使用 PHP 解析数组的 JSON 数组 - Parsing a JSON array of arrays using PHP

Parsing a JSON array of arrays using PHP

本文关键字：数组 JSON PHP 使用 | 更新日期: 2023-09-27

我知道这很简单，但我被困住了，我真的很想得到一些帮助

这是我正在生成的一个 JSON 字符串。

[{"field1":3,"field2":"5","field3":"value3","field4":"value4"},{"field1":3,"field2":"8","field3":"value3","field4":"value4"},{"field1":3,"field2":"6","field3":"value3"}]

如何提取与字段 1 关联的值？

如何访问每个不同数组的元素？

试试这段代码

$jsonString = '[{"field1":3,"field2":"5","field3":"value3","field4":"value4"},{"field1":3,"field2":"8","field3":"value3","field4":"value4"},{"field1":3,"field2":"6","field3":"value3"}]';
$json = json_decode($jsonString, true);
print_r($json);

试试这个（在Javascript中）

var jsonData=[{"field1":3,"field2":"5","field3":"value3","field4":"value4"},{"field1":3,"field2":"8","field3":"value3","field4":"value4"},{"field1":3,"field2":"6","field3":"value3"}];

如果你得到文本形式的响应，那么使用 jsonData=JSON.parse（yourResponseText）;

for(var i=0;i<jsonData.length;i++){
alert('your required val:'+jsonData[i].field1);
}

在 php 中

$data = json_decode($json);//$json is your json data
foreach ($data as $item) {
  echo $item->field1
}

https://stackoverflow.com/a/3627901/485790

console.log(jQuery.parseJSON(' [{"field1":3,"field2":"5","field3":"value3","field4":"value4"},{"field1":3,"field2":"8","field3":"value3","field4":"value4"},{"field1":3,"field2":"6","field3":"value3"}]').field1);

以 php 的方式

$jsonString = '[{"field1":3,"field2":"5","field3":"value3","field4":"value4"},{"field1":3,"field2":"8","field3":"value3","field4":"value4"},{"field1":3,"field2":"6","field3":"value3"}]';
$json = json_decode($jsonString, true);
foreach($json as $item){
   echo $item['field1'];
}

在 php 中，你可以：

$json = json_decode($_GET['variable'];

http://php.net/manual/en/function.json-decode.php

试试这个，

var json = '[{"field1":3,"field2":"5","field3":"value3","field4":"value4"},{"field1":3,"field2":"8","field3":"value3","field4":"value4"},{"field1":3,"field2":"6","field3":"value3"}]';
    $.each(jQuery.parseJSON(json), function () {
        alert(this['field1']);
        alert(this['field2']);
        alert(this['field3']);
        alert(this['field4']);
});

这是一个简单的 JSON 对象数组。所以有了jQuery。

var jsonArray = JSON.parse("your string");
   for(var int i=0 ; i < jsonArray.length() ; i++){
     var jsonObject = jsonArray[i];
     Console.log(jsonObject.field1)
   }