Question

这是代码，它使用foreach访问部门和工作人员。

编辑：将更正几个粘贴错误

<?php

$json = '{
"boss": "Jeff",
"department": [{
    "office": "1111",
    "workers": "[{\"id_work\":\"123\",\"name\":\"mike\",\"mobile\":\"12345\"}]"
}]}';
$json_data = json_decode($json);
echo "Boss:".$json_data->boss;

echo "<br>";

foreach($json_data->deparment as $dep)
{

 echo "Office number:".$dep->office."<br>";

  foreach($dep->workers as $worker){
  echo "Worker ID: ".$worker->id_work."<br>";
  echo "Worker name : ".$worker->name."<br>";
  echo "Worker mobil: ".$worker->mobil."<br>";


}


}
?>

当我尝试执行foreach（）时，我无法访问内部数组：

为foreach（）提供的参数无效

如何访问嵌套数组的信息

Answer 1

$json内的json数据是错误的。解码没有出错，但你得到的数组不是你想要的，这就是为什么你在json_decode之后出错的原因。

您得到的错误是因为worker值是字符串格式。你应该更新：

来自："workers": "[{\"id_work\":\"123\",\"name\":\"mike\",\"mobile\":\"12345\"}]"

收件人："workers": [{ "id_work": "123", "name": "mike", "mobile":"12345"}]

最终结果：

$json = '{
"boss": "Jeff",
"department": [{
    "office": "1111",
    "workers": [{ "id_work": "123", "name": "mike", "mobile":"12345"}]
}]}';

$json_data = json_decode($json);
echo "Boss:".$json_data->boss;
echo "<br>";

foreach($json_data->department as $dep)
{
    echo "Office number:".$dep->office."<br>";

    foreach($dep->workers as $worker){
        echo "Worker ID: ".$worker->id_work."<br>";
        echo "Worker name : ".$worker->name."<br>";
        echo "Worker mobil: ".$worker->mobile."<br>";
    }
}

在PHP中访问JSON上的嵌套数组？

1 个答案: