Question

您好我想在从api发布的表中插入值 json数据是

{"questions":{"34":"Yes", "46":"good", "48":"NA", "29":"Yes", "45":"ravi", "49":"Negative", "43":"1 BHK", "35":"Neighbour", "38":"14", "39":"9", "27":"1", 
"41":"Married", "52":"vijay@123.com", "47":"good", "31":"Bunglow", "33":"Middle Class", "37":"Owned By Parents", "30":"good", "50":"easy", 
"51":"comments", "32":"No", "44":"[MusicSystem,PC,Refrigerator,Airconditioner]"}}

当我转换成数组时，它是

Array
(
    [questions] => Array
        (
            [34] => Yes
            [46] => good
            [48] => NA
            [29] => Yes
            [45] => ravi
            [49] => Negative
            [43] => 1 BHK
            [35] => Neighbour
            [38] => 14
            [39] => 9
            [27] => 1
            [41] => Married
            [52] => ravi@gmail.com
            [47] => good
            [31] => Bunglow
            [33] => Middle Class
            [37] => Owned By Parents
            [30] => good
            [50] => easy
            [51] => comments
            [32] => No
            [44] => [MusicSystem,PC,Refrigerator,Airconditioner]
        )

)

如何获得像

这样的值

使用foreach $问题= 34; $ answer = yes;

Answer 1

尝试这样。使用json_decode()将json转换为数组。然后使用键和值创建一个新数组。然后只打印第一个键和值。

<?php
$json = '{"questions":{"34":"Yes", "46":"good", "48":"NA", "29":"Yes", "45":"ravi", "49":"Negative", "43":"1 BHK", "35":"Neighbour", "38":"14", "39":"9", "27":"1", 
"41":"Married", "52":"vijay@123.com", "47":"good", "31":"Bunglow", "33":"Middle Class", "37":"Owned By Parents", "30":"good", "50":"easy", 
"51":"comments", "32":"No", "44":"[MusicSystem,PC,Refrigerator,Airconditioner]"}}
';
$array = json_decode($json,TRUE);
//print_r($array);
foreach($array['questions'] as $key=>$value)
{
    $arr[] = array('key'=>$key,'value'=>$value);
}
//print_r($arr);
echo "Question:".$arr[0]['key'].PHP_EOL;
echo "Answer:".$arr[0]['value'];

输出：

Question:34
Answer:Yes

Answer 2

要在拥有密钥时访问单个值，您可以$array["questions"][34]获得答案yes。
如果你想循环遍历所有这些循环：

foreach($array["questions"] as $no => $ans){
    echo "Question: $no";
    echo "Answer: $ans";
}

关于json数据的foreach

2 个答案: