如何从 PHP 中的多维 JSON 字符串数组中获取元素的值

希望这个简单的foreach方法对你有帮助。

解决方案 1： 在此处尝试此代码片段

$result=array();
foreach($array as $value)
{
    $array=  json_decode($value["product_details"],true);
    $result[]=$array[key($array)]["id"];
}
print_r($result);

在这里，我们使用array_column提取product_details然后我们使用 toarray_map迭代$personalDetails包含所有JSON' 然后我们使用 tokey函数，它将返回数组的第一个键，并通过我们正在访问的键，它的id.

解决方案 2： 在此处尝试此代码片段

<?php

ini_set('display_errors', 1);
$array = Array
    (
    0 => Array
        (
        "product_details" => '{"5f93f983524def3dca464469d2cf9f3e":{"id":"110","qty":1,"option":"{\"color\":{\"title\":\"Color\",\"value\":null}}","price":1400,"name":"Foot Massage","tax":null,"image":"http:\/\/acme.dev\/uploads\/product_image\/product_110_1_thumb.jpg","coupon":"9","book_date_":"2017-04-19","book_date_name_":"wed","start_timeslot_":"09:00:00","end_timeslot_":"10:00:00","has_already_rescheduled":0,"discount_":"0","rowid":"5f93f983524def3dca464469d2cf9f3e","subtotal":1400}}'
    ),
    1 => Array
        (
        "product_details" => '{"2723d092b63885e0d7c260cc007e8b9d":{"id":"109","qty":1,"option":"{\"color\":{\"title\":\"Color\",\"value\":null}}","price":700,"name":"Body Massage","tax":0,"image":"http:\/\/acme.dev\/uploads\/product_image\/product_109_1_thumb.jpg","coupon":"","book_date_":"2017-04-18","book_date_name_":"tue","start_timeslot_":"09:00:00","end_timeslot_":"10:00:00","has_already_rescheduled":0,"discount_":"0","rowid":"2723d092b63885e0d7c260cc007e8b9d","subtotal":700}}'
    ),
    2 => Array
        (
        "product_details" => '{"a3c65c2974270fd093ee8a9bf8ae7d0b":{"id":"108","qty":1,"option":"{\"color\":{\"title\":\"Color\",\"value\":null}}","price":3000,"name":"Alo","tax":0,"image":"http:\/\/acme.dev\/uploads\/product_image\/default.jpg","coupon":"","book_date_":"2017-04-21","book_date_name_":"fri","start_timeslot_":"10:00:00","end_timeslot_":"12:00:00","has_already_rescheduled":0,"discount_":"0","rowid":"a3c65c2974270fd093ee8a9bf8ae7d0b","subtotal":3000}}'
    ),
    3 => Array
        (
        "product_details" => '{"a3c65c2974270fd093ee8a9bf8ae7d0b":{"id":"108","qty":1,"option":"{\"color\":{\"title\":\"Color\",\"value\":null}}","price":3000,"name":"Alo","tax":0,"image":"http:\/\/acme.dev\/uploads\/product_image\/default.jpg","coupon":"","book_date_":"2017-04-12","book_date_name_":"wed","start_timeslot_":"08:00:00","end_timeslot_":"10:00:00","has_already_rescheduled":0,"discount_":"0","rowid":"a3c65c2974270fd093ee8a9bf8ae7d0b","subtotal":3000}}'
    )
);
$personalDetails=  array_column($array, "product_details");

$result=array_map(function($value){
    $array=json_decode($value,true);
    return $array[key($array)]["id"];
}, $personalDetails);
print_r($result);

输出：

Array
(
    [0] => 110
    [1] => 109
    [2] => 108
    [3] => 108
)