在 echo 中显示 Json 数组，它是刀片 laravel 中的嵌套数组数据答案

【问题标题】：Displaying Json array in echo which is nested array data in blade laravel在 echo 中显示 Json 数组，它是刀片 laravel 中的嵌套数组数据
【发布时间】：2020-04-10 13:38:24
【问题描述】：

这是我的代码，我想回显这个 $json 中的所有数据。

$json = '{"year":"2018","month":"4","name":"Apr 2018 - Sept 2018","description":null,"code":"2018\/04","session_from_at":{"date":"2018-04-16 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"session_to_at":{"date":"2018-09-21 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"registered_from_at":{"date":"2018-04-16 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"registered_to_at":{"date":"2018-04-20 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"added_dropped_from_at":null,"added_dropped_to_at":null,"withdrew_from_at":null,"withdrew_to_at":null,"attended_from_at":{"date":"2018-04-20 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"attended_to_at":{"date":"2018-04-29 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"cw_marked_from_at":{"date":"2018-04-20 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"cw_marked_to_at":{"date":"2018-04-29 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"fe_marked_from_at":{"date":"2018-04-29 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"fe_marked_to_at":{"date":"2018-09-21 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"created_by":1,"updated_by":1,"id":2}';

$arr = json_decode($json,true);

foreach($arr as $key=>$value){
    echo $key . "<br>";
    echo $value . "<br>"; // PHP Notice:  Array to string conversion in /workspace/Main.php on line 11
// not displaying the value
}
?>

问题出在 session_from_at 上的数据循环中，其中的数组中有三个数据。

【问题讨论】：

标签： php json laravel foreach laravel-blade

【解决方案1】：

你得到一个错误，因为其他 $value 是一个你不能回显它的数组，所以尝试检查它的数组或对象是否像这样：

foreach($arr as $key=>$value){
    echo $key . "<br>";
    if(is_object($value) || is_array($value)){
        foreach($value as $key2=>$value2){
             echo $key2 . "<br>";
             echo $value2 . "<br>";
        }
    }else{
        echo $value . "<br>";
    }

}

【讨论】：

如果此解决方案有效，则接受答案.... @MuhammadRahim

【解决方案2】：

我认为您没有使用刀片。你的文件名是Main.php 如果您使用刀片，我建议您使用@foreach 而不是foreach。

在json_decode 之后，数组里面还有一个数组。

试试这个代码：

$json = '{"year":"2018","month":"4","name":"Apr 2018 - Sept 2018","description":null,"code":"2018\/04","session_from_at":{"date":"2018-04-16 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"session_to_at":{"date":"2018-09-21 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"registered_from_at":{"date":"2018-04-16 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"registered_to_at":{"date":"2018-04-20 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"added_dropped_from_at":null,"added_dropped_to_at":null,"withdrew_from_at":null,"withdrew_to_at":null,"attended_from_at":{"date":"2018-04-20 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"attended_to_at":{"date":"2018-04-29 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"cw_marked_from_at":{"date":"2018-04-20 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"cw_marked_to_at":{"date":"2018-04-29 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"fe_marked_from_at":{"date":"2018-04-29 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"fe_marked_to_at":{"date":"2018-09-21 00:00:00.000000","timezone_type":3,"timezone":"Asia\/Singapore"},"created_by":1,"updated_by":1,"id":2}';

$arr = json_decode($json, true);

function echoArray($arr) {
    foreach($arr as $key=>$value){
        echo $key . "<br>";
        if (is_array($value)) {
            echoArray($value);
        } else {
            echo $value . "<br>";
        }
    }
}

echoArr($arr);

【讨论】：

【解决方案3】：

试试看：

 $arr['year'];
 $arr['month'];

你不需要使用 foreach。

【讨论】：