PHP用foreach创建JSON

Question

我有下面的PHP代码，可以从数组中用foreach创建JSON：

$array = array('one', 'two', 'three', 'four');

foreach ($array as $key => $value) {
    $temp = array(
                'text' => 'Hello', 
                'text1' => 5,
                'collect' => array(
                                $value => array(
                                            'xx' => 'yy',
                                            'key' => $key
                                        )
                            )
            );


    echo json_encode($temp);
}

产出如下：

{
    "text":"Hello",
    "text1":5,
    "collect":{"one":{"xx":"yy","key":0}}
}

{
    "text":"Hello",
    "text1":5,
    "collect":{"two":{"xx":"yy","key":1}}
}

{
    "text":"Hello",
    "text1":5,
    "collect":{"three":{"xx":"yy","key":2}}
}

{
    "text":"Hello",
    "text1":5,
    "collect":{"four":{"xx":"yy","key":3}}
}

但我想要这个：

{
    "text":"Hello",
    "text1":5,
    "collect": {
        "one":{"xx":"yy","key":0},
        "two":{"xx":"yy","key":1},
        "three":{"xx":"yy","key":2},
        "four":{"xx":"yy","key":3}
    }
}

我得到了单个的4个JSON对象，但是我只需要一个带有collect对象的对象。

我不明白..。

Answer 1

试试这段简单的代码，其中我们在foreach之前有一个声明。

Try this code snippet here

<?php

ini_set('display_errors', 1);
$array = array('one', 'two', 'three', 'four');

$temp = array(
    'text' => 'Hello',
    'text1' => 5,
    'collect' => array()
);
$collect = array();
foreach ($array as $key => $value)
{
    $collect[$value] = array(
        'xx' => 'yy',
        'key' => $key
    );
}
$temp["collect"]=$collect;
echo json_encode($temp);

输出：

{
    "text": "Hello",
    "text1": 5,
    "collect": {
        "one": {
            "xx": "yy",
            "key": 0
        },
        "two": {
            "xx": "yy",
            "key": 1
        },
        "three": {
            "xx": "yy",
            "key": 2
        },
        "four": {
            "xx": "yy",
            "key": 3
        }
    }
}

Answer 2

您需要循环遍历这些值数组并将其追加到临时数组的“collect”键中。

$array = array('one', 'two', 'three', 'four');
$temp = array(
    'text' => 'Hello', 
    'text1' => 5,
    'collect' => array()
);

foreach ($array as $key => $value) {
    $temp['collect'][$value] = array(
        'xx' => 'yy',
        'key' => $key
    );
}

echo json_encode($temp);

下面是演示：https://eval.in/788929