($row['id'] == $got) {
                $datas['datas'][$key][$number][$to_find] = $to_replace;
                return $datas;
            }
        }
    }
}

And this call:

$datas = json_decode(file_get_contents('datas.json'), true);  
$datas = editDatas($datas, 'hotel_name', "value", 'My new hotel name');

My json is actually like this:

{
    "datas": [
        {
            "category": "General",
            "id": "hotel_name",
            "type": "input",
            "maxlength": "15",
            "size": "10",
            "label": "Hotel name",
            "help": "Hotel name",
            "value": "Rubi's hotel"
        },
        ...

I'm trying to replace some value in my json.

The problem I'm facing is this error:

Illegal string offset 'id' in line 33

Which is the following in my function:

if($row['id'] == $got) {

I do not understand why because the id is know.

Could you please help me to solve my problem.

Thanks.

Answer 1

I think your function has one too many loops in it. Try this:

function editDatas($datas, $got, $to_find, $to_replace) {
        foreach($datas['datas'] as $key => $row) {
            if($row['id'] == $got) {
                $datas['datas'][$key][$to_find] = $to_replace;
                return $datas;
            }
        }
    }